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[PATCH v14 14/14] block/backup: use backup-top instead of write notifier


From: Vladimir Sementsov-Ogievskiy
Subject: [PATCH v14 14/14] block/backup: use backup-top instead of write notifiers
Date: Thu, 26 Sep 2019 13:26:14 +0300

Drop write notifiers and use filter node instead.

= Changes =

1. Add filter-node-name argument for backup qmp api. We have to do it
in this commit, as 257 needs to be fixed.

2. There are no more write notifiers here, so is_write_notifier
parameter is dropped from block-copy paths.

3. To sync with in-flight requests at job finish we now have drained
removing of the filter, we don't need rw-lock.

= Notes =

Note the consequence of three objects appearing: backup-top, backup job
and block-copy-state:

1. We want to insert backup-top before job creation, to behave similar
with mirror and commit, where job is started upon filter.

2. We also have to create block-copy-state after filter injection, as
we don't want its source child be replaced by filter. Instead we want
to keep BCS.source to be real source node, as we want to use
bdrv_co_try_lock in CBW operations and it can't be used on filter, as
on filter we already have in-flight (write) request from upper layer.

So, we firstly create inject backup-top, then create job and BCS. BCS
is the latest just to not create extra variable for it. Finally we set
bcs for backup-top filter.

= Iotest changes =

56: op-blocker doesn't shoot now, as we set it on source, but then
check on filter, when trying to start second backup.
To keep the test we instead can catch another collision: both jobs will
get 'drive0' job-id, as job-id parameter is unspecified. To prevent
interleaving with file-posix locks (as they are dependent on config)
let's use another target for second backup.

Also, it's obvious now that we'd like to drop this op-blocker at all
and add a test-case for two backups from one node (to different
destinations) actually works. But not in these series.

257: The test wants to emulate guest write during backup. They should
go to filter node, not to original source node, of course. Therefore we
need to specify filter node name and use it.

Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
---
 qapi/block-core.json       |   8 +-
 include/block/block-copy.h |  10 +-
 include/block/block_int.h  |   1 +
 block/backup-top.c         |  14 +-
 block/backup.c             |  60 +++-----
 block/block-copy.c         |  26 ++--
 block/replication.c        |   2 +-
 blockdev.c                 |   1 +
 tests/qemu-iotests/056     |   8 +-
 tests/qemu-iotests/257     |   7 +-
 tests/qemu-iotests/257.out | 306 ++++++++++++++++++-------------------
 11 files changed, 218 insertions(+), 225 deletions(-)

diff --git a/qapi/block-core.json b/qapi/block-core.json
index e6edd641f1..b5cd00c361 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1391,6 +1391,11 @@
 #                list without user intervention.
 #                Defaults to true. (Since 2.12)
 #
+# @filter-node-name: the node name that should be assigned to the
+#                    filter driver that the backup job inserts into the graph
+#                    above node specified by @drive. If this option is not 
given,
+#                    a node name is autogenerated. (Since: 4.2)
+#
 # Note: @on-source-error and @on-target-error only affect background
 # I/O.  If an error occurs during a guest write request, the device's
 # rerror/werror actions will be used.
@@ -1404,7 +1409,8 @@
             '*compress': 'bool',
             '*on-source-error': 'BlockdevOnError',
             '*on-target-error': 'BlockdevOnError',
-            '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } }
+            '*auto-finalize': 'bool', '*auto-dismiss': 'bool',
+            '*filter-node-name': 'str' } }
 
 ##
 # @DriveBackup:
diff --git a/include/block/block-copy.h b/include/block/block-copy.h
index 962f91056a..0e257db3ab 100644
--- a/include/block/block-copy.h
+++ b/include/block/block-copy.h
@@ -27,6 +27,14 @@ typedef struct BlockCopyInFlightReq {
 typedef void (*ProgressBytesCallbackFunc)(int64_t bytes, void *opaque);
 typedef void (*ProgressResetCallbackFunc)(void *opaque);
 typedef struct BlockCopyState {
+    /*
+     * block-copy shares WRITE permission on source, but it relies on user to
+     * guarantee that nobody is touching dirty areas.
+     *
+     * For backup job this is guaranteed by backup-top filter, which don't 
share
+     * WRITE permission and calls block_copy on any write, so it will handle
+     * dirty areas by itself.
+     */
     BlockBackend *source;
     BlockBackend *target;
     BdrvDirtyBitmap *copy_bitmap;
@@ -79,6 +87,6 @@ int64_t block_copy_reset_unallocated(BlockCopyState *s,
                                      int64_t offset, int64_t *count);
 
 int coroutine_fn block_copy(BlockCopyState *s, int64_t start, uint64_t bytes,
-                            bool *error_is_read, bool is_write_notifier);
+                            bool *error_is_read);
 
