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From: Anthony Liguori <anthony@codemonkey.ws>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 0/3] add "core dump"-like capability
Date: Thu, 09 Jul 2009 08:42:53 -0500	[thread overview]
Message-ID: <4A55F3DD.3080802@codemonkey.ws> (raw)
In-Reply-To: <1247140059-5034-1-git-send-email-pbonzini@redhat.com>

Paolo Bonzini wrote:
> Unlike for example xen, KVM virtualized guests do not have a method to
> generate something like a core file.  While kdump could help in the
> case of a crash, it does not cater for non-Linux operating systems
> and does not help with dumping the state live, while the machine is
> running.
>   

Actually, you can use gdb to dump a core from a running guest.  Just do:

(gdb) gcore filename


But really, live migration gives you all the state you need.  Why not 
just introduce a third-party program that you could live migrate to via 
exec?

Regards,

Anthony Liguori

  parent reply	other threads:[~2009-07-09 13:43 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
2009-07-10  8:32         ` Paolo Bonzini
2009-07-10 12:51           ` Anthony Liguori
2009-07-09 13:42 ` Anthony Liguori [this message]
2009-07-09 13:46   ` [Qemu-devel] [PATCH 0/3] add "core dump"-like capability 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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