Errors on QLogic 2200 w/ FC SAN

[Nick Triantos]

Hi all,

I'm seeing a huge number of errors in /var/log/messages of the form:

Jul 17 20:54:14 bsd kernel: (da2:isp0:0:0:2): SYNCHRONIZE CACHE. CDB:  
35 40 0 0 0 0 0 0 0 0
Jul 17 20:54:14 bsd kernel: (da2:isp0:0:0:2): CAM Status: SCSI Status  
Error
Jul 17 20:54:14 bsd kernel: (da2:isp0:0:0:2): SCSI Status: Check  
Condition
Jul 17 20:54:14 bsd kernel: (da2:isp0:0:0:2): ILLEGAL REQUEST asc:20,0
Jul 17 20:54:14 bsd kernel: (da2:isp0:0:0:2): Invalid command  
operation code
Jul 17 20:54:14 bsd kernel: (da2:isp0:0:0:2): Unretryable error

This is on FreeBSD 7.0 with a slightly trimmed down kernel.  I'm  
running both the 'isp' and 'ispfw' drivers.  I've got a QLogic QLA2200  
card with a StorCase (Kingston) S10K102 (12-disk SATA-to-FC) SAN  
device attached.

The second number of the "SYNCHRONIZE CACHE" line ('40' in the example  
above) changes between 0, 20, 40, and 60.  This occurs on all 5 disks  
currently installed in the StorCase device.  I'm using the device in  
NRAID (non-RAID) mode and then using FreeBSD's ZFS.

The device seems to be working very well, as far as I can tell the  
files are being written without error, but these messages are clogging  
up /var/log/messages to the point where I can't see if other stuff is  
going wrong.

Is there any straightforward way for me to fix the problem, or at  
least suppress these errors?  I would like to know if other major  
errors are occurring, but these just don't appear to be useful.

Any guidance welcome.

thanks in advance!

regards,
-Nick