[Bug 665163] [NEW] kernel panic with 'rejecting i/o to offline device'

[PaulN]

Public bug reported:

Hello,

I'm experiencing kernel panics on 5 identical Ubuntu 10.04 servers. They
are identical down to every bit of hardware and operating environment,
They've been reliably running Debian and Ubuntu Linux releases for
years. There's something in the latest Ubuntu 10.04 server builds that
has introduced a regression. They are used for heavy but sporadic CPU-
bound work.

Over the course of a day, the odds are that a singular server will
experience a kernel. Over two days it's practically guaranteed.

The kernel panic says:

"sd 2:0:0:0 rejecting i/o to offline device"

sd is the system drive and is most certainly online. A hard reboot fixes
the matter for the following day or so.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-25-generic 2.6.32-25.44
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.32-25.44-generic 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-generic x86_64
Architecture: amd64
Date: Fri Oct 22 16:19:50 2010
Frequency: Once a day.
ProcEnviron:
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: linux

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug lucid needs-upstream-testing regression-release

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kernel panic with 'rejecting i/o to offline device'
https://bugs.launchpad.net/bugs/665163
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