Hi,

When the tru64 unix host lose the tapes, use cmds such 
emxmgr
hwmgr show scsi 
hwmgr show fibre
hwmgr view device

to see if devices are really gone.

Did you fill /etc/ddr.db (or using ddr_config)
to configure IBM LTO3 tape devices ?

When tapes are gone, try using cmds like
inquire 
hwmgr -scan scsi 
inquire

to rescan FC HBAs ...

Look also at HBA speed and hwmgr coutners (see hwmgr get attr ...)


HTH

Th

-----Message d'origine-----
De : EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] De 
la
part de Fazil Saiyed
Envoyé : lundi 24 novembre 2008 15:25
À : NETWORKER AT LISTSERV.TEMPLE DOT EDU
Objet : Re: [Networker] device disappearing on Tru64,

Hello,
One thing stands out of your email is " The connected disks through same 
HBA are working fine" is this type of configuration where you have zoned 
Tapes & HD on the same HBA supported by HBA vendor, could they step on 
each other ? When did you start noticing issues, any recent changes  ?
Is there a way within your  FC fabric to query the devices attached before 
& after the problem occurs to see what is happening, i would also record 
any networker cmd output such as inquire and any mounted disks\tapes on 
Tru64.
HTH



Mesut Mert <mesut.mert AT GMAIL DOT COM> 
Sent by: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
11/24/2008 06:44 AM
Please respond to
EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>; Please respond 
to
Mesut Mert <mesut.mert AT GMAIL DOT COM>


To
NETWORKER AT LISTSERV.TEMPLE DOT EDU
cc

Subject
device disappearing on Tru64,






Hi All,
We have i2000 with IBM LTO3 drives with 3 i/o blades. One of the blade is
dedicated for Tru64 5.1b-SP6 machine. We are facing a problem on
Tru64 storage node that one device randomly at a time disappearing from 
the
host side intermittently. Either waiting for a while or resetting the i/o
blade are our workarounds to bring the device back. We have a full backup 
at
weekend and it is about 1.2 TB. Whenever this problem happen, the backup
hangs because of the disappeared device. As the group timeout is 0, we can
see the hanged group even next day.

Other i/o blades with 8 drives are working perfectly without . Even Tru64
machines completed most of the backups successfully.

Networker Server 7.2.1 is running on Solaris 10 - Sunfire V890
Networker Client is 7.2.1 is running on Tru64 5.1b-SP6.

Quantum library firmware;
MCB 540A and IBM LTO3 73P5

Please note that there is no error message on /var/adm/messages on Tru64.
Moreover no error on i2000 library and SAN switch. We changed the zoning,
Quantum Lun Mapping and using other HBA, switch, path, but still facing 
same
problem. The connected disks through same HBA are working fine. Only tapes
are disappearing intermittently.

Any idea?

Thanks & regards,
Mesut

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