Hi there! Just for completeness: It seems my problem was caused by a very old firmware on the recently bought new HBA. It's a bit inconsistent but the firmware is told in hex under proc: monosan:~ # cat /proc/mpt/summary ioc0: LSISAS1068 B1, FwRev=01180100h, Ports=1, MaxQ=366, IRQ=4347 and in dec on the website: SAS3801X FW:1.24.01 BIOS:6.20.00 10-DEC-07 The problem hasn't occured since 4 days now. I hope the best. Regards Lars -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html