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[PATCH 0/3] qsd: Add --daemonize; and add job quit tests
From: |
Hanna Reitz |
Subject: |
[PATCH 0/3] qsd: Add --daemonize; and add job quit tests |
Date: |
Wed, 22 Dec 2021 12:41:50 +0100 |
Hi,
This series began as an attempt to write a reproducer for the following
case:
You have a mirror job in READY state with a target that’s slow. There
is still a lot of data to be written (because of active I/O in the
guest). You quit qemu, and you expect quitting to be reasonably
quick.
Old qemu used to still complete the job, which may take forever, new
qemu cancels the job, which is better.
That’s basically patch 3 in this series, which tests this behavior once
for mirror and once for active commit.
Problem is, how to simulate a slow target for this; if you use a
throttle node in the same qemu process that you’re trying to test, qemu
will just drain it when quitting, and so the supposedly slow target
becomes very fast.
So we need an external instance, and what better to use but the storage
daemon. I found that it would be nice if for this it had a --daemonize
option (well, it would be nice in general), and so the first two patches
implement that.
Hanna Reitz (3):
qsd: Add pre-init argument parsing pass
qsd: Add --daemonize
iotests/185: Add post-READY quit tests
docs/tools/qemu-storage-daemon.rst | 7 +
storage-daemon/qemu-storage-daemon.c | 188 +++++++++++++++++++++++++-
tests/qemu-iotests/185 | 190 ++++++++++++++++++++++++++-
tests/qemu-iotests/185.out | 48 +++++++
4 files changed, 430 insertions(+), 3 deletions(-)
--
2.33.1
- [PATCH 0/3] qsd: Add --daemonize; and add job quit tests,
Hanna Reitz <=