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From: David Vrtin <vrtin@uni-mb.si>
Message-Id: <199801191438.PAA21914@unicorn.uni-mb.si>
Subject: dump: end-of-media indication? (dat, crash)
To: freebsd-questions@FreeBSD.ORG
Date: Mon, 19 Jan 1998 15:38:42 +0100 (CET)
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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/