Jeff Lessem wrote:

Dan Williams wrote:

quoted

The following patch, also attached, cleans up cases where the code 

looks

quoted

at sh->ops.pending when it should be looking at the consistent
stack-based snapshot of the operations flags.

I tried this patch (against a stock 2.6.23), and it did not work for
me.  Not only did I/O to the effected RAID5 & XFS partition stop, but
also I/O to all other disks.  I was not able to capture any debugging
information, but I should be able to do that tomorrow when I can hook
a serial console to the machine.

That can't be good! This is worrisome because Joel is giddy with joy 
because it fixes his iSCSI problems. I was going to try it with nbd, but 
perhaps I'll wait a week or so and see if others have more information. 
Applying patches before a holiday weekend is a good way to avoid time 
off. :-(

I'm not sure if my problem is identical to these others, as mine only
seems to manifest with RAID5+XFS.  The RAID rebuilds with no problem,
and I've not had any problems with RAID5+ext3.

Hopefully it's not the raid which is the issue.

-- 
bill davidsen [off-list ref]
  CTO TMR Associates, Inc
  Doing interesting things with small computers since 1979