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Re: [Qemu-devel] [PATCH] block: for HMP commit() operations on 'all', sk
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH] block: for HMP commit() operations on 'all', skip non-COW drives |
Date: |
Tue, 26 Feb 2013 17:14:33 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Tue, Feb 26, 2013 at 09:55:48AM -0500, Jeff Cody wrote:
> During a commit of 'all' using the HMP non-live commit, the operation
> is aborted and returns error on the first error enountered. When
> non-COW drives are in use (e.g. ejected floppy, cdrom, or drives without
> a backing parent), that means a commit all will return an error of either
> -ENOMEDIUM or -ENOTSUP. This is not desirable, so for the 'all' commit
> case, only attempt the commit if both bs->drv and bs->backing_hd are
> present.
>
> More succinctly: 'commit all' now means a commit on all COW drives.
>
> This means an individual commit to a specific non-COW drive will still
> return the appropriate error (-ENOMEDIUM if eject / not present, -ENOTSUP
> if no backing file).
>
> Reported-by: Jan Kiszka <address@hidden>
> Signed-off-by: Jeff Cody <address@hidden>
> ---
> block.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
Thanks, applied to my block tree:
https://github.com/stefanha/qemu/commits/block
Stefan
- [Qemu-devel] [PATCH] block: for HMP commit() operations on 'all', skip non-COW drives, Jeff Cody, 2013/02/26
- Re: [Qemu-devel] [PATCH] block: for HMP commit() operations on 'all', skip non-COW drives, Paolo Bonzini, 2013/02/26
- Re: [Qemu-devel] [PATCH] block: for HMP commit() operations on 'all', skip non-COW drives, Kevin Wolf, 2013/02/26
- Re: [Qemu-devel] [PATCH] block: for HMP commit() operations on 'all', skip non-COW drives,
Stefan Hajnoczi <=
- Re: [Qemu-devel] [PATCH] block: for HMP commit() operations on 'all', skip non-COW drives, Markus Armbruster, 2013/02/27