sym0: SCSI parity error detected: SCR1=1 DBC=11000036 SBCL=ae

This happened today:

Nov 15 21:28:36 knew kernel: sym0: SCSI parity error detected: SCR1=1 DBC=11000036 SBCL=ae
Nov 15 21:28:49 knew last message repeated 1611 times
Nov 15 21:28:49 knew sudo:      dan : TTY=pts/0 ; PWD=/usr/home/dan ; USER=root ; COMMAND=/sbin/camcontrol rescan all
Nov 15 21:28:49 knew kernel: sym0: SCSI parity error detected: SCR1=1 DBC=11000036 SBCL=ae
Nov 15 21:28:52 knew last message repeated 374 times
Nov 15 21:28:52 knew kernel: sym0: SCSI parity error detected: SCR1=1 DBC=11000036 SBCL=ae
Nov 15 21:28:54 knew last message repeated 249 times
Nov 15 21:28:54 knew kernel: sym0: SCSI parity error detected: SCR1=1 DBC=11000036 SBCL=ae
Nov 15 21:28:54 knew last message repeated 8 times
Nov 15 21:28:54 knew kernel: sym0: SCSI parity error detected: SCR1=1 DBC=11000036 SBCL=ae
Nov 15 21:29:09 knew last message repeated 1965 times
Nov 15 21:29:10 knew kernel: sym0: SCSI parity error detected: SCR1=1 DBC=11000036 SBCL=ae
Nov 15 21:29:10 knew last message repeated 124 times
Nov 15 21:29:11 knew kernel: sym0: SCSI parity error detected: SCR1=1 DBC=11000036 SBCL=ae
Nov 15 21:29:11 knew last message repeated 11 times
Nov 15 21:29:11 knew kernel: sym0: SCSI parity error detected: SCR1=1 DBC=11000036 SBCL=ae
Nov 15 21:29:17 knew last message repeated 862 times
Nov 15 21:29:18 knew kernel: sym0: SCSI parity error detected: SCR1=1 DBC=11000036 SBCL=ae
Nov 15 21:29:18 knew last message repeated 18 times
Nov 15 21:29:18 knew kernel: sym0: SCSI parity error detected: SCR1=1 DBC=11000036 SBCL=ae
Nov 15 21:29:26 knew last message repeated 1003 times
Nov 15 21:29:26 knew kernel: sym0: SCSI parity error detected: SCR1=1 DBC=11000036 SBCL=ae
Nov 15 21:29:26 knew last message repeated 7 times
Nov 15 21:29:26 knew kernel: sym0: SCSI parity error detected: SCR1=1 DBC=11000036 SBCL=ae
Nov 15 21:29:57 knew last message repeated 3844 times
Nov 15 21:29:59 knew last message repeated 324 times
Nov 15 21:29:59 knew kernel: (noperiph:sym0:0:-1:-1): SCSI BUS reset detected.

I power cycled the tape library. No change.

I also did a camcontrol rescan all. No change.

Then I rebooted the system. Things went back to normal. I hope I don’t have to do this often.