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 08:49:47 -0500 [thread overview]
Message-ID: <4A55F57B.3030306@codemonkey.ws> (raw)
In-Reply-To: <1247140059-5034-4-git-send-email-pbonzini@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.
This is functionally equivalent to migrate "exec:dd of=filename", no?
I don't think there's value in introduce a new monitor command that just
does the above.
If you were truly dumping an actual core file and things remained
"live", that would be compelling, but it would be a lot easier to just
implement that as an external process. If you just used a table that
mapped section names and versions to length, you only really need to
understand the format of ram and cpu save sections.
Regards,
Anthony Liguori
next prev parent reply other threads:[~2009-07-09 13:49 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 [this message]
2009-07-09 14:06 ` Paolo Bonzini
2009-07-09 14:43 ` Anthony Liguori
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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