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Let me second the notion that this might be a scsi issue. Cabling is
possible.
Also, how many drives are on a single scsi chain? Is this something
that just started
out of the blue after a long period of no problem?
The randomness of this always complicates diagnosis. Examining log
file entries,
might show that it's less random than you think.
Matt Temple
Ronny Egner wrote:
> Luiz Casey schrieb:
>> We have been having several problems with 7.2. running on Solaris
>> 10. Currently we have 3 drives in service mode. We ran an nsrjb
>> -HHE on them to clear them out and renabled them. It then
>> attempted to mount a new tape for labeling, an old tape for
>> appending, and a recyclable tape for re-labeling. All three of
>> these operations resulted in I/O errors. Much of what we saw
>> earlier. We had a hardware tech come out a couple days ago and
>> tell us it was a "leader" problem. He reset the leader on the
>> drives and told us it was caused my bad tapes. Could this be more
>> of the same "leader" problem we were having ?? We also have had
>> problems where it would finish writing the tapes and we would
>> have to manually unmount the tape. Also some tapes would get
>> stuck on "verifying the label" this happens on random drives and
>> random tapes. Just today a new tape got mounted for automatic
>> labeling and failed, so we reset_device and it re-ran the process
>> automatically and it worked.
>>
>> Any suggestions, ideas, comments would be great. Also let me know
>> if you need additional information.
>
> Hi,
>
> does your message log (i.e. /nsr/logs/daemon.log,
> /var/log/messages, /var/adm/syslog, and so on) show any errors ? If
> so, please post them.
>
> I little bit information about the connectivity Server <--> Library
> would be of great help. Anyway a lot of trouble with SCSI-attached
> libraries is caused by bad cabeling. Have you power cycled
> everything (i´ve seen many cases - especially with small libraries
> - where power cycling helped).
>
> At last i recommend updating to 7.2.2, but not to 7.3 :-)
>
- --
=============================================================
Matthew Temple Tel: 617/632-2597
Director, Research Computing Fax: 617/582-7820
Dana-Farber Cancer Institute mht AT research.dfci.harvard DOT edu
44 Binney Street, LG300/300 http://research.dfci.harvard.edu
Boston, MA 02115 Choice is the Choice!
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