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From: Jes Sorensen <Jes.Sorensen@redhat.com>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Kevin Wolf <kwolf@redhat.com>,
	dlaor@redhat.com, Marcelo Tosatti <mtosatti@redhat.com>,
	qemu-devel <qemu-devel@nongnu.org>, Avi Kivity <avi@redhat.com>,
	Stefan Hajnoczi <stefan.hajnoczi@uk.ibm.com>
Subject: Re: [Qemu-devel] [RFC] live snapshot, live merge, live block migration
Date: Thu, 12 May 2011 17:37:39 +0200	[thread overview]
Message-ID: <4DCBFEC3.7010005@redhat.com> (raw)
In-Reply-To: <4DC806D7.6090400@codemonkey.ws>

On 05/09/11 17:23, Anthony Liguori wrote:
>>
>> * Live snapshots and live snapshot merge
>>
>> Live snapshot is already incorporated (by Jes) in qemu (still need
>> qemu-agent work to freeze the guest FS).
> 
> Live snapshot is unfortunately not really "live".  It runs a lot of
> operations synchronously which will cause the guest to incur downtime.
> 
> We really need to refactor it to truly be live.

We keep having this discussion, but as pointed out in my last reply on
this, you can pre-create your image if you so desire. The actual
snapshot then becomes less in one command. Yes we can make it even
nicer, but what we have now is far less bad than you make it out to be.

Cheers,
Jes

  parent reply	other threads:[~2011-05-12 15:38 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-09 13:40 [Qemu-devel] [RFC] live snapshot, live merge, live block migration Dor Laor
2011-05-09 15:23 ` Anthony Liguori
2011-05-09 20:58   ` Dor Laor
2011-05-12 14:18   ` Marcelo Tosatti
2011-05-12 15:37   ` Jes Sorensen [this message]
2011-05-10 14:13 ` Marcelo Tosatti
2011-05-12 15:33 ` Jes Sorensen
2011-05-13  3:16   ` Jagane Sundar
2011-05-15 21:14     ` Dor Laor
2011-05-15 21:38       ` Jagane Sundar
2011-05-15 21:38         ` Jagane Sundar
2011-05-16  7:53         ` Dor Laor
2011-05-16  7:53           ` [Qemu-devel] " Dor Laor
2011-05-16  8:23           ` Jagane Sundar
2011-05-16  8:23             ` [Qemu-devel] " Jagane Sundar
2011-05-17 22:53             ` Dor Laor
2011-05-17 22:53               ` [Qemu-devel] " Dor Laor
2011-05-18 15:49               ` Jagane Sundar
2011-05-18 15:49                 ` Jagane Sundar
2011-05-20 12:19 ` Stefan Hajnoczi
2011-05-20 12:39   ` Jes Sorensen
2011-05-20 12:49     ` Stefan Hajnoczi
2011-05-20 12:56       ` Jes Sorensen
2011-05-22  9:52   ` Dor Laor
2011-05-23 13:02     ` Stefan Hajnoczi
2011-05-27 16:46       ` Stefan Hajnoczi
2011-05-27 17:16         ` Jagane Sundar
2011-05-23  5:42   ` Jagane Sundar

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