On Sun, 2009-12-13 at 12:58 +0200, Uprooter wrote: > Hello James and thanks for trying to help. > > Unfortunately changing min_period didn't solve anything. > # pwd > /sys/class/spi_transport/target2:0:1 > > localhost target2:0:1 # echo 25 > min_period > localhost target2:0:1 # echo 1 > revalidate > I did it for both disks. > #dmesg | tail -10 > target2:0:0: Beginning Domain Validation > target2:0:0: Domain Validation skipping write tests > target2:0:0: Ending Domain Validation > target2:0:0: Beginning Domain Validation > target2:0:0: Domain Validation skipping write tests > target2:0:0: Ending Domain Validation > target2:0:1: Beginning Domain Validation > target2:0:1: Domain Validation skipping write tests > target2:0:1: Ending Domain Validation > target2:0:1: Beginning Domain Validation > target2:0:1: Domain Validation skipping write tests > target2:0:1: Ending Domain Validation > > # cat min_period > 25 > # cat period > 50 OK, so I'd suspect a cabling problem. 50ns is the minimum period for a single ended bus. You have to move to LVD to get anything beyond. I'd say something in your SCSI cable chain is keeping the bus SE. James -- 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
