I just experienced a problem that is somewhat common. My overnight
backups hung up for some reason on cloning--the GUI monitor showed that
clones were occurring, but the jukebox was idle. My backup groups did
not complete cloning, and another backup was waiting to start. I went
into the jukebox operations gui and did a 'reset'. This caused both of
the tapes to rewind and unload just fine, although it gave the error
"sdlt tape /dev/sdlt1.1.nrvc is reading" at the end. In the jukebox
gui, the inventory looks correct, with the drives empty. I explicitly
tried doing an inventory as well, but get the error that "All of the
devices are in use by nsrmmd". Back in the 'monitor' window of the main
gui, it still shows the drive mounted for the clone tape, and the groups
were still supposedly cloning. I clicked on 'manage groups' and did a
'stop' on both groups waiting to clone. This had the effect of
canceling the supposedly current cloning job (as I intended).
Well, the above isn't too common, but here's the effect that is: since
the gui still thinks the clone tape is mounted, in spite of my reset, it
tries to rewind the clone tape when I cancel the group. Actually, I
think it's just trying to backspace, 'bsf 2', to write and end of tape
mark or whatever. It can't rewind the tape since it is not there, so it
throws an error and marks the tape full (in this case, <1% of 200Gb).
Luckily, it's not trying to unload the tape (yet), because I'll probably
need to go to the jukebox and use the front panel to reload the tape in
order to make Legato happy. In fact, I just tried that--the jukebox
inventory doesn't show the tape in the drive, it loses it from the slot
inventory, and the monitor pages still thinks it is in the drive. I'm
going to do a 'nsrjb -HE' at the Unix prompt, and then will probably
have to kill/restart networker services.
This is on an SGI server (IRIX 6.5.20), Networker 6.1.3, jukebox is a
Quantum ATL M1500 (20 slots).
--
Martin J. Dellwo
(610) 458-5264 x6512
mdellwo AT prdus.jnj DOT com / dellwo AT 3dp DOT com
Systems Administrator, 3DP / PRDUS
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