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Re: [Qemu-devel] [PATCH 4/5] qcow2: implemented bdrv_is_opened_unclean
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-devel] [PATCH 4/5] qcow2: implemented bdrv_is_opened_unclean |
Date: |
Mon, 11 Jan 2016 18:37:09 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
Am 23.12.2015 um 08:46 hat Denis V. Lunev geschrieben:
> From: Olga Krishtal <address@hidden>
>
> While opening image we save dirty state in header_unclean.
> If the image was closed incorrectly we can retrieve this fact
> using bdrv_is_opened_unclean callback.
>
> This is necessary in case when we want to call brdv_check to
> repair dirty image.
>
> Signed-off-by: Olga Krishtal <address@hidden>
> Signed-off-by: Denis V. Lunev <address@hidden>
> CC: Kevin Wolf <address@hidden>
> CC: Max Reitz <address@hidden>
> CC: Eric Blake <address@hidden>
> CC: Fam Zheng <address@hidden>
What does this fix?
qcow2 isn't supposed to require a repair after an unclean shutdown. The
only exception is with lazy-refcounts=on, which already sets a dirty
flag in the header and triggers the repair in qcow2_open().
Kevin
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