SCSI error in syslog

[kholikt]

I am getting some strange error in my syslog

SCSI: Resetting SCSI -- lbolt: 117604023, bus: 0
SCSI: Reset detected -- lbolt: 117604023, bus: 0
scb->cdb: 12 00 00 00 80 00

I clean my tape drive it seems to okay again. An ioscan always doesn't provide any good unclaimed device

[T G Manikandan · Accepted solution]

The messages are the SCSI reset due to a device which is not responding to the specific timeout period.

The system would reset the SCSI bus and try again and again.

check for the SCSI connections.

//
Just check whether you have proper termination.
//

Do you have any extra messages in the /var/adm/syslog/syslog.log file.

Ioscan will request information from each device.
Does your ioscan hang for some time?

check for all messages in syslog.


Thanks

[albert_hua]

Hi,kholikt:
I have encountered the same question before.
TGM is right, the SCSI reset due to a device which is not responding to the specific timeout period.
At first, I suspected the termination and then changed it but it didn't work so I suspected the SCSI cable so that I changed the cable then the question was solved.

Thanks.

Al.

[Jerry Jaynes]

I'm going to play Karnac here.


You have an Ultrium LTO?
Random failures with errors like "Error while writing to data record XXXX"

The SCB error is a scsi bus timing error. There is a problem with the ultriums, that they have a bug in the SCSI controller chip.

They have a little utility to tell them if you have the "SELWAY" chip. If you do, they will replace the tape drive.

Good Luck!

Jerry Jaynes