On 08/04/13 15:18, Chris Dunlop wrote:
G'day,
On a LSI 9211-8i controller with IT firmware, when I use mdadm
to create a 4-disk raid10 and mount it, the controller reports
errors on all 4 disks, then the disks go read-only (kern.log
below).
A raid6 using the same sets of disks works without any problems.
Has anyone had any success or similar failures with similar
hardware, and/or have any idea what might be going on?
I have a 4 drive RAID10 and a 10 drive RAID6 spread across three of
these controllers (plus a couple of extra drives). I always run the
latest stable kernel where x.x.y y >= 2 so I can't give you any details
on old kernels. I'm using LSI firmware 15, but I only upgraded that last
time I rebooted, so 14 was ok on 3.7.2 and earlier for a while.
I'm currently on 3.7.9 (have not rebooted since it was upgraded).
I do hammer the living daylights out of the RAID10 (it has 4 15K SAS
drives).
Apr 8 15:08:53 b4 kernel: [ 448.657142] md4: WRITE SAME failed.
Manually zeroing.
That indicates that the driver is trying to send DISCARD down to the
drives, which if they are rotating media would be why they are
complaining loudly.
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