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- Path: sparky!uunet!mcsun!uknet!cf-cm!news
- From: spxpmf@thor.cf.ac.uk (Phillip Fayers)
- Newsgroups: comp.sys.sun.admin
- Subject: Re: ATTENTION: A problem with dump under 4.1.1
- Keywords: tape, cleaning
- Message-ID: <15732.9207240920@thor.cf.ac.uk>
- Date: 24 Jul 92 09:20:05 GMT
- References: <1992Jul21.195006.112389@zeus.calpoly.edu> <HFL-H1A7T@linac.fnal.gov> <1992Jul23.132034.6025@csc.canterbury.ac.nz>
- Sender: news@cm.cf.ac.uk (Network News System)
- Organization: Physics Dept. University of Wales, Cardiff
- Lines: 64
- X-Mailer: Cardiff Computing Maths PP Mail Open News Gateway
-
- In article <1992Jul23.132034.6025@csc.canterbury.ac.nz> agw@math.canterbury.ac.nz (Allen Witt) writes:
- |
- | billq@fnal.gov (William R. Quayle) write
- |>In article <1992Jul21.195006.112389@zeus.calpoly.edu>, etsiao@joule (Eddie Tsiao) writes:
- |>|> In article <1992Jul20.073110.20195@aristo.tau.ac.il> shani@GENIUS.TAU.AC.IL (Oren Shani) writes:
- |>|> We have had (are having?) similar problems. We occationally get an error:
- |>|>
- |>|> DUMP: Tape write error 753 feet into tape 1
- |>|> DUMP: fopen on /dev/tty fails
- |>|> DUMP: The ENTIRE dump is aborted.
- |>|>
- |>Sorry if I've missed this in an earlier followup, but has the drive been
- |>cleaned? I realize that 8mm cleaning is a sensitive issue (you don't want
- |>to overdo it or *ever* use video cleaners!), but I encountered these same
- |>errors on our servers. After a cleaning with an Excabyte 8mm cleaning
- |>cartridge, the problems subsided.
- |
- stuff deleted
- | DUMP: write: I/O error
- |
- | DUMP: write: I/O error
- |
- | DUMP: Tape write error 4 feet into tape 1
- | DUMP: fopen on /dev/tty fails
- | DUMP: The ENTIRE dump is aborted.
- |****************************************************************
- |*********** Dump has failed, aborting rest of dump.*************
- |****************************************************************
- |Bad tape? Faulty hardware? perhaps.
- stuff deleted
- | The question to be answered is - Is this a hardware problem or
- |a software problem or a firmware problem or an interaction between all
- |or any two of these?
- | Do sun know of this problem? Have they a patch for it? Is this
- |why they are promoting upgrades to Exabyte 8500 units ( ours is an 8200)?
- |
- I've been having very simlar problems, last nights dump failed with-
- DUMP: dumping (Pass IV) [regular files]
- DUMP: Tape write error 10 feet into tape 1
- DUMP: fopen on /dev/tty fails
- DUMP: The ENTIRE dump is aborted.
-
- I've had this happen before (oddly enough its usually 10 feet into the
- tape) so I usually redo the dump by hand when I arrive in the morning
- and it works! I've tried cleaning the drive but it doesn't seem to do
- anything.
- I'm about to rewrite the dump scripts so that they reposition the tape
- and have another go if they fail.
- I also see occasional errors logged to the console:
-
- Jul 24 03:05:42 orion vmunix: st1: I/O request timeout
- Jul 24 03:05:42 orion vmunix: sm0: target 5 reverting to async operation
- Jul 24 03:05:42 orion vmunix: sm0: resetting scsi bus
- .......
-
- although this last one is the first to actually coincide with a tape
- error.
- I'll probably contact our tape drive supplier to see if he has any
- clues.
-
- --
-
- Phillip Fayers email: fayers@cardiff.ac.uk
- Sun admin/support/programming phone: 0222 874000 x 5282 (UK)
-