Veritas-bu

[Veritas-bu] Three minutes, then the restore dies (positionin g timeout??)

2003-08-13 11:52:58
Subject: [Veritas-bu] Three minutes, then the restore dies (positionin g timeout??)
From: Mark.Donaldson AT experianems DOT com (Donaldson, Mark)
Date: Wed, 13 Aug 2003 09:52:58 -0600
I didn't think the two were related - especially in this case since data has
yet to flow but I set them the same anyway (hard-linked, actually).

The image I need restored failed to duplicated.  I'm trying a bpverify on it
right now instead.  I may just have a bad spot of tape.  It's not looking
good for the requestor...

-M

-----Original Message-----
From: Johan Redelinghuys [mailto:jredelinghuys AT stortech.co DOT za]
Sent: Wednesday, August 13, 2003 1:45 AM
To: Donaldson, Mark; Veritasbu (E-mail)
Subject: RE: [Veritas-bu] Three minutes, then the restore dies
(positioning timeout??)


Hi

Do you use SIZE_DATA_BUFFERS & NUMBER_DATA_BUFFERS? If you do, make sure
that you add (if it is not there), NUMBER_DATA_BUFFERS_RESTORE. This file's
value (eg 32 or 64) must be the same value as NUMBER_DATA_BUFFERS. Try this
and let us know if this helped.

JR

-----Original Message-----
From: Donaldson, Mark [mailto:Mark.Donaldson AT experianems DOT com]
Sent: 12 August 2003 19:59
To: 'Johnny Oestergaard'; Donaldson, Mark; Veritasbu (E-mail)
Subject: RE: [Veritas-bu] Three minutes, then the restore dies
(positioning timeout??)


These are LTO Ultrium drives.  It's the same tape drive each time but a
different drive with each attempt I'm making now.

My next idea is to try to duplicate the tape, using a different media
server, & then try to restore from the duplicate.

The precise three minute apparent (?) timeout on positioning is what makes
this suspicious.  If it were 3:39, then I'd suspect the tape itself more.

-M

-----Original Message-----
From: Johnny Oestergaard [mailto:johnny AT joe DOT net]
Sent: Tuesday, August 12, 2003 11:51 AM
To: Donaldson, Mark; Veritasbu (E-mail)
Subject: Re: [Veritas-bu] Three minutes, then the restore dies
(positioning timeout??)


Is it on the same tape each time?
Is it on the same tapedrive each time?

The only time I have seen media positioning errors in our installations is 
has been due to tape errors.
But sometimes it helped just to load the tape on a different drive.

I have only had the problem on backups (thank God never on restores)

What tapedrives do you use?

/johnny

At 10:56 12-08-2003 -0600, Donaldson, Mark wrote:
>I'm having trouble with a restore.  It seems to be timing out on media
>positioning after exactly three minutes.  Here's the top of the logfile:
>
>   Restore started 08/12/2003 11:38:14
>   11:38:17 (99312.xxx) Restore job id 99312 will require 1 image.
>   11:38:17 (99312.xxx) Media id C00194 is needed for the restore.
>   11:38:20 (99312.001) Restoring from image created Fri Jul 25 13:55:39
2003
>   11:38:22 (99312.001) INF - Waiting for mount of media id CG0194 on
server
>XXX.
>   11:39:04 (99312.001) INF - Waiting for positioning of media id CG0194 on
>server XXX.
>   11:42:04 (99312.001) The following files/folders were not restored:
>   <snip filelist>
>   11:42:09 (99312.001) Status of restore from image created Fri Jul 25
>13:55:39 2003 = media position error
>   11:42:10 (99312.xxx) INF - Status = the restore failed to recover the
>requested files.
>
>If you notice, the time between the positioning start & the failure
>notification is precisely three minutes.  Four attempts, each fails at the
>three-minute mark.
>
>The MEDIA_MOUNT_TIMEOUT, according to the Sysadmin Guide, is supposed to
>control this timing (load plus positioning combined) and I have it set for
>7200 seconds (2 hours) in the master server's bp.conf file.
>
>   > bpconfig -U
>   <snip>
>   Media Mount Timeout:          120 minutes
>   Shared Media Mount Timeout:   120 minutes
>   <snip>
>
>This is v4.5 MP4 on Sol 8.  The client for the restore job is one of four
>media servers (counting the master=media).
>
>Any ideas?
>
>-M
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