 #endif /* BLOCK_COPY_H */
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 0422acdf1c..576a176c10 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -1196,6 +1196,7 @@ BlockJob *backup_job_create(const char *job_id, 
BlockDriverState *bs,
                             BdrvDirtyBitmap *sync_bitmap,
                             BitmapSyncMode bitmap_mode,
                             bool compress,
+                            const char *filter_node_name,
                             BlockdevOnError on_source_error,
                             BlockdevOnError on_target_error,
                             int creation_flags,
diff --git a/block/backup-top.c b/block/backup-top.c
index 0991b64759..7534d1f3dc 100644
--- a/block/backup-top.c
+++ b/block/backup-top.c
@@ -49,15 +49,11 @@ static coroutine_fn int backup_top_co_preadv(
 static coroutine_fn int backup_top_cbw(BlockDriverState *bs, uint64_t offset,
                                        uint64_t bytes)
 {
-    /*
-     * Here we'd like to use block_copy(), but it needs some additional
-     * synchronization mechanism to prevent intersecting guest writes during
-     * copy operation. The will appear in further commit (it should be done
-     * together with moving backup to using of backup-top and to the same
-     * synchronization mechanism), and for now it is a TODO.
-     */
-
-    abort();
+    BDRVBackupTopState *s = bs->opaque;
+    uint64_t end = QEMU_ALIGN_UP(offset + bytes, s->bcs->cluster_size);
+    uint64_t off = QEMU_ALIGN_DOWN(offset, s->bcs->cluster_size);
+
+    return block_copy(s->bcs, off, end - off, NULL);
 }
 
 static int coroutine_fn backup_top_co_pdiscard(BlockDriverState *bs,
diff --git a/block/backup.c b/block/backup.c
index d918836f1d..7a669605e4 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -2,6 +2,7 @@
  * QEMU backup
  *
  * Copyright (C) 2013 Proxmox Server Solutions
+ * Copyright (c) 2019 Virtuozzo International GmbH.
  *
  * Authors:
  *  Dietmar Maurer (address@hidden)
@@ -27,10 +28,13 @@
 #include "qemu/bitmap.h"
 #include "qemu/error-report.h"
 
+#include "block/backup-top.h"
+
 #define BACKUP_CLUSTER_SIZE_DEFAULT (1 << 16)
 
 typedef struct BackupBlockJob {
     BlockJob common;
+    BlockDriverState *backup_top;
     BlockDriverState *source_bs;
 
     BdrvDirtyBitmap *sync_bitmap;
@@ -39,11 +43,9 @@ typedef struct BackupBlockJob {
     BitmapSyncMode bitmap_mode;
     BlockdevOnError on_source_error;
     BlockdevOnError on_target_error;
-    CoRwlock flush_rwlock;
     uint64_t len;
     uint64_t bytes_read;
     int64_t cluster_size;
-    NotifierWithReturn before_write;
 
     BlockCopyState *bcs;
 } BackupBlockJob;
@@ -68,43 +70,23 @@ static void backup_progress_reset_callback(void *opaque)
 
 static int coroutine_fn backup_do_cow(BackupBlockJob *job,
                                       int64_t offset, uint64_t bytes,
-                                      bool *error_is_read,
-                                      bool is_write_notifier)
+                                      bool *error_is_read)
 {
     int ret = 0;
     int64_t start, end; /* bytes */
 
-    qemu_co_rwlock_rdlock(&job->flush_rwlock);
-
     start = QEMU_ALIGN_DOWN(offset, job->cluster_size);
     end = QEMU_ALIGN_UP(bytes + offset, job->cluster_size);
 
     trace_backup_do_cow_enter(job, start, offset, bytes);
 
-    ret = block_copy(job->bcs, start, end - start, error_is_read,
-                     is_write_notifier);
+    ret = block_copy(job->bcs, start, end - start, error_is_read);
 
     trace_backup_do_cow_return(job, offset, bytes, ret);
 
-    qemu_co_rwlock_unlock(&job->flush_rwlock);
-
     return ret;
 }
 
-static int coroutine_fn backup_before_write_notify(
-        NotifierWithReturn *notifier,
-        void *opaque)
-{
-    BackupBlockJob *job = container_of(notifier, BackupBlockJob, before_write);
-    BdrvTrackedRequest *req = opaque;
-
-    assert(req->bs == job->source_bs);
-    assert(QEMU_IS_ALIGNED(req->offset, BDRV_SECTOR_SIZE));
-    assert(QEMU_IS_ALIGNED(req->bytes, BDRV_SECTOR_SIZE));
-
-    return backup_do_cow(job, req->offset, req->bytes, NULL, true);
-}
-
 static void backup_cleanup_sync_bitmap(BackupBlockJob *job, int ret)
 {
     BdrvDirtyBitmap *bm;
@@ -154,6 +136,7 @@ static void backup_clean(Job *job)
 {
     BackupBlockJob *s = container_of(job, BackupBlockJob, common.job);
 
+    bdrv_backup_top_drop(s->backup_top);
     block_copy_state_free(s->bcs);
 }
 
@@ -220,8 +203,7 @@ static int coroutine_fn backup_loop(BackupBlockJob *job)
             if (yield_and_check(job)) {
                 goto out;
             }
-            ret = backup_do_cow(job, offset,
-                                job->cluster_size, &error_is_read, false);
+            ret = backup_do_cow(job, offset, job->cluster_size, 
&error_is_read);
             if (ret < 0 && backup_error_action(job, error_is_read, -ret) ==
                            BLOCK_ERROR_ACTION_REPORT)
             {
@@ -265,13 +247,8 @@ static int coroutine_fn backup_run(Job *job, Error **errp)
     BackupBlockJob *s = container_of(job, BackupBlockJob, common.job);
     int ret = 0;
 
-    qemu_co_rwlock_init(&s->flush_rwlock);
-
     backup_init_copy_bitmap(s);
 
