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- Path: sparky!uunet!olivea!decwrl!sun-barr!cs.utexas.edu!asuvax!ncar!noao!arizona!naucse!jdc
- From: jdc@naucse.cse.nau.edu (John Campbell)
- Newsgroups: comp.sys.sun.admin
- Subject: dump verify (v option)
- Keywords: dump backup verify
- Message-ID: <5360@naucse.cse.nau.edu>
- Date: 30 Jul 92 23:18:16 GMT
- Organization: Northern Arizona University, Flagstaff AZ
- Lines: 26
-
- I believe I'm on to a problem with the verify flag on dump. (Yes, I
- know I can't verify / or /var; it's something different.)
-
- When we try adding 'v' to our dump options the following seems to
- happen. The tape writes, verify begins and (like write has previously
- done) reports a certain percentage complete. We finally get a message
- like "Verify 98% completed...finished in 1 minute" (or some such). At
- this point the tape keeps moving and we don't get a prompt for a long
- time (up to a couple of hours sometimes).
-
- Occassionally the prompt comes back with no error (especially on the
- 1/4" cartridge device) but often we get an error like "st1: unit busy
- too long" (especially on the exabyte device). This morning the screen
- was filled with "Do you want to rewrite? (Y or N)".
-
- Is there something wrong with verify ('v' option to dump) or some
- trick to making it run to completion properly. Is it simply that it
- forces itself to read to the full extent of those silly numbers we
- give dump and reading blank tape for a long time causes occassional
- errors?
-
- Anyone else using verify? (It seems like a good idea on unattended backups
- which can fit on one tape.)
- --
- John Campbell jdc@naucse.cse.nau.edu
- CAMPBELL@NAUVAX.UCC.NAU.EDU
-