Problem: CTRL-C in 'dd' results in wedged system for 5-6 minutes !

From: Guy Dallaire <dallaire_at_total.net>
Date: Fri, 11 Apr 1997 16:15:24 -0400

Strange problem !

This afternoon, I was copying a big file to tape with the 'dd' command (dd
if=myfile.dat of=/dev/nrmt1h) and I forgot to specify a bigger block size
than the default 512 bytes. The copy was taking forever so I decided to
cancel it with CTRL-C, result: dd printed a message telling me:

xyz+a: blocks in
xyz+a: blocks out (or the usual message)

After that, the system was not giving me back the prompt, so I pressed
CTRL-D. I was logged at the graphics console at this moment. xdm stopped
responding, I tried to connet with rlogin from another host, the system was
wedged and would not let me login, I could ping it OK tough...

I waited for 5-6 minutes and the system finally came back. There were 25-30
messages on the console regarding a problem with my TLZ07 (/dev/nrmt1h) and
SCSI bus 0 reset...

Any idea what happenned ?

Attached is the output of the uerf -R -o full and the dia -R -o full commands.

BTW, do you have to install something extra to use the dia -ana (analysis)
command ? It complained that the DecEvent licence was not installed. I have
a pair of alpha 2100, doesn't decevent come free with the NAS package ? How
do I install it ?

                                        Thanks !




Guy Dallaire
dallaire_at_total.net

"God only knows if god exists"
Received on Fri Apr 11 1997 - 22:56:25 NZST

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