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[Qemu-devel] [PATCH for-4.1 0/2] backup: Copy only dirty areas
From: |
Max Reitz |
Subject: |
[Qemu-devel] [PATCH for-4.1 0/2] backup: Copy only dirty areas |
Date: |
Thu, 1 Aug 2019 17:12:33 +0200 |
Hi,
In a discussion with Vladimir today, we noticed that the backup job
currently is pretty broken when using copy offloading. I don’t know
about you, but my local filesystem (XFS) supports copy offloading, so
the job uses it automatically. That means, that backup is broken and
has been broken for a year on my local FS.
The last working version was 2.12, so this isn’t a regression in 4.1.
We could thus justify moving it to 4.2. But I think this should really
go into 4.1, because this is not really an edge case and as far as I
know users cannot do anything to prevent the backup job from performing
copy offloading if the system and all involved block drivers support it.
I just wonder why nobody has noticed...
Max Reitz (2):
backup: Copy only dirty areas
iotests: Test backup job with two guest writes
block/backup.c | 13 +++++++++++--
tests/qemu-iotests/056 | 34 ++++++++++++++++++++++++++++++++++
tests/qemu-iotests/056.out | 4 ++--
3 files changed, 47 insertions(+), 4 deletions(-)
--
2.21.0
- [Qemu-devel] [PATCH for-4.1 0/2] backup: Copy only dirty areas,
Max Reitz <=
- [Qemu-devel] [PATCH for-4.1 1/2] backup: Copy only dirty areas, Max Reitz, 2019/08/01
- [Qemu-devel] [PATCH for-4.1 2/2] iotests: Test backup job with two guest writes, Max Reitz, 2019/08/01
- Re: [Qemu-devel] [PATCH for-4.1 2/2] iotests: Test backup job with two guest writes, Vladimir Sementsov-Ogievskiy, 2019/08/01
- Re: [Qemu-devel] [PATCH for-4.1 2/2] iotests: Test backup job with two guest writes, Max Reitz, 2019/08/01
- Re: [Qemu-devel] [PATCH for-4.1 2/2] iotests: Test backup job with two guest writes, Vladimir Sementsov-Ogievskiy, 2019/08/01
- Re: [Qemu-devel] [PATCH for-4.1 2/2] iotests: Test backup job with two guest writes, Max Reitz, 2019/08/01
- Re: [Qemu-devel] [PATCH for-4.1 2/2] iotests: Test backup job with two guest writes, Vladimir Sementsov-Ogievskiy, 2019/08/01
- Re: [Qemu-devel] [PATCH for-4.1 2/2] iotests: Test backup job with two guest writes, Vladimir Sementsov-Ogievskiy, 2019/08/01
Re: [Qemu-devel] [PATCH for-4.1 0/2] backup: Copy only dirty areas, Vladimir Sementsov-Ogievskiy, 2019/08/01