* [Qemu-devel] Question on qcow2 image with base image
@ 2010-02-02 17:47 Naphtali Sprei
2010-02-03 9:13 ` [Qemu-devel] " Kevin Wolf
0 siblings, 1 reply; 2+ messages in thread
From: Naphtali Sprei @ 2010-02-02 17:47 UTC (permalink / raw)
To: Kevin Wolf, qemu-devel
Hi,
when I use a qcow2 image based on a base image, what should happen when I invoke the commit command from the qemu monitor ?
Is it expected/intended to "flush" the data into the base image ?
IIUC, that is what happening in the released qemu (0.12).
I would expect it not to touch the base image.
Naphtali
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Qemu-devel] Re: Question on qcow2 image with base image
2010-02-02 17:47 [Qemu-devel] Question on qcow2 image with base image Naphtali Sprei
@ 2010-02-03 9:13 ` Kevin Wolf
0 siblings, 0 replies; 2+ messages in thread
From: Kevin Wolf @ 2010-02-03 9:13 UTC (permalink / raw)
To: Naphtali Sprei; +Cc: qemu-devel
Am 02.02.2010 18:47, schrieb Naphtali Sprei:
> Hi,
> when I use a qcow2 image based on a base image, what should happen when I invoke the commit command from the qemu monitor ?
> Is it expected/intended to "flush" the data into the base image ?
Yes, this is what it's meant to do.
> IIUC, that is what happening in the released qemu (0.12).
> I would expect it not to touch the base image.
Well, committing to the base image without touching it sounds rather
difficult. ;-) If you don't want to touch the backing file, don't use
the commit command.
Kevin
^ permalink raw reply [flat|nested] 2+ messages in thread
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2010-02-02 17:47 [Qemu-devel] Question on qcow2 image with base image Naphtali Sprei
2010-02-03 9:13 ` [Qemu-devel] " Kevin Wolf
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