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Re: [Qemu-devel] [PATCH 00/15] block: Overriding the backing file with -
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH 00/15] block: Overriding the backing file with -drive |
Date: |
Thu, 18 Apr 2013 13:42:47 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Fri, Apr 12, 2013 at 10:47:53PM +0200, Kevin Wolf wrote:
> This is the next part of the driver-specific options. Looks like we're getting
> closer to pass file descriptors for the whole backing file chain. In fact, I
> hope we're now only lacking QMP support before we can actually use it. :-)
>
> This series adds support for the backing.* options namespace, and allows to
> use
> the file.filename option to configure the filename string for non-top-level
> BlockDriverStates. In the end you can use things like:
>
> -drive file=test.qcow2,backing.file.filename=/dev/fdset/1,
> backing.backing.file.driver=nbd,backing.backing.file.host=localhost
Nice series.
> On another note, I'm still not sure whether I should leave all of this work
> enabled for 1.5, or if we wouldn't be better off with disabling it for the
> release so that we have some additional months before we commit to the
> interface. Any opinions?
I suggest we leave this series and the io_flush series I sent recently
out of QEMU 1.5. Once they are reviewed, let's merge them into
block-next. When 1.6 opens they'll be the first things to get merged.
Unless there's an urgent need to get this into 1.5, I don't see the big
win - QMP changes are still missing anyway. Let's not rush it.
Also, I guess documentation changes are missing to really make this
feature ready for end-users :).
Stefan
- [Qemu-devel] [PATCH 11/15] rbd: Use bdrv_open options instead of filename, (continued)
- [Qemu-devel] [PATCH 11/15] rbd: Use bdrv_open options instead of filename, Kevin Wolf, 2013/04/12
- [Qemu-devel] [PATCH 12/15] sheepdog: Use bdrv_open options instead of filename, Kevin Wolf, 2013/04/12
- [Qemu-devel] [PATCH 13/15] vvfat: Use bdrv_open options instead of filename, Kevin Wolf, 2013/04/12
- [Qemu-devel] [PATCH 14/15] block: Remove filename parameter from .bdrv_file_open(), Kevin Wolf, 2013/04/12
- [Qemu-devel] [PATCH 15/15] block: Allow overriding backing.file.filename, Kevin Wolf, 2013/04/12
- Re: [Qemu-devel] [PATCH 00/15] block: Overriding the backing file with -drive,
Stefan Hajnoczi <=