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- Newsgroups: comp.unix.aux
- Path: sparky!uunet!stanford.edu!ames!nsisrv!jagubox!jim
- From: jim@jagubox.gsfc.nasa.gov (Jim Jagielski)
- Subject: Re: ** HELP **: Can't read backup tape!!
- Message-ID: <1232@jagubox.gsfc.nasa.gov>
- Lines: 49
- Sender: usenet@nsisrv.gsfc.nasa.gov (Usenet)
- Nntp-Posting-Host: jagubox.gsfc.nasa.gov
- Reply-To: jim@jagubox.gsfc.nasa.gov (Jim Jagielski)
- Organization: NASA/Goddard Space Flight Center
- References: <1992Nov7.224434.9091@ips.cs.tu-bs.de>
- Date: Mon, 9 Nov 1992 13:37:27 GMT
-
- koch@eis.cs.tu-bs.de (Andreas Koch) writes:
-
- >(taking three deep breaths, calming down)
- >I am confronted by the following problem:
-
- >I made a backup DAT under A/UX 2.0.1 using Tony Cooper's
- >st driver (generic) using a WangTEK 6130-HS DAT drive
- >and the following command:
- > dump.bsd -T4.2 0unbsf 64k 1300m / | tbb >/dev/rmt/nrst
-
- >This backup must have worked, since I have restored various
- >files using it.
-
- >Now, I have installed A/UX 3.0 plus Jim Jagielski's tc driver,
- >since it supports the WangTEK directly and st has again expired.
- >But when I try to use the command (and various permutations thereof)
- > restore -T4.2 ivbf 64k /dev/rmtc
- >I get only the message
- > no header after volume mark
- >and the restore aborts. Can anyone help me to restore the backup
- >or have I lost more than 500MB of data, accumulated over 4 years?
-
- >I don't think that the WangTEK is broken, since testdrive works perfectly
- >and backups created using A/UX 3.0 dump.bsd can be read using A/UX 3.0
- >restore. However, A/UX 2.0.1 restore is unable to read the 2.0.1 backup
- >under A/UX 3.0. What has happened? Are the tape formats written by
- >st and tc incompatible? If so, where can I get a non-expired version of
- >the generic st driver? Or do I have to play games with the system clock?
- >_ANY_ hints are appreciated!
-
- Okay... here's the deal.
-
- The 'st' driver doesn't require 8k blocking so it's blocked at either
- 512 or 1024 (depending on the drive). 'tc' requires 8k blocking when
- reading or writing. So tapes written by 'st' currently can't be read
- by 'tc' (this will change kinda soon).
-
- To be able to use 'st', you'll need to reset the clock to about
- 2 (or more) months ago to "fool" 'st' into thinking that it hasn't expired
- yet. You can then recover your stuff and, if you want, back it all up
- with 'tc' since it works with your setup (and you don't have to
- worry about it expiring :)
-
- As far as I can tell, 'st' is in semi-permanent limbo...
- --
- Jim Jagielski | "It is not I who am crazy...
- jim@jagubox.gsfc.nasa.gov | it is I who am MAD!"
- NASA/GSFC, Code 734.4 |
- Greenbelt, MD 20771 | - Ren
-