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Re: [Qemu-devel] [Qemu-block] [PATCH] raw-posix: Fix .bdrv_co_get_block_
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [Qemu-block] [PATCH] raw-posix: Fix .bdrv_co_get_block_status() for unaligned image size |
Date: |
Tue, 9 Jun 2015 16:25:36 +0100 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Tue, Jun 09, 2015 at 10:55:08AM +0200, Kevin Wolf wrote:
> Image files with an unaligned image size have a final hole that starts
> at EOF, i.e. in the middle of a sector. Currently, *pnum == 0 is
> returned when checking the status of this sector. In qemu-img, this
> triggers an assertion failure.
>
> In order to fix this, one type for the sector that contains EOF must be
> found. Treating a hole as data is safe, so this patch rounds the
> calculated number of data sectors up, so that a partial sector at EOF is
> treated as a full data sector.
>
> This fixes https://bugzilla.redhat.com/show_bug.cgi?id=1229394
>
> Signed-off-by: Kevin Wolf <address@hidden>
> ---
> block/raw-posix.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
Thanks, applied to my block tree:
https://github.com/stefanha/qemu/commits/block
Stefan
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