On Wed, Feb 22, 2012 at 05:13:32PM +, Federico Simoncelli wrote:
Hi,
recently I've been working on live block migration combining the live
snapshots and the blkmirror patch sent by Marcelo Tosatti few months ago.
The design is summarized at this url as Mirrored-Snapshot:
On 03/05/2012 09:59 AM, Marcelo Tosatti wrote:
On Wed, Feb 22, 2012 at 05:13:32PM +, Federico Simoncelli wrote:
Hi,
recently I've been working on live block migration combining the live
snapshots and the blkmirror patch sent by Marcelo Tosatti few months ago.
The design is summarized at
On Mon, Mar 05, 2012 at 10:20:36AM -0700, Eric Blake wrote:
On 03/05/2012 09:59 AM, Marcelo Tosatti wrote:
On Wed, Feb 22, 2012 at 05:13:32PM +, Federico Simoncelli wrote:
Hi,
recently I've been working on live block migration combining the live
snapshots and the blkmirror patch sent
Il 05/03/2012 18:44, Marcelo Tosatti ha scritto:
OK, can't it be fixed by image streaming on top of a blkmirror device?
This would avoid a duplicate interface (such as no need to snapshot_blkdev
to change to final copy).
That is, start image streaming to a blkmirror device so that updates
On Wed, Feb 22, 2012 at 5:13 PM, Federico Simoncelli
fsimo...@redhat.com wrote:
Step 3 - Mirrored Live Snapshot
===
A mirrored live snapshot is issued using src/hd0snap1 and dst/hd0snap1 as
image files. (Where - stands for has backing file)
[src/hd0base] -
- Original Message -
From: Stefan Hajnoczi stefa...@gmail.com
To: Federico Simoncelli fsimo...@redhat.com
Cc: qemu-devel@nongnu.org, kw...@redhat.com, mtosa...@redhat.com
Sent: Tuesday, February 28, 2012 4:47:48 PM
Subject: Re: [Qemu-devel] Live Block Migration using Mirroring
Il 28/02/2012 16:47, Stefan Hajnoczi ha scritto:
At this stage we have dst/hd0snap1 opened with BDRV_O_NO_BACKING. If
it has no backing file and the guest issues a write request that is
smaller than a cluster in the image file, the untouched areas of that
cluster will be populated with
Il 28/02/2012 18:15, Federico Simoncelli ha scritto:
Thank you for getting this. Being able to have a bogus backing file was
a bonus but it's not really required for the mirrored live block migration.
We can add the support for switching the backing file in the drive-reopen
part.
Wait, it's
Block Migration using Mirroring
Il 28/02/2012 18:15, Federico Simoncelli ha scritto:
Thank you for getting this. Being able to have a bogus backing file
was
a bonus but it's not really required for the mirrored live block
migration.
We can add the support for switching the backing file
Il 28/02/2012 18:46, Federico Simoncelli ha scritto:
Thank you for getting this. Being able to have a bogus backing file
was a bonus but it's not really required for the mirrored live block
migration. We can add the support for switching the backing file in the
drive-reopen part.
- Original Message -
From: Paolo Bonzini pbonz...@redhat.com
To: qemu-devel@nongnu.org
Sent: Tuesday, February 28, 2012 7:02:40 PM
Subject: Re: [Qemu-devel] Live Block Migration using Mirroring
Il 28/02/2012 18:46, Federico Simoncelli ha scritto:
Thank you for getting
On Wed, Feb 22, 2012 at 5:13 PM, Federico Simoncelli
fsimo...@redhat.com wrote:
Preparation
===
$ mkdir /tmp/{src/dst}
$ qemu-img create -f qcow2 /tmp/src/hd0base.qcow2 20G
Formatting '/tmp/src/hd0base.qcow2', fmt=qcow2 size=21474836480
encryption=off cluster_size=65536
Step 1 -
- Original Message -
From: Stefan Hajnoczi stefa...@gmail.com
To: Federico Simoncelli fsimo...@redhat.com
Cc: qemu-devel@nongnu.org, kw...@redhat.com, mtosa...@redhat.com
Sent: Thursday, February 23, 2012 4:47:38 PM
Subject: Re: [Qemu-devel] Live Block Migration using Mirroring
On Wed, Feb 22, 2012 at 5:13 PM, Federico Simoncelli
fsimo...@redhat.com wrote:
recently I've been working on live block migration combining the live
snapshots and the blkmirror patch sent by Marcelo Tosatti few months ago.
The design is summarized at this url as Mirrored-Snapshot:
- Original Message -
From: Stefan Hajnoczi stefa...@gmail.com
To: Federico Simoncelli fsimo...@redhat.com
Cc: qemu-devel@nongnu.org, kw...@redhat.com, mtosa...@redhat.com
Sent: Thursday, February 23, 2012 5:35:23 PM
Subject: Re: [Qemu-devel] Live Block Migration using Mirroring
Hi,
recently I've been working on live block migration combining the live
snapshots and the blkmirror patch sent by Marcelo Tosatti few months ago.
The design is summarized at this url as Mirrored-Snapshot:
http://www.ovirt.org/wiki/Features/Design/StorageLiveMigration
The design assumes that
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