Veritas-bu

Re: [Veritas-bu] Media Server offline for disk

2009-07-16 09:10:29
Subject: Re: [Veritas-bu] Media Server offline for disk
From: Girish Jorapurkar <girishsj AT yahoo DOT com>
To: WALLEBROEK Bart <Bart.WALLEBROEK AT swift DOT com>, "Martin, Jonathan" <JMARTI05 AT intersil DOT com>, "veritas-bu AT mailman.eng.auburn DOT edu" <veritas-bu AT mailman.eng.auburn DOT edu>
Date: Thu, 16 Jul 2009 06:07:20 -0700 (PDT)
There you go - setting a lower value to RE_READ_INTERVAL, I belive, is the 
problem. NetBackup will mark a media server "offline for disk" if does not 
receive heartbeat in 30 seconds, in your case. And, that applies to all media 
servers - which can be hard to meet in a very busy system/time. So, I suggest 
that you revert RE_READ_INTERVAL to default (5 mins = 300 seconds)

To address your original concern, you should be able to change/configure 
high-water mark (upper threshold) for a BasicDisk STU using GUI/CLI.

/Girish


----- Original Message ----
From: WALLEBROEK Bart <Bart.WALLEBROEK AT swift DOT com>
To: Girish Jorapurkar <girishsj AT yahoo DOT com>; "Martin, Jonathan" <JMARTI05 
AT intersil DOT com>; "veritas-bu AT mailman.eng.auburn DOT edu" <veritas-bu AT 
mailman.eng.auburn DOT edu>
Sent: Thursday, July 16, 2009 1:49:54 AM
Subject: RE: [Veritas-bu] Media Server offline for disk

Girish,

I already changed this parameter.  I did not put in a higher value but a lower 
value (30 seconds) as I believed it was because of the fact that the Media 
Server did not cleaned up the staging disk fast enough so that the disk becomes 
full and the Media Server for Disk was set offline.  The upper threshold is 
apparently hardcoded to 98% for Basic Disk (which is, in my mind, ridiculous) 
so it has very little time to start cleaning up when backups are coming in at a 
rate of almost 100 MB/sec).  But this did not solve the issue.  We are 
suspecting something else right now.

Best Regards,
Bart WALLEBROEK
Backup admin
Enterprise Applications Delivery - Infrastructure Management
S.W.I.F.T. SCRL

>-----Original Message-----
>From: Girish Jorapurkar [mailto:girishsj AT yahoo DOT com]
>Sent: Wednesday, July 15, 2009 4:11 PM
>To: WALLEBROEK Bart; Martin, Jonathan; veritas-bu AT mailman.eng.auburn DOT edu
>Subject: Re: [Veritas-bu] Media Server offline for disk
>
>
>In 6.5/6.5.x, a service (nbrmms) running on all master/media servers sends a 
>heartbeat/capacity-update regarding
>disk storage units on the server. If the master server service (nbemm), for 
>some reason, does not receive the
>heartbeat/update in the required time interval, then NetBackup marks the 
>server "offline for disk". There may be
>some valid reasons (load on master/media server) that the heartbeat/update has 
>not been delievered in time. It is
>possible to configure the heartbeat/update interval - which applies to ALL 
>media servers.
>
>GUI: Host Properties -> Master server -> General Server properties -> Check 
>capacity of disk storage units (interval
>in seconds)
>bp.conf: RE_READ_INTERVAL = <seconds>
>
>Remember that setting this value too high might lead to NetBackup trying to 
>run (and failing) backups on media
>servers that are really really "offline".
>
>Hope this helps,
>/Girish
>



      
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