Bug#534880: linux-image-2.6.26-2-xen-686: domU hang and are unresponsive
Package: linux-image-2.6.26-2-xen-686
Version: 2.6.26-15lenny3
Severity: important
we've been using xen on debian extensively for the last couple years, and it's
overall been great for freegeek!
unfortunately, in the last couple weeks, i've been experiencing some issues
with some domU machines crashing on lenny xen dom0.
at some point, the domU just hangs, and "xm console" is unresponsive. still
able to ping the domU server, but not log in via ssh, and existing ssh
connections stop working. "xm reboot" and "xm shutdown" are useless.
eventually, we "xm destroy" it, and it continues to work for another 1-3 days.
load on the dom0 doesn't seem high in any way. load levels on the domU seem
reasonable (usually less than 1-2 with a 2 processor system).
nothing obvious in the dom1 or domU syslog entries, in /var/log/xend/*.log.
we've seen this happen on 3 separate dom0 servers, with 3 separate domU xen
servers. other domU servers running on the same dom0 continue to work fine.
it's happening on two lenny xen servers, one of which was cleanly installed as
a lenny server post-release, one of which was upgraded from etch, and one of
which is just etch running the lenny xen kernel.
i noticed that we upgraded the kernel to the current version around june 2nd
(though the problems didn't really start till mid-june), which seems to have a
xen-specific changelog entry:
[ Ian Campbell ]
* xen: Fix missing check of interrupted code's code selector
(CVE-2009-1758)
no idea if that could possibly be relevent. i might try running an older kernel
and see if that stabalizes it at all.
i know this isn't much to go on for a bug report, but it's been kind of
crippling and i don't really know what to do. any suggestions on how to get
more useful troubleshooting information would be greatly appreciated.
live well,
vagrant
-- System Information:
Debian Release: 5.0.1
APT prefers stable
APT policy: (500, 'stable')
Architecture: i386 (i686)
Kernel: Linux 2.6.26-2-xen-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.utf8)
Shell: /bin/sh linked to /bin/bash
Versions of packages linux-image-2.6.26-2-xen-686 depends on:
ii initramfs-tools 0.92o tools for generating an initramfs
ii linux-modules-2.6.26-2-x 2.6.26-15lenny3 Linux 2.6.26 modules on i686
Versions of packages linux-image-2.6.26-2-xen-686 recommends:
ii libc6-xen 2.7-18 GNU C Library: Shared libraries [X
Versions of packages linux-image-2.6.26-2-xen-686 suggests:
ii grub 0.97-47lenny2 GRand Unified Bootloader (Legacy v
pn linux-doc-2.6.26 <none> (no description available)
-- no debconf information
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