[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH 0/3] sheepdog: support online snapshot from qemu
|
From: |
Eric Blake |
|
Subject: |
Re: [Qemu-devel] [PATCH 0/3] sheepdog: support online snapshot from qemu-img |
|
Date: |
Thu, 25 Apr 2013 07:44:29 -0600 |
|
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130402 Thunderbird/17.0.5 |
On 04/25/2013 04:37 AM, MORITA Kazutaka wrote:
> Currently, we can take sheepdog snapshots of running VMs only from the
> qemu monitor. This series allows taking online snapshots from
> qemu-img.
Is that even safe? We specifically recommend that users NOT use
qemu-img on any image that is in-use by a qemu process, and instead only
use qemu monitor commands; since qemu-img may see inconsistent state,
and worse, any writes that qemu-img do may cause qemu to see
inconsistent state and cause corruption to the running guest.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
signature.asc
Description: OpenPGP digital signature