Re: Bug in aic94xx driver in 2.6.25-rc3

[James Bottomley <James.Bottomley@HansenPartnership.com>]

On Wed, 2008-02-27 at 14:39 -0800, peter wrote:
> My original post was user error and not acutally a bug.  I didn't
> realize that there was another patch I need to apply to rc3 to get the
> latest scsi drivers and error handler code.  Alexis clued me in.  Now
> the error handler appears to be working properly.  I included a sample
> at the bottom of this email.  
> 
> I am still seeing the disk go offline if I run i/o performance tests on
> sas disks connected to the aic94xx (sequencer version 32).  It doesn't
> happen right away.  The i/o tests will run for several hours before it
> fails.  Eventually you see the filesystem abort and then be remounted as
> read only.

Yes, I've seen this one too.  in my case it's caused by error handling
tripping a flutter on the disk phy, so the HBA actually sees an
unplug/replug event, but that causes the disk to go offline (even though
it actually reappears almost immediately).  I have that on my list of
things to fix ... probably by stealing the devloss tmo from fc.

James