Veritas-bu

[Veritas-bu] Scheduler stopped checking for one hour?

2002-05-01 10:37:43
Subject: [Veritas-bu] Scheduler stopped checking for one hour?
From: Max.Booth AT ubsw DOT com (Max.Booth AT ubsw DOT com)
Date: Wed, 1 May 2002 15:37:43 +0100
Gerrit,

If you create the following file:

/usr/openv/netbackup/bin/CLEAN_IN_BACKGROUND

this will enable jobs to schedule and run even when
the db clean is running.

Hope this helps.

Regards,

max

-----Original Message-----
From: Gerrit Bos [mailto:gbos AT uoguelph DOT ca]
Sent: 01 May 2002 15:11
To: NetBackup List
Subject: Re: [Veritas-bu] Scheduler stopped checking for one hour?


Thanks, Larry, Jagtar, Penelope, and Shahar for your input and thoughts;
hopefully I didn't miss anyone.  While an errant Daylight Saving Time
process sounded the most interesting, I think the root cause in our case is
the database cleaning which NetBackup does when there are no backup jobs
running.  An image DB cleaning started at 2:05 that same morning and a media
DB cleaning  at 2:27.  So ironically the fact that there was no activity for
a short while before an important class started, the jobs in that class was
delayed.  (Usually the admins of the machines in that class are concerned
about contention, now they have a problem which seems to trace back to lack
of contention. :-)

Since the cleaning does take a while, an hour in our case, I do wonder if it
is possible to set a "Don't clean the databases during this time" flag.
Thanks again....Gerrit

Gerrit Bos wrote:

> We had a complaint from one of the server admins that a backup which
> faithfully starts at or close to 2 AM didn't start until after 3 AM.
> Resources were available, in fact, the tape drive graph show a drop to
> only one in use.  Our wake-up interval is every 10 minutes, and like
> clockwork when there are active schedules, there are "find_work" entries
> in the bpsched log files.  Then last night, for one hour, there are no
> "find_work" entries.  A full set at 01:55, and another at 03:05, and
> none in between.  Is that evidence that the scheduler stopped checking
> for an hour?  If it is, can you think of any reason why the scheduler
> stopped checking for work for one hour last night?   Our environment is
> NB 3.2GA on Solaris 2.7.  Thanks in advance for any feedback....Gerrit
>
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu

_______________________________________________
Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu

Visit our website at http://www.ubswarburg.com

This message contains confidential information and is intended only 
for the individual named.  If you are not the named addressee you 
should not disseminate, distribute or copy this e-mail.  Please 
notify the sender immediately by e-mail if you have received this 
e-mail by mistake and delete this e-mail from your system.

E-mail transmission cannot be guaranteed to be secure or error-free 
as information could be intercepted, corrupted, lost, destroyed, 
arrive late or incomplete, or contain viruses.  The sender therefore 
does not accept liability for any errors or omissions in the contents 
of this message which arise as a result of e-mail transmission.  If 
verification is required please request a hard-copy version.  This 
message is provided for informational purposes and should not be 
construed as a solicitation or offer to buy or sell any securities or 
related financial instruments.


<Prev in Thread] Current Thread [Next in Thread>