From: Anthony Liguori <anthony@codemonkey.ws>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 3/3] add live dumping capability
Date: Thu, 09 Jul 2009 09:43:31 -0500 [thread overview]
Message-ID: <4A560213.4000106@codemonkey.ws> (raw)
In-Reply-To: <4A55F95A.8080409@redhat.com>
Paolo Bonzini wrote:
>>> With the previous cleanups in place, it is easy to trigger
>>> restart when the state machine goes from the COMPLETING to the
>>> COMPLETED state. Besides this, the patch is just simple
>>> scaffolding for the monitor command and to migrate to a file
>>> rather than a pipe (which is a bit simpler because we do not
>>> need non-blocking I/O).
>>
>> Then this isn't live migration.
>
> Sorry, I cannot understand this remark.
You're using blocking I/O which will cause the guest to pause while disk
I/O is happening.
If you want to see this in action, before running dump, type
"migrate_set_rate 10G" in the monitor. It only appears live now because
the default rate limit is pretty close to the write speed of a typical disk.
Regards,
Anthony Liguori
next prev parent reply other threads:[~2009-07-09 14:43 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-09 11:47 [Qemu-devel] [PATCH 0/3] add "core dump"-like capability Paolo Bonzini
2009-07-09 11:47 ` [Qemu-devel] [PATCH 1/3] move state and mon_resume to struct MigrationState Paolo Bonzini
2009-07-09 11:47 ` [Qemu-devel] [PATCH 2/3] move vm stop/start to migrate_set_state Paolo Bonzini
2009-07-09 13:45 ` Anthony Liguori
2009-07-09 13:48 ` Paolo Bonzini
2009-07-09 13:53 ` Anthony Liguori
2009-07-09 13:58 ` Paolo Bonzini
2009-07-09 14:41 ` Anthony Liguori
2009-07-10 23:14 ` Jamie Lokier
2009-07-11 0:04 ` malc
2009-07-11 0:42 ` Jamie Lokier
2009-07-11 0:55 ` Anthony Liguori
2009-07-11 0:58 ` Anthony Liguori
2009-07-11 1:42 ` Jamie Lokier
2009-07-12 3:31 ` Anthony Liguori
2009-07-12 14:22 ` Avi Kivity
2009-07-12 19:10 ` Anthony Liguori
2009-07-12 19:30 ` Avi Kivity
2009-07-13 5:31 ` Gleb Natapov
2009-07-13 8:05 ` Gleb Natapov
2009-07-13 14:52 ` Anthony Liguori
2009-07-14 8:48 ` Dor Laor
2009-07-14 14:41 ` Paolo Bonzini
2009-07-09 11:47 ` [Qemu-devel] [PATCH 3/3] add live dumping capability Paolo Bonzini
2009-07-09 13:49 ` Anthony Liguori
2009-07-09 14:06 ` Paolo Bonzini
2009-07-09 14:43 ` Anthony Liguori [this message]
2009-07-10 8:32 ` Paolo Bonzini
2009-07-10 12:51 ` Anthony Liguori
2009-07-09 13:42 ` [Qemu-devel] [PATCH 0/3] add "core dump"-like capability Anthony Liguori
2009-07-09 13:46 ` Paolo Bonzini
2009-07-09 13:51 ` Anthony Liguori
2009-07-09 14:46 ` Gerd Hoffmann
2009-07-09 16:20 ` Paolo Bonzini
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