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>
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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/
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