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Re: [Qemu-devel] [PATCH] block: handle -EBUSY in bdrv_commit_all()


From: Kevin Wolf
Subject: Re: [Qemu-devel] [PATCH] block: handle -EBUSY in bdrv_commit_all()
Date: Tue, 06 Mar 2012 11:01:18 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.1) Gecko/20120209 Thunderbird/10.0.1

Am 05.03.2012 19:10, schrieb Stefan Hajnoczi:
> Monitor operations that manipulate image files must not execute while a
> background job (like image streaming) is in progress.  This prevents
> corruptions from happening when two pieces of code are manipulating the
> image file without knowledge of each other.
> 
> The monitor "commit" command raises QERR_DEVICE_IN_USE when
> bdrv_commit() returns -EBUSY but "commit all" has no error handling.
> This is easy to fix, although note that we do not deliver a detailed
> error about which device was busy in the "commit all" case.
> 
> Suggested-by: Kevin Wolf <address@hidden>
> Signed-off-by: Stefan Hajnoczi <address@hidden>

Thanks, applied to the block branch.

Kevin



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