> Setup is Solaris 8, LTO1 drives connected via JNI HBAs,  Networker 6.1.3.
>
> Has anyone had a problem where a scsi bus reset rewound the drive without
> Networker's knowledge?   Any logs or ways to trace this?

I have no evidence that "scsi bus resets" or anything else in particular
was the cause, but I have seen tape corruption of older versions of
networker that appeared to be caused by unexpected rewinds.

If I had tapes that appeared to be much higher utilization than normal
(say over 100GB on a DLT 7000), then I'd run a quick 'scanner -inv' on
the tape.

Some of them would report that the first file on tape was file 87 (or
so) instead of 2.  That means that tape files 2 - 86 were written to the
tape, the tape was (somehow) rewound, then Networker began writing to
the tape again.

Note that this sequence of events did not cause Networker to overwrite
the label at the beginning of the tape, just the contents.  I never
found any logs that suggested such an event had occurred.  Just some
tapes that started getting beyond phenomenal compression.

I have not personally seen this on 6.1.2, but I have seen it on older
versions (It may have been 5.5 even).

--
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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