A few days ago I asked:
> Hi folks,
>
> I've got an ADVFS fileset on a system with no tape drive. I can't use
> rdump because there is no "raw" device to open.
>
> I can't use vdump directly because it doesn't appear to support
> remote tape drives. So how do I do it? I'd guess "vdump | rsh" but
> I'm having trouble restoring from it. Any thoughts?
I received a number of answers - all but one of which said you have to
use dd with some specific blocking factor. The one that didn't say
that had 2 words "dec nsr" which is usefule to know about in the
general case, but didn't answer the question I asked.
Some said that I had to figure out the blocking factor which was kind
of not too helpful (sorry :-)
Those that mentioned specific values had differing opinions, 3 said
60kb, and 2 said 10kb. I went with the marjority and tried 60kb - it
worked, so until it fails that is what I'll use.
/sbin/vdump -0 -u -b 60 -f - /fileset' | rsh tapehost dd of=/dev/nrmt0h bs=60k
rsh dumphost 'dd if=/dev/nrmt0h bs=60k'|vrestore -x -v -f -
Thanks to
"Andreas Bungert [ET]" <bungert_at_rhrk.uni-kl.de>
Andrew Greer <Andrew.Greer_at_vuw.ac.nz>
Dave Cherkus <cherkus_at_UniMaster.COM>
David Warren <warren_at_atmos.washington.edu>
Helgi Viggosson <helgi_at_ott.is>
Jim Belonis <belonis_at_dirac.phys.washington.edu>
Johnny Kwan <J.Kwan_at_utexas.edu>
Kazuro FURUKAWA <furukawa_at_kek.jp>
Todd Kover <kovert_at_umiacs.UMD.EDU>
Veselin Terzic <terzic_at_mda.ca>
alan_at_nabeth.cxo.dec.com
philip_at_uvo.dec.com
stellr_at_smyrna.cc.vt.edu
--
Sid Shapiro sid_at_forte.com
Forte Software (510) 869-3440
Received on Tue Oct 17 1995 - 13:19:18 NZDT