ml350 internal 72i scsi tape problem

[Andrea Rossi]

Hi all

I got a problem with an ML350G3 (2 processors, 2,5 GB ram, Redhat ES 2.1 kernel 2.4.9-e27, PSP 7).

performing a full backup of about 30GB I got this message (after about 1,5 hours)

kernel: scsi : aborting command due to timeout : pid 0, scsi1, channel 0, id 5, lun 0 Write (6) 00 00 28 00 00

three times, then system hang, so that I can't even reboot it.

internal scsi is seen as Adaptec AIC-7899 (driver aic7xxxx)
tape is a C7438A

Thanks a lot

[Mark Grant]

personally, I'd suspect the device or the cable. However, you might try the latest red hat kernel which may have an updated driver for the tape drive.

[Steven E. Protter]

causes in rough order of priority

1) Problem with drive.
2) problem with cable
3) problem with scsi termination
4) problem with scsi card.

You need to check all of these things with utilities or eyeballs.

SEP

[Dineshkumar Surpur]

The abort command here is due to the fact
that there was no reply from the device on
the status of write command and driver
has timed out on that write resulting in kernel panic. You can do the following

1. Try backup for a small GB and see if it
is successful
2. Update the tape device firmware and driver
update.

Most probably i feel its a device problem
rather then a termination or cable issue.

[Andrea Rossi]

they found out the jumpers on the tape were wrong.
Anyway after tape substitution the system hanged on Tuesday night, before the backup.
Tonight backup was successfull, dispite the fact I found "kernel: scsi : aborting command due to timeout" in /var/log/messages.

[Andrea Rossi]

the system hangs once a day!
what's happening?
the hardware test was successfull.

P.S. I found
mtrr: your CPUs had inconsistent fixed MTRR settings
mtrr: probably your BIOS does not setup all CPUs

in /var/log/messages.