DDS + Legato 7.1.3 + SAN = bus reset issues

[Persevalli]

All,

I would like to know if somebody have similar configuration or experienced similar problem:

Configuration:
- Legato Version: 7.1.3
- Library: HP 16 Drives LTO II
- Operating System: Tru64 v5.1B (Cluster v5)
- SAN: Brocade SAN Switches 16 Ports x 2 Gb
- Zoning: Hardware Enforced
- Bridges: NSR e2400 (x 4)
- Quant. of Hosts sharing the Library: 5

Problem Description:

-> During the backup , sometimes the Legato presents the following error on drives:

"05/03/04 08:04:40 nsrd: Jukebox 'rd=srlac051:ESLAC002' failed: expected volume 'L20128' got 'NULL'."



-> The Tru64 tool "EVM" collects the following data:

"03-May-2004 10:14:10 Media may have been changed or device was reset (HWID=18446 744073709551589 lid=109 btl=13/0/0)"

"03-May-2004 10:47:26 Media may have been changed or device was reset (HWID=18446 744073709551609 lid=96 btl=11/0/3)"


Ps: No "fabric changes" happening during the Backup.

Thank you.

Persevalli

 

[jvmv]

Hi,

I' ve a similar problem with a similar configuration.

Configuration:

Legato Version: 7.1.1
Library: StorageTek 12 Drives LTO II
Operating System: Windows 2000
SAN: Brocade SAN Switches 32 Ports x 2 Gb
Zoning: Hardware Enforced
Quant. of Hosts sharing the Library: 16

Problem description:

During the backup, sometimes the Legato presents the same error:
Jukebox 'STK-L700e' failed: expected volume '000042' got 'NULL'

But the main problem is in the restore and the scanner.

When I restore sometimes the Legato presents the following error:

can not read record 30979 of file 33 on LTO Ultrium-2 tape 000399.

And the restore fail.


In the scanner, when I run the command: scanner -f 4 -mv \\.\Tape0, the command scanner cannot read the label of the tape and it cannot be positioned in the file 4, it is positioned in file 130.

C:\>scanner -f 4 -mv \\.\Tape0
scanner: \\.\Tape0: opened for reading
scanner: \\.\Tape0: rewinding
scanner: Reading the label...
scanner: Reading the label done
scanner: SYSTEM error: Tape label read for volume ? in pool ?, is not recognised
by Networker: Hay más datos disponibles.
scanner: SYSTEM error: Tape label read for volume ? in pool ?, is not recognised
by Networker: Hay más datos disponibles.
scanner: scanning for valid records...
scanner: read: 65536 bytes
scanner: read: 65536 bytes
scanner: Found valid record:
scanner: volume id 1602174808
scanner: file number 126
scanner: record number 4731
scanner: volume name `000230'
scanner: scanning LTO Ultrium-2 tape 000230 on \\.\Tape0
scanner: volume id 1602174808 record size 65536
created 4/16/04 2:07:39 expires 4/16/06 2:07:39
scanner: LTO Ultrium-2 tape 000230 already exists in the media index
scanner: setting position from fn 0, rn 0 to fn 2, rn 0
scanner: unexpected file number, wanted 2 got 128
scanner: adjusting file number from 2 to 128
scanner: scanning file 128, record 0


Have you the same problems?

Thank you.

 

[Persevalli]

Jvmv,

Actually this is a very recent configuration and I didn´t
execute any scanner yet. I´ll try and answer your question in near future.

Thanks for the answer.

Kind regards,
Persevalli

 

[speedyx]

Hi Admins
We have the same troubles, but now it works fine!

the only thing we changed was the scsi-to-fibre Bridge (chapperall to hp nsr). but attention... you MUST fix the tape-drives to a port of your fibre-bridge otherway after each scsi-reset (unix need this) you have maybe a other path to your physicale tape (sorry my english, im swiss
). I hope you understand what i mean...

first:
fix the path tape-to-bridgeport
second:
adjust via jbconfig the correct path from your dds-mapping

kind regard

roger