tom@mermaid.Litle.Com (Tom Hampton) (12/01/90)
We had thought that printing out a catalog of a tape's
contents prooved that the tape would be restoreable:
cpio -itvB </dev/tape
In practice, we have found that the above commamd completes
with success (repeatably) in instances where the tape proved
(repeatably) unrestoreable.
Any suggestions?
--
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Tom Hampton, Mgr. New Technology, Litle & Co. | POB A218, Hanover, NH 03755
| +1 603 643 1832
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Design is about figuring out what you won't be able to do.
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tom@mermaid.litle.com {backbone}!dartvax!mermaid!tom
===============================================================================emanuele@overlf.UUCP (Mark A. Emanuele) (12/03/90)
In article <528@mermaid.Litle.Com>, tom@mermaid.Litle.Com (Tom Hampton) writes: > We had thought that printing out a catalog of a tape's > contents prooved that the tape would be restoreable: > > cpio -itvB </dev/tape > > In practice, we have found that the above commamd completes > with success (repeatably) in instances where the tape proved > (repeatably) unrestoreable. > > Any suggestions? Try good old dd It will tell you if the tape is readable all the way to the end. I use this to verify formatted disks for readability. dd if=/dev/tape of=/dev/null This should work (I think). -- Mark A. Emanuele V.P. Engineering Overleaf, Inc. 500 Route 10 Ledgewood, NJ 07852-9639 attmail!overlf!emanuele (201) 927-3785 Voice (201) 927-5781 fax emanuele@overlf.UUCP
aronb@gkcl.ists.ca (Aron Burns) (12/03/90)
In article <528@mermaid.Litle.Com> tom@mermaid.litle.com (Tom Hampton) writes: >We had thought that printing out a catalog of a tape's >contents prooved that the tape would be restoreable: > >cpio -itvB </dev/tape > >In practice, we have found that the above commamd completes [...] >Any suggestions? To verify that the media is good, try dd if=/dev/tape of=/dev/null and if you see something liek 35000+0 blocks in 35000+0 blocks out this tells you that the same number of blocks went in as out ( should always happen ) and that there were no retries (+0). This does not verify that the tape info matches the disk info, only that the media is good. Aaron Burns "Nothing I say on the net is binding aronb@gkcl.ists.ca to our corporation" Toronto, Ontario "Life is a forge, and the purest metal (416)392-4310 comes from the hottest fire"