I've seen this when networker is trying to start a save and
a bootstrap is running. The bootstrap locks down the media
database and when a backup tries to start it can't connect to
the media database. Also, an nsrim process will sometimes
check the media database automatically after a  savegroup completion
if one hasn't run for a certain period of time (I'm not sure what the
criteria is for running the nsrim but the file /nsr/mm/nsrim.prv
has something to do with it). I think that if this nsrim proc is runninng
when a backup tries to start will cause the backup to fail with the
messages you see below.

I'd check the daemon.log for anything like a bootstrap or the
media database compressing that might be locking down
the media database when the backup starts.

Duncan


George Sinclair wrote:

> Hello,
>
> We sporadically see failed saveset messages on random clients:
>
> --- Unsuccessful Save Sets ---
>
> * client:/tmp 1 retry attempted
> * client:/tmp save: error, can't connect to media database on server
> * client:/tmp
> * client:/tmp save: Cannot open save session with server
> * client:/vol03 1 retry attempted
> * client:/vol03 save: error, can't connect to media database on server
> * client:/vol03
> * client:/vol03 save: Cannot open save session with server
>
> I've substituted the word client and server in the sample. This does not
> always occur on the same clients and not always on the same file
> systems. This is just a sample.
>
> We're running NetWorker 6.1.1 on Solaris 2.8 with a Linux Storage node
> server running under RedHat 7.1. Does anyone know what causes these
> errors? Is there something we can do, or something we should NOT be
> doing that might be contributing to this problem? We are not running a
> SAN, and we try to stage our groups as appropriate.
>
> Thank you.
>
> George
>
> George.Sinclair AT noaa DOT gov
>
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