Veritas-bu

Re: [Veritas-bu] Slow catalog backup

2007-06-11 04:27:56
Subject: Re: [Veritas-bu] Slow catalog backup
From: "Clooney, David" <david.clooney AT bankofamerica DOT com>
To: "Conner, Neil" <neil AT mbari DOT org>, VERITAS-BU AT mailman.eng.auburn DOT edu
Date: Mon, 11 Jun 2007 09:08:02 +0100
Neil,

Unfortunately not, Symantec have tried too to analyze the scenario to no
avail.

What I have decided to do is move away from NBU catalog backups and use
rsync to keep copies of our catalog somewhere else on the SAN. This way
we don't have to wait for catalog backups to finish etc as 5.1.

This way we will always have an up to date copy.

Sorry I couldn't help, just add when using  OS tar to tape took ages
pointing in the direction of the OS once again. We just don't have the
time investigate further.

Regards

Dave

-----Original Message-----
From: Conner, Neil [mailto:neil AT mbari DOT org] 
Sent: 06 June 2007 19:06
To: Clooney, David; VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Slow catalog backup

Dave,

Did you ever find a solution to this?  I'm considering migrating my
catalogs onto a fiber SAN...

Thanks,
Neil


-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Clooney,
David
Sent: Friday, June 01, 2007 4:34 AM
To: VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Slow catalog backup

Hi All

Scenario

Master server Solaris 8 64 bit

We recently moved out catalog from local disk to SAN attached LUN, since
then the catalog backup is taking hours compared to what is used to.

We decided to take a copy of the catalog within a NBU policy to see the
results, as this would make full use of bptm and use the NBU buffer
setting config. The backup flew through fine confirming our SAN
infrastructure is sound.

I have tailed the bpbkar log when a catalog is running and it literally
chugs along, it seems as though the buffer it is filling is tiny as the
amount of data before pausing is tiny.

Does anyone have any suggestions or could point me in the right
direction? I get the feeling that this might be OS related somewhere as
we have another identical production system that also had its catalog
moved to a LUN and we have no issues what so ever with it?

Thanks

Dave



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