We are also running 7.4.4 and experience this once in a great while....
But not often enough that it becomes a problem. What we see every 6-8
weeks or so, is when our daily 'index' group runs that backs up all our
client indexes, I start it to run with 7 concurrent sessions, but it
only runs one stream at a time instead of 7. That's when I know it's
time to refresh our environment (stop & restart the server processes...
). I also remove \nsr\tmp and rename \nsr\res\jobsdb\ to jobsdb.old
while the processes are stopped. They'll get re-created when you restart
the Networker service. After restarting, things are fine for another 6
to 8 weeks.... This was once suggested by someone @ EMC support to fix a
group hanging problem. It seems to help with other symptoms where things
hang for no apparent reason or begin to miss-behave. 

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of STANLEY R. HORWITZ
Sent: Wednesday, May 26, 2010 2:32 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] Hung savegroup problem

Every once in a while, a savegroup on my Linux NetWorker 7.4.4 server
hangs. It always seems to hang on one client's backup, but it never
seems to be the same client. For example, tonight I happened to notice
that a savegroup hung on a backup of client x. I killed that savegroup
and then I restarted it. The same savegroup hung on a client y. No other
savegroups were running at this time. In both cases, there was no
discernible backup activity. All the clients in this particular group
are Linux file servers, except for one that is Windows 2003. There are
36 clients in this group. 

This is a fairly simple setup with a Qualstar tape library with four
LTO-3 tape drives connected via fiber to the Red Hat AS 4.5 Linux backup
server. 

I actually had a case open with EMC about this issue and their only
response was to upgrade to 7.5 on the clients if it happens again. Would
that really help? I am wondering what other people are doing to address
this problem if it still is present in later NetWorker versions.

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