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May 2009, Week 3

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Subject:
From:
Craig Lalley <[log in to unmask]>
Reply To:
Craig Lalley <[log in to unmask]>
Date:
Mon, 18 May 2009 15:13:09 -0700
Content-Type:
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I always thought the SLT tape with store was not very efficient, I don't think the compress, maxtapebuf parameters were supported?

-Craig


--- On Mon, 5/18/09, donna hofmeister <[log in to unmask]> wrote:

From: donna hofmeister <[log in to unmask]>
Subject: Re: backup hang and devinfo hang
To: [log in to unmask]
Date: Monday, May 18, 2009, 4:55 PM

Imo -- combining a (full) backup onto an slt tape is only viable on 'small'
systems (think 918).

On 'medium' size systems, you might be able to do something like a
store-to-disk (using whatever archiving product your site uses) as one
process.  Then as a separate process (job), include the std file on your
slt.  *if* you are using a 3rd-party archiving too then you'll want to take
care to make sure you include that software on the slt as well!

On 'large' systems -- make a nice simple slt (or minimal) and get your
backup out to tape/dlt.

     - d

---
Donna Hofmeister
Allegro Consultants, Inc.
408-252-2330


> -----Original Message-----
> From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On
> Behalf Of Dave Powell, MMfab
> Sent: Monday, May 18, 2009 2:36 PM
> To: [log in to unmask]
> Subject: Re: [HP3000-L] backup hang and devinfo hang
> 
> :file t = $null
> :store mysmallfileset; *t;
> STORE/RESTORE VERSION C.75.09 (C) 1986 HEWLETT-PACKARD CO.
> 
> 
> 
> ----- Original Message -----
> From: "Craig Lalley" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, May 18, 2009 14:00
> Subject: Re: [HP3000-L] backup hang and devinfo hang
> 
> 
> Just wondering, did you post your version of STORE?
> 
> To find it, just store a file (to disk) and look at the banner.
> 
> -Craig
> 
> 
> --- On Mon, 5/18/09, Dave Powell, MMfab <[log in to unmask]> wrote:
> 
> From: Dave Powell, MMfab <[log in to unmask]>
> Subject: Re: backup hang and devinfo hang
> To: [log in to unmask]
> Date: Monday, May 18, 2009, 3:31 PM
> 
> Ouch !
> 
> Presumably it is only a very intermittent error, since we currently
> backup
> 80,000+ files a night on a combined store/slt, and we have only had
> this
> error once. Also, in our case we did not get the "Program terminated in
> an
> error state. (CIERR 976)" -- both the backup job and devinfo in the
> other
> job hung. Actually, the "hang" part bothered us a lot more than an
> abort
> would have.
> 
> We had good old fashioned tape errors a few days before, and again a
> few
> days later, but nothing since the operator gave the drive a good
> cleaning,
> so I was *guessing* a cause along those lines.
> 
> FWIW, the number of files in our backups increases steadily, mostly
> because
> we archive several hundred reports a month. 82,000 Friday night, 65,000
> in
> 09/20078, 37000 in 11/2003, etc.
> 
> So, is there some point at which adding approx 800+ files a month gets
> us
> into REAL trouble ??
> (they're in separate groups, so a limit on files in a group should
> never be
> an issue).
> 
> 
> Dave (RELEASE: C.75.00 MPE/iX HP31900 C.45.05 USER VERSION: C.75.05)
> Powell,
> MMfab
> 
> 
> ----- Original Message ----- From: "cathlene mcrae"
> <[log in to unmask]>
> To: "HP3000 List" <[log in to unmask]>; "Dave Powell"
> <[log in to unmask]>
> Sent: Monday, May 18, 2009 09:17
> Subject: Re: backup hang and devinfo hang
> 
> 
> Problem is a know issue, with sysgen and store. If the number of files
> for
> the
> store is > 32k files.
> 
> Cathlene Mc Rae
> HP SR. Response Center Engineer
> [log in to unmask]
> 
> 
> 
> When creating a combined SLT/STORE tape, the Store process aborts with:
> 
> 
> SENDMAIL TO SYSGEN FROM STORE FAILED. (S/R 1741)
> **error** failed to receive status from STORE--
> Can't make tape.
> **error** Tape command failed.
> SYSGEN tape is NO GOOD!
> sysgen> e
> 
> 
> 
> 
> Program terminated in an error state. (CIERR 976)
> REMAINDER OF JOB FLUSHED.
> 
> SENDMAIL TO SYSGEN FROM STORE FAILED. (S/R 1741)
> 
> This causes SYSGEN to mark the tape as bad and unreadable.
> 
> SOLUTION:
> >From original document 4701321604 (originally seen on 5.5):
> 
> Cause:
> 
> One of the fields in the sendmail record that is passed between SYSGEN
> and
> STORE is a 16-bit field that is used to contain the number of files
> that
> were
> successfully stored. If the number of files that are successfully
> stored is
> greater than 32767, the process will fail and the tape will be marked
> as bad
> .
> 
> Temporary Solution:
> 
> The only temporary workaround is to store less than 32K files when
> creating
> a
> combined SLT/STORE tape.
> 
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