I/O error, SCSI error, reservation conflict.... xfs suggestions?

Hello all-

I am in an fc6 x86_64 environment on an lvm2 ext3 fs (mkfs'd to a segate 750)... this is the host os. The target os is a CLFS environment, which is built on a areca 1280 hw raid6 (arcmsr driver compiled from source) 4 seagates (750s) array; all of the above on an AMD Opteron based tyan board.....

the target os has three primary partitions:

boot- xfs
swap- swap
lvm2

The lvm partition has one pv (being the areca array); the lvm has multiple lv's.... a few lv's are straight xfs, other lv's are
LUKS w/ the mapped drive being xfs.

I'v read the doc at: http://web.bii.a-star.edu.sg/~james/100TB/14TB/#f
...it's useful, but...

In the middle of read/write operations on the xfs formatted areca array I experience the following repetative message (from /var/log/messages):

sd 3:0:1:0: reservation conflict
sd 3:0:1:0: SCSI error: return code = 0x00070018
end_request: I/O error, dev sdx, sector 681896097

The "SCSI error: return code" consistently returns "0x00070018". The "end_request: I/O error, dev sdx, sector" returns various sector values. The opteron produces significant io wait during these errors; the read/write performance is marginal (in general).

I have run xfs_check on all the parititions (LUKS/xfs and xfs)... no errors. I have scanned the array volume (on the hardware level)... no
errors. I have run badblocks -nsv ...on most of the parititions (LUKS/xfs
and xfs)... no error.

Any and all thoughts/suggestions will be warmly received....

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...

Well, this isn't an xfs problem. Something is happening at the scsi layer, whatever xfs does after that is simply reacting (properly) to it.

I'd try another list... :)

-Eric

some other host has reserve (part) of your storage system, best you go whack them or something

low-level errors, not XFS