Date: Mon, 22 Jul 1996 12:38:54 -0400 (EDT) From: Charles Kenneth Green - PRC <green@aries.isf.rl.af.mil> To: hackers@freebsd.org Subject: Tape drive Help Message-ID: <199607221638.MAA17566@aries.isf.rl.af.mil>
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I have a 4gig Sun tape drive reported as: (ahc0:4:0): "ARCHIVE Python 28454-XXX 4.BL" type 1 removable SCSI 2 st0(ahc0:4:0): Sequential-Access density code 0x8c, 512-byte blocks, write-enabled and a mt -f /dev/rst0 status reports: Present Mode: Density = 0x8c Blocksize variable ---------available modes--------- Mode 0: Density = 0x00 Blocksize variable Mode 1: Density = X3.136-1986 Blocksize = 512 bytes Mode 2: Density = X3.39-1986 Blocksize variable Mode 3: Density = X3.54-1986 Blocksize variable At present, if I use dump to backup my system I am unable to restore the dump on my freebsd system. Restore Reports "tape read error: Input/output error". However, if I take the tape over to a Solaris system with the exact same tape drive attached to it, I am able to do a restore. (Also worth noting, "tape read error: Input/output error" is also reported if I attempt to restore a tape bad on the Solaris system (/dev/rmt/0bn)). My current hypothosis is that the problem has something to do with the fact that the drive's blocksize (reported by mt) is set to variable. Any thoughts on how to cure my problem? I'd like to be able to read my old dumps on my freebsd system. Charles Green
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