-    s->before_write.notify = backup_before_write_notify;
-    bdrv_add_before_write_notifier(s->source_bs, &s->before_write);
-
     if (s->sync_mode == MIRROR_SYNC_MODE_TOP) {
         int64_t offset = 0;
         int64_t count;
@@ -309,12 +286,6 @@ static int coroutine_fn backup_run(Job *job, Error **errp)
     }
 
  out:
-    notifier_with_return_remove(&s->before_write);
-
-    /* wait until pending backup_do_cow() calls have completed */
-    qemu_co_rwlock_wrlock(&s->flush_rwlock);
-    qemu_co_rwlock_unlock(&s->flush_rwlock);
-
     return ret;
 }
 
@@ -372,6 +343,7 @@ BlockJob *backup_job_create(const char *job_id, 
BlockDriverState *bs,
                   MirrorSyncMode sync_mode, BdrvDirtyBitmap *sync_bitmap,
                   BitmapSyncMode bitmap_mode,
                   bool compress,
+                  const char *filter_node_name,
                   BlockdevOnError on_source_error,
                   BlockdevOnError on_target_error,
                   int creation_flags,
@@ -382,6 +354,7 @@ BlockJob *backup_job_create(const char *job_id, 
BlockDriverState *bs,
     BackupBlockJob *job = NULL;
     int64_t cluster_size;
     BdrvRequestFlags write_flags;
+    BlockDriverState *backup_top = NULL;
 
     assert(bs);
     assert(target);
@@ -446,13 +419,20 @@ BlockJob *backup_job_create(const char *job_id, 
BlockDriverState *bs,
         goto error;
     }
 
+    backup_top = bdrv_backup_top_append(bs, filter_node_name, errp);
+    if (!backup_top) {
+        goto error;
+    }
+
     /* job->len is fixed, so we can't allow resize */
-    job = block_job_create(job_id, &backup_job_driver, txn, bs, 0, 
BLK_PERM_ALL,
+    job = block_job_create(job_id, &backup_job_driver, txn, backup_top,
+                           0, BLK_PERM_ALL,
                            speed, creation_flags, cb, opaque, errp);
     if (!job) {
         goto error;
     }
 
+    job->backup_top = backup_top;
     job->source_bs = bs;
     job->on_source_error = on_source_error;
     job->on_target_error = on_target_error;
@@ -486,6 +466,8 @@ BlockJob *backup_job_create(const char *job_id, 
BlockDriverState *bs,
 
     job->cluster_size = cluster_size;
 
+    bdrv_backup_top_set_bcs(backup_top, job->bcs);
+
     /* Required permissions are already taken by block-copy-state target */
     block_job_add_bdrv(&job->common, "target", target, 0, BLK_PERM_ALL,
                        &error_abort);
@@ -500,6 +482,8 @@ BlockJob *backup_job_create(const char *job_id, 
BlockDriverState *bs,
     if (job) {
         backup_clean(&job->common.job);
         job_early_fail(&job->common.job);
+    } else if (backup_top) {
+        bdrv_backup_top_drop(backup_top);
     }
 
     return NULL;
diff --git a/block/block-copy.c b/block/block-copy.c
index 61e5ea5f46..7ef6e59803 100644
--- a/block/block-copy.c
+++ b/block/block-copy.c
@@ -151,22 +151,19 @@ fail:
 static int coroutine_fn block_copy_with_bounce_buffer(BlockCopyState *s,
                                                       int64_t start,
                                                       int64_t end,
-                                                      bool is_write_notifier,
                                                       bool *error_is_read,
                                                       void **bounce_buffer)
 {
     int ret;
-    int nbytes;
-    int read_flags = is_write_notifier ? BDRV_REQ_NO_SERIALISING : 0;
+    int nbytes = MIN(s->cluster_size, s->len - start);
 
     assert(QEMU_IS_ALIGNED(start, s->cluster_size));
     bdrv_reset_dirty_bitmap(s->copy_bitmap, start, s->cluster_size);
-    nbytes = MIN(s->cluster_size, s->len - start);
     if (!*bounce_buffer) {
         *bounce_buffer = blk_blockalign(s->source, s->cluster_size);
     }
 
-    ret = blk_co_pread(s->source, start, nbytes, *bounce_buffer, read_flags);
+    ret = blk_co_pread(s->source, start, nbytes, *bounce_buffer, 0);
     if (ret < 0) {
         trace_block_copy_with_bounce_buffer_read_fail(s, start, ret);
         if (error_is_read) {
@@ -186,8 +183,10 @@ static int coroutine_fn 
block_copy_with_bounce_buffer(BlockCopyState *s,
     }
 
     return nbytes;
+
 fail:
     bdrv_set_dirty_bitmap(s->copy_bitmap, start, s->cluster_size);
+
     return ret;
 
 }
@@ -198,30 +197,28 @@ fail:
  */
 static int coroutine_fn block_copy_with_offload(BlockCopyState *s,
                                                 int64_t start,
-                                                int64_t end,
-                                                bool is_write_notifier)
+                                                int64_t end)
 {
     int ret;
     int nr_clusters;
     int nbytes;
-    int read_flags = is_write_notifier ? BDRV_REQ_NO_SERIALISING : 0;
 
     assert(QEMU_IS_ALIGNED(s->copy_range_size, s->cluster_size));
     assert(QEMU_IS_ALIGNED(start, s->cluster_size));
     nbytes = MIN(s->copy_range_size, MIN(end, s->len) - start);
+
     nr_clusters = DIV_ROUND_UP(nbytes, s->cluster_size);
     bdrv_reset_dirty_bitmap(s->copy_bitmap, start,
                             s->cluster_size * nr_clusters);
     ret = blk_co_copy_range(s->source, start, s->target, start, nbytes,
-                            read_flags, s->write_flags);
+                            0, s->write_flags);
     if (ret < 0) {
         trace_block_copy_with_offload_fail(s, start, ret);
         bdrv_set_dirty_bitmap(s->copy_bitmap, start,
                               s->cluster_size * nr_clusters);
-        return ret;
     }
 
