We have traced most of the 2.6.32-40 crashes to memory errors, but I will wait
a couple of days to be sure.
Also we are slowly moving towards the -oneiric-backports kernel in preparation
for the precise release, the 3.0.0-17 kernels has almost definitely
introduced a regression (mce error in comment #16). I think the uptimes of the
systems speak for themselves:
# Uptime | System Boot up
----------------------------+---------------------------------------------------
1 60 days, 09:08:35 | Linux 3.0.0-15-server Tue Jan 31 09:43:58 2012
-> 2 5 days, 05:23:23 | Linux 3.0.0-15-server Thu Apr 5 09:22:03 2012
3 3 days, 14:32:26 | Linux 3.0.0-17-server Sun Apr 1 18:47:57 2012
4 0 days, 10:05:16 | Linux 3.0.0-17-server Sat Mar 31 21:12:03 2012
5 0 days, 09:48:18 | Linux 3.0.0-17-server Sun Apr 1 07:57:30 2012
Similar on one of the systems, we had tested the generic kernel:
# Uptime | System Boot up
----------------------------+---------------------------------------------------
1 56 days, 01:37:30 | Linux 3.3.0-030300rc2-ge Fri Feb 3 10:59:03 2012
2 5 days, 23:50:19 | Linux 3.0.0-17-server Fri Mar 30 13:37:49 2012
3 3 days, 13:07:19 | Linux 3.0.0-17-server Thu Apr 5 15:05:29 2012
-> 4 1 day , 00:14:27 | Linux 3.0.0-15-server Mon Apr 9 14:34:48 2012
5 0 days, 09:40:52 | Linux 3.0.0-17-server Mon Apr 9 04:52:40 2012
To give a better impression of the kernel versions and number of
affected systems, I have put together some stats:
Kernel | max uptime | #hosts |
---------------------------------------------
2.6.32-31-server | 208 | 100++
2.6.32-39-server | 28 | >10
3.0.0-15-server | 70 | <50
3.0.0-17-server | 12 | <10
2.6.32-38-server | 48 | <50
2.6.32-40-server | 15 | >10
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https://bugs.launchpad.net/bugs/809313
Title:
mcelog errors and server freeze with qemu-kvm 0.12.3 and linux-
image-2.6.32-32-server
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