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Re: [Qemu-block] [PATCH for 2.9 v3 00/10] block: Fixes regarding datapla
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-block] [PATCH for 2.9 v3 00/10] block: Fixes regarding dataplane and management operations |
Date: |
Tue, 11 Apr 2017 13:05:42 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
Am 10.04.2017 um 17:05 hat Fam Zheng geschrieben:
> v3: Respin the unmerged changes from v2 and include one new fix:
>
> (Yes, it is a big series for the last -rc, and I personally prefer the v2
> approach for the 4-9 part of the problem, which is much more mechanical.)
>
> - 1, 2 are redoing previous patch 4, using bdrv_parent_drained_begin/end.
> [Kevin]
> Also fix the ordering against aio_context_release. [Stefan]
> - 3 is unchanged from patch 6 in v2.
> - 4-9 are reworking of patch 5 following Paolo's suggestion, which allowed
> better patch split.
> - 10 is finding of a latent bug, which is revealed by patch 9.
>
> v2: - Drop patch 4 in v1. A second thought made me feel neither it nor Kevin's
> suggestion to move the BH process to bdrv_drain_recurse/BDRV_POLL_WHILE
> is a complete fix. So leave it for a separate patch.
> - Add rev-by to patches 1, 3, 4.
> - Split from patch 1 in v1 and add patch 2, for the new assertions.
> [Kevin]
> - Rewrite patch 5. Fix block job's co when a BDS is moved to a different
> aio context. [Kevin]
> - Add patch 6.
>
> Crashes are reported on dataplane devices when doing snapshot and commit under
> guest I/O.
>
> With this series, Ed's test case '176' now passes:
>
> https://github.com/skyportsystems/qemu-1/commits/eswierk-iotests-2.9
I had only two points for this series. The first is that it adds unused
functions, which doesn't hurt (but I might just send a PATCH 11/10 to
remove them again). The second one is that some sheepdog code is
suspicious, but if anything it just means that this series is incomplete,
so not a show stopper either.
Reviewed-by: Kevin Wolf <address@hidden>
- [Qemu-block] [PATCH for 2.9 v3 09/10] block: Use bdrv_coroutine_enter to start I/O coroutines, (continued)
- [Qemu-block] [PATCH for 2.9 v3 09/10] block: Use bdrv_coroutine_enter to start I/O coroutines, Fam Zheng, 2017/04/10
- [Qemu-block] [PATCH for 2.9 v3 10/10] block: Fix bdrv_co_flush early return, Fam Zheng, 2017/04/10
- Re: [Qemu-block] [PATCH for 2.9 v3 00/10] block: Fixes regarding dataplane and management operations, Stefan Hajnoczi, 2017/04/11
- Re: [Qemu-block] [PATCH for 2.9 v3 00/10] block: Fixes regarding dataplane and management operations,
Kevin Wolf <=
- [Qemu-block] [PATCH for 2.9 v3 11/10] block, async: Remove unused *_enter_if_inactive(), Kevin Wolf, 2017/04/11