9track drive woes

From: Rick Murphy <rmurphy_at_itm-inst.com>
Date: Sun Feb 17 12:19:04 2002

At 11:55 AM 2/17/02 -0500, Pat Finnegan wrote:
>After cleaning, same problem. Now, when I try to copy data off the tape
>using "COPY MUA0 NEWS.TAR", VMS gives me these errors:
>
>%COPY-E-READERR, error reading _MUA0:[].;
>-RMS-F-RER, file read error
>-SYSTEM-W-DATAOVER, data overrun
>%COPY-W-NOTCMPLT, _MUA0:[].; not completely copied
>
>when I use dump, like "DUMP MUA0 /OUT=NEWS.DMP", it works just perfectly
>fine, which leads me to believe it might be a VMS problem. Prior to now,
>I was able to copy straight from the foreign mounted volume OK, but now
>it's not working at all, even after I power-cycled the drive and the vax.

When you DUMP the tape, DUMP uses a large buffer. When you use COPY, you
get the default RMS buffer size, which is too small for the tape blocks.
Use
DUMP MUA0:/BLOCK=COUNT=1
to get the block size, then
MOUNT/FOREIGN/BLOCK=xxx MUA0:
to mount the tape with the right blocksize. COPY should then work.
         -Rick
Received on Sun Feb 17 2002 - 12:19:04 GMT