I'm getting a recent condition where an occasional DLT drive on the server 
just 'hangs' on 'setting up for writing, moving forward . . .'  etc.

Both the nsrjb and nsrmmd are sitting there, doing nothing.

I can kill the nsrjb, it clears out.  Cannot kill the nsrmmd, even with -9; 
It will eventually clean out of its own accord by actions of nsrd, but it 
can take up to an hour or more.

While this is going on, backups that are pre-attached to this drive process 
during mount just sit there.  Very fustrating.

This mostly happened after we moved a DLT drive from the server to a 
storage node that was all-LTO, so that recoveries are available.  The 
library is a virtual one because the drives are managed by AlphaStor.

I'm probably missing a setting someplace, but for the life of me can't find 
it.  I'm also in the process of rotating out old or much-used tapes, as I 
am also seeing the occasional tape begin to be unreadable and we've plenty 
of spares anyway (plus we're moving away from DLT).

Any assistance is appreciated.

--TSK


Library:  L700

Server:  Sun E450, 4 DLT-7000 & the Library SCSI, Networker Server, dual-fc 
link for disk backup.
Storage Node:  Sun V240, 2 LTO-2 (fiber-direct), 1 DLT-7000 (diff-scsi), 
AlphaStor server, dual-fc link for disk backup.
Storage Node:  Sun V880, 3 LTO-2 (LVD SCSI) in a separated setup.

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