Date: Tue, 20 Jan 1998 08:57:10 -0800 From: Eric Hedstrom <erich@compecon.com> To: vrtin@uni-mb.si Cc: freebsd-questions@FreeBSD.ORG Subject: Re: dump: end-of-media indication? (dat, crash) Message-ID: <34C4D766.F542FDF6@compecon.com> References: <199801191438.PAA21914@unicorn.uni-mb.si>
next in thread | previous in thread | raw e-mail | index | archive | help
Yes, DDS DAT drives work well with the -a option in my experience.
David Vrtin wrote:
>
> Hello
>
> >From "man dump":
>
> -a ``auto-size''. Bypass all tape length considerations, and enforce
> writing until an end-of-media indication is returned. This fits
> best for most modern tape drives. Use of this option is particu-
> larly recommended when appending to an existing tape, or using a
> tape drive with hardware compression (where you can never be sure
> about the compression ratio).
>
> I have Sony DDS DG90M (90m/295feet) data carttridge and:
>
> (ncr0:6:0): "ARCHIVE Python 28388-XXX 5.45" type 1 removable SCSI 2
> st0(ncr0:6:0): Sequential-Access
> st0(ncr0:6:0): 6.7 MB/s (150 ns, offset 8)
> density code 0x13, drive empty
>
> Do I have "modern tape driver" or not? :-)
>
> # mt rewind
> # printenv TAPE
> /dev/tape
> # ls -la /dev/tape
> lrwxrwxrwx 1 root wheel 5 Apr 15 1997 /dev/tape -> nrst0
> # dump -0au /u
> [...]
> DUMP: 63.53% done, finished in 0:37
> DUMP: 68.49% done, finished in 0:32
> DUMP: 74.53% done, finished in 0:25
> DUMP: 79.67% done, finished in 0:20
> DUMP: 82.92% done, finished in 0:17
> DUMP: write error 1773020 blocks into volume 1
> DUMP: Do you want to restart?: ("yes" or "no") no
> DUMP: "Yes" or "No"?
> DUMP: Do you want to restart?: ("yes" or "no") no
> DUMP: The ENTIRE dump is aborted.
>
> On console:
>
> ncr0: SCSI phase error fixup: CCB already dequeued (0xf0940400)
> ncr0: timeout ccb=f0940800 (skip)
> ncr0: timeout ccb=f0940400 (skip)
> ncr0: timeout ccb=f0940000 (skip)
>
> Box freezes, hand reset.... :( I have 2.2.5-STABLE from 11. jan. 1998.
>
> Thanks for any help,
> David
>
> --
> David Vrtin (system manager) # tel: +386 62 220-7129
> University of Maribor, Faculty of EE and CS # fax: +386 62 211-178
> Smetanova 17, SI-2000 Maribor, Slovenia # www.uni-mb.si/~david/
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?34C4D766.F542FDF6>