problems with /dev/nst0

[Salvador Sabaini]

Derek Shaw escribió:
> I have OBSD 3.9 functioning beautifully, except...
>
> I am trying to use gtar or pax or ustar with /dev/nst0.  When I do, they
> report errors.  gtar is the most informative.  It reports an IO error.
> (and I don't think it's the Idiot Operator in this case)
>
> The same thing happens when I use /dev/st0
>
> When I use /dev/rst0, everything works as it is supposed to, except that
> the tape rewinds, which makes it much more difficult to put more than
> one archive on the tape.
>
> Looking at the files in /dev shows that st?, rst? and nst? are all
> identical in terms of permissions, etc.
>
> Any clues as to what it is going on, or how to troubleshoot further
> would be appreciated.
>
> Thanks in advance!
> d.
>
> ======== appendices =======
> here is the command that does work (except that I need it not to rewind)
> $ gtar -c -v -f /dev/rst0 /data/home/bisi/Maildir/
>
> here is the command that doesn't work
> $ gtar -c -v -f /dev/nst0 /data/home/bisi/Maildir/
>
> here is the output from the failed gtar command:
> gtar: Removing leading `/' from member names
> /data/home/bisi/Maildir/
> /data/home/bisi/Maildir/tmp/
> /data/home/bisi/Maildir/new/
> /data/home/bisi/Maildir/cur/
> /data/home/bisi/Maildir/cur/1150344764.M141735P6783V00000006I00252681_1.imap2.kibro.com,S=1829:2,S
> /data/home/bisi/Maildir/cur/1150345494.M104459P362V00000006I002526C2_1.imap2.kibro.com,S=2571:2,S
> /data/home/bisi/Maildir/sqwebmail-timestamp
> /data/home/bisi/Maildir/.Drafts/
> /data/home/bisi/Maildir/.Drafts/tmp/
> gtar: /dev/nst0: Cannot write: Input/output error
> gtar: Error is not recoverable: exiting now
>
> If we examine the archive on the tape (using /dev/rst0), this is what we
> get:
> $ gtar -tvf /dev/rst0
> drwx------ bisi/bisi         0 2006-06-14 21:25:24 data/home/bisi/Maildir/
> drwx------ bisi/bisi         0 2006-06-14 21:25:24
> data/home/bisi/Maildir/tmp/
> drwx------ bisi/bisi         0 2006-06-14 21:24:58
> data/home/bisi/Maildir/new/
> drwx------ bisi/bisi         0 2006-06-14 21:25:06
> data/home/bisi/Maildir/cur/
> -rw------- bisi/bisi      1829 2006-06-14 21:12:44
> data/home/bisi/Maildir/cur/1150344764.M141735P6783V00000006I00252681_1.imap2.kibro.com,S=1829:2,S
> -rw------- bisi/bisi      2571 2006-06-14 21:24:54
> data/home/bisi/Maildir/cur/1150345494.M104459P362V00000006I002526C2_1.imap2.kibro.com,S=2571:2,S
> -rw------- bisi/bisi         1 2006-06-14 21:25:24
> data/home/bisi/Maildir/sqwebmail-timestamp
> drwx------ bisi/bisi         0 2006-06-14 21:21:49
> data/home/bisi/Maildir/.Drafts/
> drwx------ bisi/bisi         0 2006-06-14 21:24:54
> data/home/bisi/Maildir/.Drafts/tmp/
>
> If we do the same using /dev/nst0, here's the result:
> $ gtar -tvf /dev/nst0
> gtar: /dev/nst0: Cannot read: Input/output error
> gtar: At beginning of tape, quitting now
> gtar: Error is not recoverable: exiting now
>
> --
> Derek Shaw
> BIS Business Information Systems Inc.
> Victoria, BC.
> voice: 250-885-2021   fax: 250-386-4060
> GnuPG Public Key ID: 0x5553C338
>
>   
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Derek
Try using /dev/nrst0 as it will run the tape drive in mode 2 (no rewind 
on close).

-ssf.