From: "Richard W.M. Jones" <rjones@redhat.com>
To: Dave Anderson <anderson@redhat.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>,
Luiz Capitulino <lcapitulino@redhat.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [Question] dump memory when host pci device is used by guest
Date: Fri, 21 Oct 2011 15:12:41 +0100 [thread overview]
Message-ID: <20111021141241.GV8872@amd.home.annexia.org> (raw)
In-Reply-To: <dcfaf76d-0e02-4e19-8c64-e0d127907398@zmail05.collab.prod.int.phx2.redhat.com>
On Fri, Oct 21, 2011 at 09:02:37AM -0400, Dave Anderson wrote:
> It would be kind of cool if there was a "/dev/mem"-like interface
> to a KVM guest's physical memory, so that you could sit on a KVM host
> and enter "crash vmlinux-of-guest /dev/mem-of-guest" in order to
> run live analysis of a guest.
OT for this thread, but this sort of thing does exist, kind of.
You can send monitor commands to qemu to read physical and virtual
memory ("pmemsave" and "memsave" respectively). At least one, and
possibly now both of these are bound through libvirt APIs:
http://libvirt.org/html/libvirt-libvirt.html#virDomainMemoryPeek
Here was your previous response about 4 years ago:
https://www.redhat.com/archives/crash-utility/2008-August/msg00032.html
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
libguestfs lets you edit virtual machines. Supports shell scripting,
bindings from many languages. http://libguestfs.org
next prev parent reply other threads:[~2011-10-21 14:12 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-07 9:46 [Qemu-devel] [Question] dump memory when host pci device is used by guest Wen Congyang
2011-10-07 10:16 ` Jan Kiszka
2011-10-07 12:25 ` Wen Congyang
2011-10-07 12:56 ` Jan Kiszka
2011-10-07 14:05 ` Wen Congyang
2011-10-07 15:06 ` Jan Kiszka
2011-10-10 9:00 ` Daniel P. Berrange
2011-10-08 15:16 ` Richard W.M. Jones
2011-10-09 8:49 ` Jan Kiszka
2011-10-09 10:23 ` Richard W.M. Jones
2011-10-09 10:26 ` Jan Kiszka
2011-10-10 2:21 ` Wen Congyang
2011-10-10 6:52 ` Jan Kiszka
2011-10-10 6:59 ` Wen Congyang
2011-10-10 7:01 ` Jan Kiszka
2011-10-10 7:17 ` Wen Congyang
2011-10-10 7:22 ` Jan Kiszka
2011-10-10 7:47 ` Wen Congyang
2011-10-10 7:48 ` Jan Kiszka
2011-10-10 8:28 ` Wen Congyang
2011-10-10 7:08 ` Alexander Graf
2011-10-10 7:10 ` Jan Kiszka
2011-10-10 9:02 ` Daniel P. Berrange
2011-10-10 9:34 ` Jan Kiszka
2011-10-11 2:27 ` Wen Congyang
2011-10-18 7:15 ` Wen Congyang
2011-10-18 7:52 ` Jan Kiszka
2011-10-18 7:58 ` Wen Congyang
2011-10-18 8:19 ` Jan Kiszka
2011-10-18 8:25 ` Wen Congyang
2011-10-18 8:26 ` Jan Kiszka
2011-10-18 8:31 ` Wen Congyang
2011-10-18 8:31 ` Jan Kiszka
2011-10-18 8:34 ` Richard W.M. Jones
2011-10-18 8:36 ` Jan Kiszka
2011-10-18 8:39 ` Jan Kiszka
2011-10-18 10:41 ` Paolo Bonzini
2011-10-18 10:42 ` Christoph Hellwig
2011-10-18 12:47 ` Jan Kiszka
2011-10-18 13:08 ` Christoph Hellwig
2011-10-18 13:13 ` Jan Kiszka
2011-10-18 10:47 ` Jan Kiszka
2011-10-18 13:30 ` Richard W.M. Jones
2011-10-18 13:34 ` Jan Kiszka
2011-10-18 9:43 ` Wen Congyang
2011-10-18 10:28 ` Jan Kiszka
2011-10-18 13:51 ` Wen Congyang
2011-10-18 13:55 ` Jan Kiszka
2011-10-18 14:17 ` Wen Congyang
2011-10-18 14:21 ` Jan Kiszka
2011-10-18 15:04 ` Wen Congyang
2011-10-18 15:27 ` Jan Kiszka
2011-10-19 1:23 ` Wen Congyang
2011-10-19 2:04 ` KAMEZAWA Hiroyuki
2011-10-19 11:40 ` Jan Kiszka
2011-10-20 1:22 ` Wen Congyang
2011-10-20 9:41 ` Jan Kiszka
2011-10-20 10:03 ` Wen Congyang
2011-10-21 7:11 ` Jan Kiszka
2011-10-21 7:50 ` Wen Congyang
2011-10-21 13:02 ` Dave Anderson
2011-10-21 13:16 ` Jan Kiszka
2011-10-21 14:12 ` Richard W.M. Jones [this message]
2011-10-24 2:25 ` Wen Congyang
2011-10-24 14:25 ` Dave Anderson
2011-10-24 15:01 ` Avi Kivity
2011-10-24 15:25 ` Dave Anderson
2011-10-24 15:30 ` Avi Kivity
2011-10-24 15:58 ` Dave Anderson
2011-10-25 1:37 ` Wen Congyang
2011-10-25 7:37 ` Jan Kiszka
2011-10-25 8:06 ` Wen Congyang
2011-10-25 8:23 ` Avi Kivity
2011-10-25 8:35 ` Paolo Bonzini
2011-10-25 8:52 ` Avi Kivity
2011-10-25 8:56 ` Paolo Bonzini
2011-10-25 9:19 ` Jan Kiszka
2011-10-25 13:18 ` Dave Anderson
2011-10-25 13:22 ` Avi Kivity
2011-10-18 7:58 ` Daniel P. Berrange
2011-10-18 8:17 ` Jan Kiszka
2011-10-18 8:25 ` Jan Kiszka
2011-10-18 8:25 ` Daniel P. Berrange
2011-10-18 8:30 ` Jan Kiszka
2011-10-10 9:08 ` Daniel P. Berrange
2011-10-10 9:10 ` Daniel P. Berrange
2011-10-10 9:34 ` Richard W.M. Jones
2011-10-10 10:17 ` Jan Kiszka
2011-10-10 9:34 ` Jan Kiszka
2011-10-10 10:19 ` Daniel P. Berrange
2011-10-11 2:20 ` Wen Congyang
2011-10-11 6:58 ` Jan Kiszka
2011-10-11 7:13 ` Wen Congyang
2011-10-10 10:21 ` Alon Levy
2011-10-10 10:48 ` Paolo Bonzini
2011-10-10 11:04 ` Daniel P. Berrange
2011-10-10 11:09 ` Paolo Bonzini
2011-10-10 12:00 ` [Qemu-devel] windows crash dump header. was: " Alon Levy
2011-10-10 12:38 ` Paolo Bonzini
2011-10-10 13:47 ` Alon Levy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20111021141241.GV8872@amd.home.annexia.org \
--to=rjones@redhat.com \
--cc=anderson@redhat.com \
--cc=jan.kiszka@siemens.com \
--cc=kamezawa.hiroyu@jp.fujitsu.com \
--cc=lcapitulino@redhat.com \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).