Ken Sletten B894 C312 x62525 wrote:

[much of war story deleted]

> Turns out the system didn't even recognize LDEV 7 as
> *any* kind of tape drive anymore:  Try doing a STORE,
> and result was a message that said something like "wrong
> type of I/O device", etc.  SHOWDEV 7 said LDEV 7 was
> fine....

If it misses I/O path configuration, system releases the ldev number,
and your non-nailed I/O devices claim it right away.  If you did the
showdev and it appeared with a "J" flag noting "Job-accepting" like
the other non-nailed ldevs, it fits my symptoms, although not the same
disease.

> The HP RC couldn't think of anything else to try either.
> So just like Jeff, I did a hard reset and re-boot.  And just
> like Jeff, after I did that everything was back to normal....

Customers under duress often perform miracles :-)  But the same old
adage applies to almost any problem:  reboot, cycle power, reseat the
boards, reseat the power cables, reseat the connectors, etc.

This is fine for PCs, breadmakers, microwaves, and the like; but it's
no way to run a mission critical server (even if it does often work).

Jeff