From: Chris Webb <chris@arachsys.com>
To: qemu-devel@nongnu.org, kvm@vger.kernel.org
Subject: qemu-kvm guest which won't 'cont' (emulation failure?)
Date: Mon, 24 Oct 2011 11:00:38 +0100 [thread overview]
Message-ID: <20111024100037.GS9917@arachsys.com> (raw)
I have a qemu-kvm guest (apparently a Ubuntu 11.04 x86-64 install) which has
stopped and refuses to continue:
(qemu) info status
VM status: paused
(qemu) cont
(qemu) info status
VM status: paused
The host is running linux 2.6.39.2 with qemu-kvm 0.14.1 on 24-core Opteron
6176 box, and has nine other 2GB production guests on it running absolutely
fine.
It's been a while since I've seen one of these. When I last saw a cluster of
them, they were emulation failures (big real mode instructions, maybe?). I
also remember a message about abnormal exit in the dmesg previously, but I
don't have that here. This time, there is no host kernel output at all, just
the paused guest.
I have qemu monitor access and can even strace the relevant qemu process if
necessary: is it possible to use this to diagnose what's caused this guest
to stop, e.g. the unsupported instruction if it's an emulation failure?
Cheers,
Chris.
WARNING: multiple messages have this Message-ID (diff)
From: Chris Webb <chris@arachsys.com>
To: qemu-devel@nongnu.org, kvm@vger.kernel.org
Subject: [Qemu-devel] qemu-kvm guest which won't 'cont' (emulation failure?)
Date: Mon, 24 Oct 2011 11:00:38 +0100 [thread overview]
Message-ID: <20111024100037.GS9917@arachsys.com> (raw)
I have a qemu-kvm guest (apparently a Ubuntu 11.04 x86-64 install) which has
stopped and refuses to continue:
(qemu) info status
VM status: paused
(qemu) cont
(qemu) info status
VM status: paused
The host is running linux 2.6.39.2 with qemu-kvm 0.14.1 on 24-core Opteron
6176 box, and has nine other 2GB production guests on it running absolutely
fine.
It's been a while since I've seen one of these. When I last saw a cluster of
them, they were emulation failures (big real mode instructions, maybe?). I
also remember a message about abnormal exit in the dmesg previously, but I
don't have that here. This time, there is no host kernel output at all, just
the paused guest.
I have qemu monitor access and can even strace the relevant qemu process if
necessary: is it possible to use this to diagnose what's caused this guest
to stop, e.g. the unsupported instruction if it's an emulation failure?
Cheers,
Chris.
next reply other threads:[~2011-10-24 10:00 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-24 10:00 Chris Webb [this message]
2011-10-24 10:00 ` [Qemu-devel] qemu-kvm guest which won't 'cont' (emulation failure?) Chris Webb
2011-10-24 10:42 ` Kevin Wolf
2011-10-24 10:58 ` Chris Webb
2011-10-24 10:58 ` [Qemu-devel] " Chris Webb
2011-10-24 11:18 ` Kevin Wolf
2011-10-24 11:29 ` Chris Webb
2011-10-24 11:36 ` Kevin Wolf
2011-10-24 12:05 ` Chris Webb
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=20111024100037.GS9917@arachsys.com \
--to=chris@arachsys.com \
--cc=kvm@vger.kernel.org \
--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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.