-    return nbytes;
+    return ret < 0 ? ret : nbytes;
 }
 
 /*
@@ -296,8 +293,7 @@ int64_t block_copy_reset_unallocated(BlockCopyState *s,
 
 int coroutine_fn block_copy(BlockCopyState *s,
                             int64_t start, uint64_t bytes,
-                            bool *error_is_read,
-                            bool is_write_notifier)
+                            bool *error_is_read)
 {
     int ret = 0;
     int64_t end = bytes + start; /* bytes */
@@ -346,15 +342,13 @@ int coroutine_fn block_copy(BlockCopyState *s,
         trace_block_copy_process(s, start);
 
         if (s->use_copy_range) {
-            ret = block_copy_with_offload(s, start, dirty_end,
-                                          is_write_notifier);
+            ret = block_copy_with_offload(s, start, dirty_end);
             if (ret < 0) {
                 s->use_copy_range = false;
             }
         }
         if (!s->use_copy_range) {
             ret = block_copy_with_bounce_buffer(s, start, dirty_end,
-                                                is_write_notifier,
                                                 error_is_read, &bounce_buffer);
         }
         if (ret < 0) {
diff --git a/block/replication.c b/block/replication.c
index 936b2f8b5a..99532ce521 100644
--- a/block/replication.c
+++ b/block/replication.c
@@ -543,7 +543,7 @@ static void replication_start(ReplicationState *rs, 
ReplicationMode mode,
 
         s->backup_job = backup_job_create(
                                 NULL, s->secondary_disk->bs, 
s->hidden_disk->bs,
-                                0, MIRROR_SYNC_MODE_NONE, NULL, 0, false,
+                                0, MIRROR_SYNC_MODE_NONE, NULL, 0, false, NULL,
                                 BLOCKDEV_ON_ERROR_REPORT,
                                 BLOCKDEV_ON_ERROR_REPORT, JOB_INTERNAL,
                                 backup_job_completed, bs, NULL, &local_err);
diff --git a/blockdev.c b/blockdev.c
index fbef6845c8..f89e48fc79 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -3601,6 +3601,7 @@ static BlockJob *do_backup_common(BackupCommon *backup,
     job = backup_job_create(backup->job_id, bs, target_bs, backup->speed,
                             backup->sync, bmap, backup->bitmap_mode,
                             backup->compress,
+                            backup->filter_node_name,
                             backup->on_source_error,
                             backup->on_target_error,
                             job_flags, NULL, NULL, txn, errp);
diff --git a/tests/qemu-iotests/056 b/tests/qemu-iotests/056
index 98c55d8e5a..f39287c162 100755
--- a/tests/qemu-iotests/056
+++ b/tests/qemu-iotests/056
@@ -133,6 +133,7 @@ class BackupTest(iotests.QMPTestCase):
         self.vm = iotests.VM()
         self.test_img = img_create('test')
         self.dest_img = img_create('dest')
+        self.dest_img2 = img_create('dest2')
         self.ref_img = img_create('ref')
         self.vm.add_drive(self.test_img)
         self.vm.launch()
@@ -141,6 +142,7 @@ class BackupTest(iotests.QMPTestCase):
         self.vm.shutdown()
         try_remove(self.test_img)
         try_remove(self.dest_img)
+        try_remove(self.dest_img2)
         try_remove(self.ref_img)
 
     def hmp_io_writes(self, drive, patterns):
@@ -253,9 +255,9 @@ class BackupTest(iotests.QMPTestCase):
         res = self.vm.qmp('query-block-jobs')
         self.assert_qmp(res, 'return[0]/status', 'concluded')
         # Leave zombie job un-dismissed, observe a failure:
-        res = self.qmp_backup_and_wait(serror="Node 'drive0' is busy: block 
device is in use by block job: backup",
+        res = self.qmp_backup_and_wait(serror="Job ID 'drive0' already in use",
                                        device='drive0', format=iotests.imgfmt,
-                                       sync='full', target=self.dest_img,
+                                       sync='full', target=self.dest_img2,
                                        auto_dismiss=False)
         self.assertEqual(res, False)
         # OK, dismiss the zombie.
@@ -265,7 +267,7 @@ class BackupTest(iotests.QMPTestCase):
         self.assert_qmp(res, 'return', [])
         # Ensure it's really gone.
         self.qmp_backup_and_wait(device='drive0', format=iotests.imgfmt,
-                                 sync='full', target=self.dest_img,
+                                 sync='full', target=self.dest_img2,
                                  auto_dismiss=False)
 
     def dismissal_failure(self, dismissal_opt):
diff --git a/tests/qemu-iotests/257 b/tests/qemu-iotests/257
index de8b45f094..a9828251cf 100755
--- a/tests/qemu-iotests/257
+++ b/tests/qemu-iotests/257
@@ -190,6 +190,7 @@ def blockdev_backup(vm, device, target, sync, **kwargs):
                         device=device,
                         target=target,
                         sync=sync,
+                        filter_node_name='backup-top',
                         **kwargs)
     return result
 
@@ -216,7 +217,7 @@ def backup(drive, n, filepath, sync, **kwargs):
                              job_id=job_id, **kwargs)
     return job_id
 
