What do your logs say?   

-----Original Message-----
From: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Dave
Markham
Sent: Monday, November 06, 2006 10:46 AM
To: Sebastian Schoenwetter
Cc: veritas-bu at mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] How to get SSO SAN Media Server LTO Drives
back *without* rebooting ?

Wasnt there something in the MediaMgr_DeviceConfig_Guilde in
/usr/openv/volmgr about a system low on resaources may occasionally
unload the st and sg drivers?

If unix i think you can put forceload: drv/st   and forceload: drv/sg
into /etc/system on separate lines.

Just a thought

Sebastian Schoenwetter wrote:
> Tell us something about your SAN ...
>
> Are you in a fabric environment, or a loop environment ?  Are the 
> drives fabric enabled drives in Point-to-point mode or are they Public

> loops attached to your fabric (if you have one) ?
>
> If you are in loop mode, a LIP (loop initialization) or target reset 
> might cause your drives to get a new ALPA (= address on the loop) 
> effectively preventing your host from talking to the drive.
>
> Do you use persistent binding  ?
>
> Bye
> seb
>
> Quoting "Wilkinson, Alex" <alex.wilkinson at dsto.defence.gov.au>:
>
>   
>> Hi all,
>>
>> We are consistently having to reboot our servers (both windows and
>> unix) to get
>> our LTO3 SSO drives back (after they mysteriously disappear).
>>
>> Scenario:
>>
>> For one reason or another we loose a drive and to get it back for 
>> example we powercycle our library and our NB master can now see the 
>> drive(s), however, our SAN Media servers cannot see the drives unless

>> we reboot them. This is *bad* - _really_ bad. These are production 
>> servers and cannot be rebooted on a whim.
>>
>> So the question:
>> =-=-=-=-=-=-=-=
>>
>> Can anyone recommend how to get SAN Media Servers to see their SSO 
>> drives again
>> *without* having to reboot ?
>>
>> We are running NB-6.0-MP3 both Solaris and Windows 2003 Masters.
>>
>> Regards
>>
>> -aW
>>
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>>
>>
>>
>>     
>
>
>
>   

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