[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] Issue with snapshot outside qcow2 disk - qemu 0.14.0

From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] Issue with snapshot outside qcow2 disk - qemu 0.14.0
Date: Thu, 10 Mar 2011 09:58:02 +0000

On Thu, Mar 10, 2011 at 9:32 AM, Jes Sorensen <address@hidden> wrote:
> On 03/10/11 10:27, Stefan Hajnoczi wrote:
>> I have CCed Jes who has been working on a live snapshot mechanism.  He
>> recently added the snapshot_blkdev monitor command that takes a
>> snapshot of a block device while the VM is running.  A new image file
>> is created based off the original image file (which will no longer be
>> modified), all new disk writes go to the new image file.  It is safe
>> to perform read-only access to the original image file.  There
>> currently is no support to merge the snapshot changes back into the
>> original image while the VM is running, but I think that is the next
>> planned step.
> Yes, keep in mind that the live snapshot is only for external snapshot
> files, it doesn't deal with internal snapshots.

Yep, that's why I'm interested in Saurav's use case.  Many use cases
work with either internal or external snapshot but it depends on the


reply via email to

[Prev in Thread] Current Thread [Next in Thread]