-def perform_writes(drive, n):
+def perform_writes(drive, n, filter_node_name=None):
     log("--- Write #{:d} ---\n".format(n))
     for pattern in GROUPS[n].patterns:
         cmd = "write -P{:s} 0x{:07x} 0x{:x}".format(
@@ -224,7 +225,7 @@ def perform_writes(drive, n):
             pattern.offset,
             pattern.size)
         log(cmd)
-        log(drive.vm.hmp_qemu_io(drive.node, cmd))
+        log(drive.vm.hmp_qemu_io(filter_node_name or drive.node, cmd))
     bitmaps = drive.vm.query_bitmaps()
     log({'bitmaps': bitmaps}, indent=2)
     log('')
@@ -355,7 +356,7 @@ def test_bitmap_sync(bsync_mode, msync_mode='bitmap', 
failure=None):
             """Issue writes while the job is open to test bitmap divergence."""
             # Note: when `failure` is 'intermediate', this isn't called.
             log('')
-            bitmaps = perform_writes(drive0, 2)
+            bitmaps = perform_writes(drive0, 2, filter_node_name='backup-top')
             # Named bitmap (static, should be unchanged)
             ebitmap.compare(vm.get_bitmap(drive0.node, 'bitmap0',
                                           bitmaps=bitmaps))
diff --git a/tests/qemu-iotests/257.out b/tests/qemu-iotests/257.out
index ec7e25877b..64dd460055 100644
--- a/tests/qemu-iotests/257.out
+++ b/tests/qemu-iotests/257.out
@@ -30,7 +30,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -78,7 +78,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -92,7 +92,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "never", "device": "drive0", "job-id": "backup_1", 
"sync": "bitmap", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "never", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "bitmap", "target": 
"backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -205,7 +205,7 @@ expecting 15 dirty sectors; have 15. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -219,7 +219,7 @@ expecting 15 dirty sectors; have 15. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "never", "device": "drive0", "job-id": "backup_2", 
"sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "never", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -290,7 +290,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -338,7 +338,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -354,7 +354,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "never", "device": "drive0", "job-id": "backup_1", 
"sync": "bitmap", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "never", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "bitmap", "target": 
"backup_target_1"}}
 {"return": {}}
 {"data": {"action": "report", "device": "backup_1", "operation": "read"}, 
"event": "BLOCK_JOB_ERROR", "timestamp": {"microseconds": "USECS", "seconds": 
"SECS"}}
 {"data": {"device": "backup_1", "error": "Input/output error", "len": 393216, 
"offset": 65536, "speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", 
"timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
@@ -416,7 +416,7 @@ expecting 14 dirty sectors; have 14. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -430,7 +430,7 @@ expecting 14 dirty sectors; have 14. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "never", "device": "drive0", "job-id": "backup_2", 
"sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "never", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -501,7 +501,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -549,7 +549,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -563,7 +563,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "never", "device": "drive0", "job-id": "backup_1", 
"sync": "bitmap", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "never", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "bitmap", "target": 
"backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -676,7 +676,7 @@ expecting 15 dirty sectors; have 15. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -690,7 +690,7 @@ expecting 15 dirty sectors; have 15. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "never", "device": "drive0", "job-id": "backup_2", 
"sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "never", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -761,7 +761,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -809,7 +809,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -823,7 +823,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_1", "sync": "bitmap", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "bitmap", "target": 
"backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -936,7 +936,7 @@ expecting 15 dirty sectors; have 15. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -950,7 +950,7 @@ expecting 15 dirty sectors; have 15. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_2", "sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -1021,7 +1021,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -1069,7 +1069,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -1085,7 +1085,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_1", "sync": "bitmap", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "bitmap", "target": 
"backup_target_1"}}
 {"return": {}}
 {"data": {"action": "report", "device": "backup_1", "operation": "read"}, 
"event": "BLOCK_JOB_ERROR", "timestamp": {"microseconds": "USECS", "seconds": 
"SECS"}}
 {"data": {"device": "backup_1", "error": "Input/output error", "len": 393216, 
"offset": 65536, "speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", 
"timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
@@ -1147,7 +1147,7 @@ expecting 14 dirty sectors; have 14. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -1161,7 +1161,7 @@ expecting 14 dirty sectors; have 14. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_2", "sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -1232,7 +1232,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -1280,7 +1280,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -1294,7 +1294,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_1", "sync": "bitmap", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "bitmap", "target": 
"backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -1407,7 +1407,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -1421,7 +1421,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_2", "sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -1492,7 +1492,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -1540,7 +1540,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -1554,7 +1554,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_1", 
"sync": "bitmap", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "bitmap", "target": 
"backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -1667,7 +1667,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -1681,7 +1681,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_2", 
"sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -1752,7 +1752,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -1800,7 +1800,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -1816,7 +1816,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_1", 
"sync": "bitmap", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "bitmap", "target": 
"backup_target_1"}}
 {"return": {}}
 {"data": {"action": "report", "device": "backup_1", "operation": "read"}, 
"event": "BLOCK_JOB_ERROR", "timestamp": {"microseconds": "USECS", "seconds": 
"SECS"}}
 {"data": {"device": "backup_1", "error": "Input/output error", "len": 393216, 
"offset": 65536, "speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", 
"timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
@@ -1878,7 +1878,7 @@ expecting 13 dirty sectors; have 13. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -1892,7 +1892,7 @@ expecting 13 dirty sectors; have 13. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_2", 
"sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -1963,7 +1963,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -2011,7 +2011,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -2025,7 +2025,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_1", 
"sync": "bitmap", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "bitmap", "target": 
"backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -2138,7 +2138,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -2152,7 +2152,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_2", 
"sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -2223,7 +2223,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -2271,7 +2271,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -2285,7 +2285,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_1", "sync": "full", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "full", "target": 
"backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -2398,7 +2398,7 @@ expecting 15 dirty sectors; have 15. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -2412,7 +2412,7 @@ expecting 15 dirty sectors; have 15. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_2", "sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -2483,7 +2483,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -2531,7 +2531,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -2547,7 +2547,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_1", "sync": "full", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "full", "target": 
"backup_target_1"}}
 {"return": {}}
 {"data": {"action": "report", "device": "backup_1", "operation": "read"}, 
"event": "BLOCK_JOB_ERROR", "timestamp": {"microseconds": "USECS", "seconds": 
"SECS"}}
 {"data": {"device": "backup_1", "error": "Input/output error", "len": 
67108864, "offset": 983040, "speed": 0, "type": "backup"}, "event": 
"BLOCK_JOB_COMPLETED", "timestamp": {"microseconds": "USECS", "seconds": 
"SECS"}}
@@ -2609,7 +2609,7 @@ expecting 14 dirty sectors; have 14. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -2623,7 +2623,7 @@ expecting 14 dirty sectors; have 14. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_2", "sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -2694,7 +2694,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -2742,7 +2742,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -2756,7 +2756,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_1", "sync": "full", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "full", "target": 
"backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -2869,7 +2869,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -2883,7 +2883,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_2", "sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -2954,7 +2954,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -3002,7 +3002,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -3016,7 +3016,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_1", 
"sync": "full", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "full", "target": 
"backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -3129,7 +3129,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -3143,7 +3143,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_2", 
"sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -3214,7 +3214,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -3262,7 +3262,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -3278,7 +3278,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_1", 
"sync": "full", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "full", "target": 
"backup_target_1"}}
 {"return": {}}
 {"data": {"action": "report", "device": "backup_1", "operation": "read"}, 
"event": "BLOCK_JOB_ERROR", "timestamp": {"microseconds": "USECS", "seconds": 
"SECS"}}
 {"data": {"device": "backup_1", "error": "Input/output error", "len": 
67108864, "offset": 983040, "speed": 0, "type": "backup"}, "event": 
"BLOCK_JOB_COMPLETED", "timestamp": {"microseconds": "USECS", "seconds": 
"SECS"}}
@@ -3340,7 +3340,7 @@ expecting 1014 dirty sectors; have 1014. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -3354,7 +3354,7 @@ expecting 1014 dirty sectors; have 1014. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_2", 
"sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -3425,7 +3425,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -3473,7 +3473,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -3487,7 +3487,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_1", 
"sync": "full", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "full", "target": 
"backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -3600,7 +3600,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -3614,7 +3614,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_2", 
"sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -3685,7 +3685,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -3733,7 +3733,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -3747,7 +3747,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_1", "sync": "top", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "top", "target": "backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -3860,7 +3860,7 @@ expecting 15 dirty sectors; have 15. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -3874,7 +3874,7 @@ expecting 15 dirty sectors; have 15. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_2", "sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -3945,7 +3945,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -3993,7 +3993,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -4009,7 +4009,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_1", "sync": "top", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "top", "target": "backup_target_1"}}
 {"return": {}}
 {"data": {"action": "report", "device": "backup_1", "operation": "read"}, 
"event": "BLOCK_JOB_ERROR", "timestamp": {"microseconds": "USECS", "seconds": 
"SECS"}}
 {"data": {"device": "backup_1", "error": "Input/output error", "len": 458752, 
"offset": 65536, "speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", 
"timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
@@ -4071,7 +4071,7 @@ expecting 14 dirty sectors; have 14. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -4085,7 +4085,7 @@ expecting 14 dirty sectors; have 14. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_2", "sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -4156,7 +4156,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -4204,7 +4204,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -4218,7 +4218,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_1", "sync": "top", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "top", "target": "backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -4331,7 +4331,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -4345,7 +4345,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "job-id": 
"backup_2", "sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -4416,7 +4416,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -4464,7 +4464,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -4478,7 +4478,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_1", 
"sync": "top", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "top", "target": "backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -4591,7 +4591,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -4605,7 +4605,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_2", 
"sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -4676,7 +4676,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -4724,7 +4724,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -4740,7 +4740,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_1", 
"sync": "top", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "top", "target": "backup_target_1"}}
 {"return": {}}
 {"data": {"action": "report", "device": "backup_1", "operation": "read"}, 
"event": "BLOCK_JOB_ERROR", "timestamp": {"microseconds": "USECS", "seconds": 
"SECS"}}
 {"data": {"device": "backup_1", "error": "Input/output error", "len": 458752, 
"offset": 65536, "speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", 
"timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
@@ -4802,7 +4802,7 @@ expecting 14 dirty sectors; have 14. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -4816,7 +4816,7 @@ expecting 14 dirty sectors; have 14. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_2", 
"sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -4887,7 +4887,7 @@ write -P0x76 0x3ff0000 0x10000
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_0", "sync": "full", "target": "ref_target_0"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_0", "sync": "full", 
"target": "ref_target_0"}}
 {"return": {}}
 {"data": {"device": "ref_backup_0", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -4935,7 +4935,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_1", "sync": "full", "target": "ref_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_1", "sync": "full", 
"target": "ref_target_1"}}
 {"return": {}}
 {"data": {"device": "ref_backup_1", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -4949,7 +4949,7 @@ expecting 6 dirty sectors; have 6. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_1", 
"sync": "top", "target": "backup_target_1"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_1", "sync": "top", "target": "backup_target_1"}}
 {"return": {}}
 
