Thanks to all who answered -- using tcopy to verify the block size helped.
What helped more was the realization that despite the insistance of the
provider of the tape that it was a cpio archive, it was in fact a tar
archive with a blocking factor of 2048. so tar xvfb /dev/rmt/0 2048 ended up
tcopy /dev/rmt/0 turned out to be the most useful of the replies as a quick
way to find out the blocking factor.
Stefan Voss (who provided the tcopy info)
Sorry if I left you off the "gratitude" list. Now to have a word with Mr.
"I'm positive it's cpio"
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:14:04 CDT