I got the same error message about every ten seconds when I was creating my
sw-raid5 array (mdadm --create) ontop of four luks-crypted disks, which give
heavy I/O in common.
And the errors showed up again when I was writing fast onto the array ("dd
if=/dev/zero of=/dev/md0" @ ~50MB/s), but I didn't got any errors when I was
reading fast ("dd if=/dev/md0 of=/dev/null" @ ~60MB/s) or when I was writing
slow onto it (400GB data @ ~8MB/s from 100MBit/s NFS-mount).
# uname -a
Linux localhost 2.6.20-16-server #2 SMP Wed May 23 00:36:09 UTC 2007 x86_64
GNU/Linux
My CPU is an AMD X2 3800+ (Dual core)
Just tell me what commands I should run to give you more info, and I'll post
the results here.
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Kernel soft lockup detected on CPU#0 under heavy I/O on AMD64 Feisty, elevator.c
https://bugs.launchpad.net/bugs/118833
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