 --- Write #2 ---
@@ -5062,7 +5062,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"ref_backup_2", "sync": "full", "target": "ref_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "ref_backup_2", "sync": "full", 
"target": "ref_target_2"}}
 {"return": {}}
 {"data": {"device": "ref_backup_2", "len": 67108864, "offset": 67108864, 
"speed": 0, "type": "backup"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": 
{"microseconds": "USECS", "seconds": "SECS"}}
 
@@ -5076,7 +5076,7 @@ expecting 12 dirty sectors; have 12. OK!
 {"execute": "job-dismiss", "arguments": {"id": "bdc-fmt-job"}}
 {"return": {}}
 {}
-{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "job-id": "backup_2", 
"sync": "bitmap", "target": "backup_target_2"}}
+{"execute": "blockdev-backup", "arguments": {"auto-finalize": false, "bitmap": 
"bitmap0", "bitmap-mode": "always", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "backup_2", "sync": "bitmap", "target": 
"backup_target_2"}}
 {"return": {}}
 {"execute": "job-finalize", "arguments": {"id": "backup_2"}}
 {"return": {}}
@@ -5139,155 +5139,155 @@ qemu_img compare "TEST_DIR/PID-img" 
"TEST_DIR/PID-fbackup2" ==> Identical, OK!
 
 -- Sync mode incremental tests --
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "on-success", 
"device": "drive0", "job-id": "api_job", "sync": "incremental", "target": 
"backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "on-success", 
"device": "drive0", "filter-node-name": "backup-top", "job-id": "api_job", 
"sync": "incremental", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "must provide a valid bitmap name 
for 'incremental' sync mode"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "always", 
"device": "drive0", "job-id": "api_job", "sync": "incremental", "target": 
"backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "always", 
"device": "drive0", "filter-node-name": "backup-top", "job-id": "api_job", 
"sync": "incremental", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "must provide a valid bitmap name 
for 'incremental' sync mode"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "never", "device": 
"drive0", "job-id": "api_job", "sync": "incremental", "target": 
"backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "never", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": 
"incremental", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "must provide a valid bitmap name 
for 'incremental' sync mode"}}
 
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"api_job", "sync": "incremental", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "api_job", "sync": "incremental", 
"target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "must provide a valid bitmap name 
for 'incremental' sync mode"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "on-success", "device": "drive0", "job-id": "api_job", "sync": 
"incremental", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "api_job", "sync": "incremental", "target": 
"backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "always", "device": "drive0", "job-id": "api_job", "sync": 
"incremental", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "always", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "incremental", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap sync mode must be 
'on-success' when using sync mode 'incremental'"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "never", "device": "drive0", "job-id": "api_job", "sync": 
"incremental", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "never", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "incremental", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap sync mode must be 
'on-success' when using sync mode 'incremental'"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", "device": 
"drive0", "job-id": "api_job", "sync": "incremental", "target": 
"backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": 
"incremental", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "always", "device": "drive0", "job-id": "api_job", "sync": 
"incremental", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "always", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "incremental", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap sync mode must be 
'on-success' when using sync mode 'incremental'"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "never", "device": "drive0", "job-id": "api_job", "sync": 
"incremental", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "never", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "incremental", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap sync mode must be 
'on-success' when using sync mode 'incremental'"}}
 
 -- Sync mode bitmap tests --
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "on-success", 
"device": "drive0", "job-id": "api_job", "sync": "bitmap", "target": 
"backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "on-success", 
"device": "drive0", "filter-node-name": "backup-top", "job-id": "api_job", 
"sync": "bitmap", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "must provide a valid bitmap name 
for 'bitmap' sync mode"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "always", 
"device": "drive0", "job-id": "api_job", "sync": "bitmap", "target": 
"backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "always", 
"device": "drive0", "filter-node-name": "backup-top", "job-id": "api_job", 
"sync": "bitmap", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "must provide a valid bitmap name 
for 'bitmap' sync mode"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "never", "device": 
"drive0", "job-id": "api_job", "sync": "bitmap", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "never", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": 
"bitmap", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "must provide a valid bitmap name 
for 'bitmap' sync mode"}}
 
-{"execute": "blockdev-backup", "arguments": {"device": "drive0", "job-id": 
"api_job", "sync": "bitmap", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"device": "drive0", 
"filter-node-name": "backup-top", "job-id": "api_job", "sync": "bitmap", 
"target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "must provide a valid bitmap name 
for 'bitmap' sync mode"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "on-success", "device": "drive0", "job-id": "api_job", "sync": 
"bitmap", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "api_job", "sync": "bitmap", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "always", "device": "drive0", "job-id": "api_job", "sync": 
"bitmap", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "always", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "bitmap", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "never", "device": "drive0", "job-id": "api_job", "sync": 
"bitmap", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "never", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "bitmap", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", "device": 
"drive0", "job-id": "api_job", "sync": "bitmap", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": 
"bitmap", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", "device": 
"drive0", "job-id": "api_job", "sync": "bitmap", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": 
"bitmap", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap sync mode must be given 
when providing a bitmap"}}
 
