Networker

Re: [Networker] SCSI ID changing after rebooting the server

2008-05-21 11:44:45
Subject: Re: [Networker] SCSI ID changing after rebooting the server
From: Fazil Saiyed <Fazil.Saiyed AT ANIXTER DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Wed, 21 May 2008 10:39:39 -0500
Hello,
Have you compared the Bios settings for the HBA that works fine with the 
Emulex ? 



"Buerger, Andreas" <andreas.buerger AT WINCOR-NIXDORF DOT COM> 
Sent by: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
05/21/2008 10:29 AM
Please respond to
EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>; Please respond 
to
"Buerger, Andreas" <andreas.buerger AT WINCOR-NIXDORF DOT COM>


To
NETWORKER AT LISTSERV.TEMPLE DOT EDU
cc

Subject
Re: [Networker] SCSI ID changing after rebooting the server






Hi,

That's what i was always looking for. I've never seen a real reason behind 
a fix scsi id in the control port configuration.

The strange thing on this issue is, that we have several smaller 
configurations with same san switches and librarys but different hba 
vendors.
I've only seen this effect in a configuration with emulex hbas. The server 
OS and firmware of all other components is the same.
May be just an accident.

I will also have a look at the firmware of the used drives, the effort on 
the server wouldn'nt be necessary, if there a chance to set up a binding 
on the drive itself.

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On 
Behalf Of Terry Lemons
Sent: Tuesday, May 20, 2008 6:44 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] SCSI ID changing after rebooting the server

Hi

NetWorker for Linux V7.4 SP2 supports the optional use of the 
persistently-named symbolic names created automatically by udev in several 
popular Linux distributions.  Here's an excerpt from the NetWorker V7.4 
SP2 Release Notes (available at http://powerlink.emc.com in the "Home > 
Support > Technical Documentation and Advisories > Software ~ J-O ~ 
Documentation > NetWorker > NetWorker for Linux > 7.4 & Service Packs" 
section):

"New media library attribute and addition to the device configuration 
wizard

A new attribute, Use Persistent Names, has been added to the General tab 
of the
Storage Node resource for NetWorker release 7.4 Service Pack 2. When this
attribute is selected, configuration of a tape library (by using 
autoconfiguration
from NMC) on a Linux host attempts to use the symbolic name for media 
library
control ports and devices controlled by udev on Linux. When using the 
device
configuration wizard, you can also select this option during 
autoconfiguration of
devices."

Note that this feature is available ONLY for NetWorker for Linux storage 
nodes.

This feature is also available as a patch for NetWorker V7.4 SP1, at 
ftp://ftp.legato.com/pub/NetWorker/Updates/LGTsc10889/.  The README file 
in this directory documents the location and format of the 
persistently-named symbolic links supported by NetWorker:

"Device name formats 

The NetWorker software can identify the following Linux device name 
formats:

* /dev/nst* and /dev/sg*
* /dev/tape/by-id/<tape-identifier-string>-nst 
* /dev/tape/by-id/<changer-identifier-string>-generic 
* /dev/tape/by-id/scsi-<changer-identifier-string> 
* /dev/generic/by-id/<changer-identifier-string>-generic 
* /dev/generic/by-id/scsi-<changer-identifier-string>"

tl

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On 
Behalf Of Buerger, Andreas
Sent: Tuesday, May 20, 2008 11:47 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] SCSI ID changing after rebooting the server

I had the same issue on Linux (SLES 9 SP3) with NetWorker 7.3.
The problem is that the scsi controlport in the nsr jukebox has to be
set to a scsi id and not a to device name.
Therefore persistent naming/binding does not solve this problem, because
you're only able to set up persistent device names
and not the uniq scsi id, bus - target - lun.
Honestly I didn't solve the problem on itself, I've written a script
that configures the controlport attribute according to the active id of
the autochanger. Additionaly it is necessary to setup persistent
naming/bindung for your devices. This works but I'm not very happy with
it...

I would be very interested in some hints or meanings about this issue!

Cheers

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of Catalin Scarlet
Sent: Tuesday, May 20, 2008 4:32 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] SCSI ID changing after rebooting the server

Try to use persistent binding for your HBA.
This errors happened mostly on Windows

Catalin Scarlet
Senior Technical Engineer
STAR STORAGE

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of psherigar
Sent: 20 mai 2008 06:01
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] SCSI ID changing after rebooting the server

We have a sun v480 server running legato networker backup and whenever
we reboot the server the scsi dev changes from [email protected] to
[email protected] this started a month back when the server started
rebooting randomly. The scsi dev is seen when we issue the inquire
command from legato. It has been working fine from past 3 years until
the recent abnormal reboots. If we run EMCGrab on the host it sets the
scsidev back to [email protected]

BEFORE REBOOT

[email protected]:STK     L700    0311|Autochanger (Jukebox)
                                           S/N: MPC51002464
                                           WWNN=500104F0006DADE2
                                           WWPN=500104F0006DB263
                                           PORT=00000001
[email protected]:HP      Ultrium 2-SCSI  K710|Tape, /dev/rmt/0cbn
                                           S/N: HU107417CR
                                           ATNN=HP      Ultrium 2-SCSI
HU107417CR
                                           WWNN=50060B0000361792
                                           WWPN=50060B0000361790
                                           PORT=00000001
[email protected]:HP      Ultrium 2-SCSI  K541|Tape, /dev/rmt/1cbn
                                           S/N: HUM4D00010
                                           ATNN=HP      Ultrium 2-SCSI
HUM4D00010
                                           WWNN=50060B000020597A
                                           WWPN=50060B0000205978
                                           PORT=00000001


AFTER REBOOT

[email protected]:STK     L700    0311|Autochanger (Jukebox)
                                           S/N: MPC51002464
                                           WWNN=500104F0006DADE2
                                           WWPN=500104F0006DB263
                                           PORT=00000001
[email protected]:HP      Ultrium 2-SCSI  K710|Tape, /dev/rmt/0cbn
                                           S/N: HU107417CR
                                           ATNN=HP      Ultrium 2-SCSI
HU107417CR
                                           WWNN=50060B0000361792
                                           WWPN=50060B0000361790
                                           PORT=00000001
[email protected]:HP      Ultrium 2-SCSI  K541|Tape, /dev/rmt/1cbn
                                           S/N: HUM4D00010
                                           ATNN=HP      Ultrium 2-SCSI
HUM4D00010
                                           WWNN=50060B000020597A
                                           WWPN=50060B0000205978
                                           PORT=00000001

Any one who might have faced a similar issue and resolved it can provide
some input on the same

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Sitz der Gesellschaft: Paderborn
Registergericht Paderborn HRB 3507
Geschäftsführer: Eckard Heidloff (Vorsitzender), Stefan Auerbach, Dr. 
Jürgen Wunram
Vorsitzender des Aufsichtsrats: Karl-Heinz Stiller
Steuernummer: 339/5884/0020 - Ust-ID Nr.: DE812927716 - WEEE-Reg.-Nr. 
DE44477193

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