I have a system with 24 drives in raidz2. When testing with bonnie++
it seemed to work fine (although I had to raise the arc_max to
prevent kernel panics). However, now we're copying data to it and
dmesg is showing many errors like:
mpt0: mpt_cam_event: 0x16
mpt0: request 0xff80005f3840:63495 timed out for ccb 0xff000988f800
(req-ccb 0xff000988f800)
mpt0: request 0xff80005f1f80:63496 timed out for ccb 0xff00098d0800
(req-ccb 0xff00098d0800)
mpt0: attempting to abort req 0xff80005f3840:63495 function 0
mpt0: request 0xff8000601ee0:63497 timed out for ccb 0xff011edaa800
(req-ccb 0xff011edaa800)
mpt0: request 0xff80005f4ec0:63498 timed out for ccb 0xff011eda5800
(req-ccb 0xff011eda5800)
mpt0: mpt_wait_req(1) timed out
mpt0: mpt_recover_commands: abort timed-out. Resetting controller
mpt0: mpt_cam_event: 0x0
mpt0: completing timedout/aborted req 0xff80005f3840:63495
mpt0: completing timedout/aborted req 0xff80005f1f80:63496
mpt0: completing timedout/aborted req 0xff8000601ee0:63497
mpt0: completing timedout/aborted req 0xff80005f4ec0:63498
followed by
(da0:mpt0:0:1:0): READ(10). CDB: 28 0 1 23 81 6f 0 0 2b 0
(da0:mpt0:0:1:0): CAM Status: SCSI Status Error
(da0:mpt0:0:1:0): SCSI Status: Check Condition
(da0:mpt0:0:1:0): UNIT ATTENTION asc:29,0
(da0:mpt0:0:1:0): Power on, reset, or bus device reset occurred
(da0:mpt0:0:1:0): Retrying Command (per Sense Data)
for every drive in the array. Additionally, zpool scrub says:
pool: backups
state: ONLINE
status: One or more devices has experienced an unrecoverable error. An
attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
using 'zpool clear' or replace the device with 'zpool replace'.
see: http://www.sun.com/msg/ZFS-8000-9P
scrub: resilver completed after 0h0m with 0 errors on Thu Jan 21 23:15:36 2010
I'm using 8.0-RELEASE-p2 on amd64. One other thing that changed
between testing with bonnie++ and now is that I used glabel to label
the drives before I put them in the raidz array.
There is no raid controller.
Is this something anyone has seen before? Googling around shows
some similar errors but no solutions.
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