do you have fragment size set on your storage units to something other than 
default?


Dean wrote:
> I am sitting here at home on a Friday night watching the backups run
> (yeah, I have no life), trying to get an idea about how the
> performance is going, and trying to help a DBA narrow down a
> performance problem. I have 3 backups running at the moment (things
> haven't really kicked off yet). Everything was going fine - I was
> seeing 60 MB/sec from the main client I am interested in, and about 20
> MB/sec from the other two, which is all good.
> 
> Then suddenly everything freezes. It has been about half an hour and
> nothing has happened.
> 
> The only error message I see is this one....
> 
> 1224235829 1 2 16 melrhnbu02 0 0 0 *NULL* bptm Error occurred during
> initialization.  Could not read logging configuration file.
> 
> (that is from a media server which is not involved in the particular
> backup I am intersted in, so is probably completely irrelevant)
> 
> I also get lots of this :
> bpcd/log.101708:07:43:53.526 [4941] <16> bpcd main: char_count = 7375,
> .line_count = 55
> bpcd/log.101708:07:43:57.112 [4954] <16> bpcd main: strlen(pProcList) = 7205
> 
> GRRRR
> 
> It;s extremely frustrating having watched a 100GB filesystem backup
> tick up to about 90GB completed at 60 MB/sec, then everything freezes,
> when I have a DBA waiting for me to tell him that everything looks OK
> from the I/O side of things on his server. But I can't give him a
> definitive answer, because EVERYTHING has locked up for me, from all 3
> clients that are trying to backup at the moment.
> 
> Oh NetBackup, why must thou smite me?
> 
> Well, I was just about to send this email, and things have suddenly
> started moving again. That's life with NBU, I guess. I should be used
> to these mysterious lock-ups by now. But it's extremely frustrating,
> especially when you're trying to do an I/O performance test.
> 
> So, I guess I'll have to report to the DBA, the first 4 x 20GB
> fragments ran at 60 MB/sec, but the last 20GB fragment ran at less
> than 1 MB/sec. What is he going to make of that?
> 
> NBU 6.5.2 on RHEL 4. Generally it's pretty stable for me, but random
> lock ups like this continue to occur, as they have since I started
> with NBU in the 3.4 days.
> 
> Gehhh, just getting out my frustrations. Thanks for listening.
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu < at > mailman.eng.auburn.edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu


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