> Hello,
> 
> Networker Server: Solaris 8
> Networker Software: 7.1.2
> 
> Have run into a strange problem where I have two nsrmmd process that will
> not be killed on the networker server. I stopped networker and all of the
> other networker process shutdown normall. Prior to this happening I had a
> backup session that was writing to two lto1 fiber drives. The backup that
> was writing to drives was hung. I stopped the backup that was hung, then
> proceeded to stop networker. I noticed the two hung nsrmmd processes by
> running a ps -ef|grep nsr. I waited 30 minutes and the two processes were
> still in the process table. Checking the daemon.log and /var/adm/messages I
> don't see any tape drive errors or any reason why the backup would have
> hung in the first place. Does anyone have any suggestions as to why this
> would be happening.

If a device has an issue, then commands and process which access the
device can hang.  If you truss the processes, are they in a read() or
write() system call?

If you run fuser on the tape devices, do those processes have them open?

If so, they're probably in the system call.  They cannot be killed or
have any signal operate on them until the call returns back to user
space. 

Often it's difficult to force that to occur.  Sometimes power cycling
the drive is enough to kick the driver back to some bit of sanity.
Sometimes you just have to reboot.  It depends on the device and on the
driver. 


-- 
Darren Dunham                                           ddunham AT taos DOT com
Senior Technical Consultant         TAOS            http://www.taos.com/
Got some Dr Pepper?                           San Francisco, CA bay area
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