 -- Sync mode full tests --
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "on-success", 
"device": "drive0", "job-id": "api_job", "sync": "full", "target": 
"backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "on-success", 
"device": "drive0", "filter-node-name": "backup-top", "job-id": "api_job", 
"sync": "full", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Cannot specify bitmap sync mode 
without a bitmap"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "always", 
"device": "drive0", "job-id": "api_job", "sync": "full", "target": 
"backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "always", 
"device": "drive0", "filter-node-name": "backup-top", "job-id": "api_job", 
"sync": "full", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Cannot specify bitmap sync mode 
without a bitmap"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "never", "device": 
"drive0", "job-id": "api_job", "sync": "full", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "never", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": 
"full", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Cannot specify bitmap sync mode 
without a bitmap"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "on-success", "device": "drive0", "job-id": "api_job", "sync": 
"full", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "api_job", "sync": "full", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "always", "device": "drive0", "job-id": "api_job", "sync": 
"full", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "always", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "full", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "never", "device": "drive0", "job-id": "api_job", "sync": 
"full", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "never", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "full", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", "device": 
"drive0", "job-id": "api_job", "sync": "full", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": 
"full", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "never", "device": "drive0", "job-id": "api_job", "sync": 
"full", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "never", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "full", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap sync mode 'never' has no 
meaningful effect when combined with sync mode 'full'"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", "device": 
"drive0", "job-id": "api_job", "sync": "full", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": 
"full", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap sync mode must be given 
when providing a bitmap"}}
 
 -- Sync mode top tests --
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "on-success", 
"device": "drive0", "job-id": "api_job", "sync": "top", "target": 
"backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "on-success", 
"device": "drive0", "filter-node-name": "backup-top", "job-id": "api_job", 
"sync": "top", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Cannot specify bitmap sync mode 
without a bitmap"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "always", 
"device": "drive0", "job-id": "api_job", "sync": "top", "target": 
"backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "always", 
"device": "drive0", "filter-node-name": "backup-top", "job-id": "api_job", 
"sync": "top", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Cannot specify bitmap sync mode 
without a bitmap"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "never", "device": 
"drive0", "job-id": "api_job", "sync": "top", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "never", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": "top", 
"target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Cannot specify bitmap sync mode 
without a bitmap"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "on-success", "device": "drive0", "job-id": "api_job", "sync": 
"top", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "api_job", "sync": "top", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "always", "device": "drive0", "job-id": "api_job", "sync": 
"top", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "always", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "top", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "never", "device": "drive0", "job-id": "api_job", "sync": "top", 
"target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "never", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "top", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", "device": 
"drive0", "job-id": "api_job", "sync": "top", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": "top", 
"target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "never", "device": "drive0", "job-id": "api_job", "sync": "top", 
"target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "never", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "top", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap sync mode 'never' has no 
meaningful effect when combined with sync mode 'top'"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", "device": 
"drive0", "job-id": "api_job", "sync": "top", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": "top", 
"target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap sync mode must be given 
when providing a bitmap"}}
 
 -- Sync mode none tests --
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "on-success", 
"device": "drive0", "job-id": "api_job", "sync": "none", "target": 
"backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "on-success", 
"device": "drive0", "filter-node-name": "backup-top", "job-id": "api_job", 
"sync": "none", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Cannot specify bitmap sync mode 
without a bitmap"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "always", 
"device": "drive0", "job-id": "api_job", "sync": "none", "target": 
"backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "always", 
"device": "drive0", "filter-node-name": "backup-top", "job-id": "api_job", 
"sync": "none", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Cannot specify bitmap sync mode 
without a bitmap"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "never", "device": 
"drive0", "job-id": "api_job", "sync": "none", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap-mode": "never", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": 
"none", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Cannot specify bitmap sync mode 
without a bitmap"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "on-success", "device": "drive0", "job-id": "api_job", "sync": 
"none", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "api_job", "sync": "none", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "always", "device": "drive0", "job-id": "api_job", "sync": 
"none", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "always", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "none", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "never", "device": "drive0", "job-id": "api_job", "sync": 
"none", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", 
"bitmap-mode": "never", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "none", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", "device": 
"drive0", "job-id": "api_job", "sync": "none", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap404", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": 
"none", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap 'bitmap404' could not be 
found"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "on-success", "device": "drive0", "job-id": "api_job", "sync": 
"none", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "on-success", "device": "drive0", "filter-node-name": 
"backup-top", "job-id": "api_job", "sync": "none", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "sync mode 'none' does not produce 
meaningful bitmap outputs"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "always", "device": "drive0", "job-id": "api_job", "sync": 
"none", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "always", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "none", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "sync mode 'none' does not produce 
meaningful bitmap outputs"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "never", "device": "drive0", "job-id": "api_job", "sync": 
"none", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", 
"bitmap-mode": "never", "device": "drive0", "filter-node-name": "backup-top", 
"job-id": "api_job", "sync": "none", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "sync mode 'none' does not produce 
meaningful bitmap outputs"}}
 
-{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", "device": 
"drive0", "job-id": "api_job", "sync": "none", "target": "backup_target"}}
+{"execute": "blockdev-backup", "arguments": {"bitmap": "bitmap0", "device": 
"drive0", "filter-node-name": "backup-top", "job-id": "api_job", "sync": 
"none", "target": "backup_target"}}
 {"error": {"class": "GenericError", "desc": "Bitmap sync mode must be given 
when providing a bitmap"}}
 
-- 
2.21.0




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