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- Newsgroups: comp.sys.sequent
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!think.com!linus!progress!bedford.progress.COM!tucker
- From: tucker@bedford.progress.COM (Kyle Tucker)
- Subject: Re: /etc/dump (backup) errors
- Message-ID: <1992Sep15.203422.5712@progress.com>
- Sender: tucker@bahrain (Kyle Tucker)
- Nntp-Posting-Host: bahrain
- Reply-To: tucker@bedford.progress.COM
- Organization: Progress Software Corp.
- References: <1992Sep09.215425.18559@wvus.org> <sivbl.716535512@win4>
- Date: Tue, 15 Sep 1992 20:34:22 GMT
- Lines: 41
-
- In article <sivbl.716535512@win4>, sivbl@win4.vut.EDU.AU (Brett L Sivies) writes:
- |> Hi,
- |>
- |> pete@wvus.org (Pete Gregory) writes:
- |>
- |> >we use /etc/dump - the filesystem dump program here. two years ago i
- |> >wrote a shell-script wrapper for it so the operators could just answer
- |> >questions. that works fine, if i tell dump to write directly to output
- |> >device. if i tell dump to write to stdout (an allowable feature
- |> >according to the man page), it writes several error messages to the
- |> >screen at the end of the dump that say "DUMP: Failure to acquire
- |> >semaphore", "DUMP: Failure to release semaphore" and "DUMP: Possibly
- |> >corrupted archive" (i'm not sure about the exact text of the last one).
- |>
- |> 1. Yes the problem has arrisen for myself, and with the help of sequent I
- |> was able to fix the problem straight away... Is the Tape drive you are
- |> using an Exabyte or standard .25 cartridge?
- |> My problem centred around an exebyte drive on a S27.
- |> We had to make sure the tape drive was getting all the right parameters
- |> before it would work correctly...
- |>
- |> /etc/dump 0sbdfu 15070 8 500000 /dev/rmt/<tape> /dev/dsk/<disk>
- |>
- |> This is running under PTX 1.3.0 and it works fine dumping to an exabyte
- |> drive.
- |>
- We had the same problems with PTX 1.3 with Cybernetics 8mm drive. Sequent
- FAXed us a lengthy tech note in which tehy give two options to solve the
- problem.
-
- 1) Increase SEMAEM from default 16384 to 32767
-
- 2) Use a larger block size based on the file system size.
-
- I did the former and dump runs fine now. The tech note's name/number is
- snote-hw-tape-t8mm-2.
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- Kyle Tucker - Email Administrator | Progress Software Corporation
- tucker@bedford.progress.com | 14 Oak Park
- (617)280-4565 | Bedford, Mass. 01730
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