From: Paolo Bonzini <pbonzini@redhat.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: "Denis V. Lunev" <den@openvz.org>,
Laszlo Ersek <lersek@redhat.com>,
qemu-devel@nongnu.org, qemu-block@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 1/1] blk: do not select PFLASH device for internal snapshot
Date: Tue, 12 Jan 2016 16:35:14 +0100 [thread overview]
Message-ID: <56951D32.5080508@redhat.com> (raw)
In-Reply-To: <20160112152051.GG4841@noname.redhat.com>
On 12/01/2016 16:20, Kevin Wolf wrote:
> > Flash is already being snapshotted as part of saving RAM state. In
> > fact, for this reason the device (at least the one used with OVMF; I
> > haven't checked other pflash devices) can simply save it back to disk
> > on the migration destination, without the need to use "migrate -b" or
> > shared storage.
>
> Boy, is this ugly...
>
> What do you do with disk-only snapshots? The recovery only works as long
> as you have VM state.
Turns out I had misunderstood Denis's patch, but FWIW this _is_ done as
part of migration or savevm, so the VM state is available.
Paolo
next prev parent reply other threads:[~2016-01-12 15:35 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-12 6:03 [Qemu-devel] [PATCH 1/1] blk: do not select PFLASH device for internal snapshot Denis V. Lunev
2016-01-12 14:16 ` Kevin Wolf
2016-01-12 14:59 ` Paolo Bonzini
2016-01-12 15:13 ` Denis V. Lunev
2016-01-12 15:16 ` Peter Maydell
2016-01-12 15:26 ` Kevin Wolf
2016-01-12 15:20 ` Kevin Wolf
2016-01-12 15:35 ` Paolo Bonzini [this message]
2016-01-12 15:47 ` Denis V. Lunev
2016-01-12 16:35 ` Denis V. Lunev
2016-01-12 16:52 ` Kevin Wolf
2016-01-12 16:58 ` Denis V. Lunev
2016-01-12 17:40 ` Markus Armbruster
2016-01-12 17:50 ` Kevin Wolf
2016-01-12 17:54 ` Denis V. Lunev
2016-01-13 8:09 ` Markus Armbruster
2016-01-13 10:43 ` Laszlo Ersek
2016-01-12 17:53 ` Denis V. Lunev
2016-01-13 10:41 ` Laszlo Ersek
2016-01-13 10:37 ` Laszlo Ersek
2016-01-13 11:11 ` Denis V. Lunev
2016-01-13 12:15 ` Laszlo Ersek
2016-01-12 15:10 ` Denis V. Lunev
2016-01-12 15:28 ` Kevin Wolf
2016-01-14 11:33 ` [Qemu-devel] [PATCH 1/1] RESUME " Denis V. Lunev
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