Here's the process if you haven't had the chance to look at the Legato
KB.
I have this handy since I had to perform this recently. This one is for
Windows. The make the appropriate changes for UNIX systems.
Thanks,
Paul C.
========================================================================
==
Fix These are steps to perform that will identify and/or fix
'corruption' within a media database, if it does in fact exist.
Make sure you have a bootstrap backup before commencing.
First, check the file system to make sure that it is 'sane' before
performing the media scavenging procedure. For example, in UNIX use
fsck.
Step 1) Stop NetWorker services (NetWorker Backup and Recovery Server,
then NetWorker Remote Exec Service)
Step 2) Delete \nsr\mm\cmprssd
Step 3) Restart NetWorker services
Step 4) Run nsrim -X
Step 5) Stop NetWorker services
Step 6) In \nsr\mm\mmvolume6 delete all files except the following:
vol.0, ss.0, clients.0, vol.1, ss.1, clients.1, vol.2, ss.2, clients.2,
vol.3, ss.3, clients.3, etc.
Step 7) Empty the files in the \nsr\tmp directory Step 8) Start
NetWorker Remote Exec Service, then NetWorker Backup and Recovery
Services
NOTES:
Step 2 is to force NetWorker to compress the media db, by removing the
/nsr/mm/cmprssd file. Restarting the daemons will compress the media db.
Step 4 will consistency check the data structures of the save sets with
the data structures of the volume.
Step 6 is simply a way to force NetWorker to rebuild the media db. The
files that are deleted are all rebuildable from the 'main' media db
file. By deleting all the 'keys', they will be rebuilt next time around.
NOTE: be careful when deleting the files and make sure not to delete the
files (vol.0, ss.0, clients.0, vol.1, ss.1, clients.1, vol.2, ss.2,
clients.2, etc.). These files are needed to rebuild the media database.
-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTMAIL.TEMPLE DOT EDU]
On Behalf Of Tim Mooney
Sent: Sunday, June 13, 2004 11:10 PM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: Re: [Networker] Scavenge the media database
In regard to: Re: [Networker] Scavenge the media database, Darren
Dunham...:
>>
>> How do I scavenge the media database.
>
> What do you mean by that?
He means that he's getting an error message from NetWorker that says
that the media database must be scavenged. It's an error message that
comes out of NetWorker when you have database corruption.
I've seen this error message myself, there is a Legato Technical
Bulletin
on it and related errors and how to correct the problem.
> You can query the database with 'mminfo'.
> You can recover from a corrupted media database with 'mmrecov'.
>
> The only place I see "scavenge" in the documentation is referring to
> some synchronization beteen nsrck and nsrindexd, which shouldn't have
> anything to do with the media database.
$strings /usr/sbin/nsrmmdbd | egrep -i scavenge
media db must be scavenged
media db scavenge failed
media db scavenge successful
Cannot scavenge record file %s within database %s
Cannot scavenge %s (%s) - recover from backup media
Tim
--
Tim Mooney mooney AT dogbert.cc.ndsu.NoDak DOT edu
Information Technology Services (701) 231-1076 (Voice)
Room 242-J6, IACC Building (701) 231-8541 (Fax)
North Dakota State University, Fargo, ND 58105-5164
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