Date: Sun, 29 Oct 1995 19:22:41 -0800 (PST) From: Julian Elischer <julian@ref.tfs.com> To: uhclem%nemesis@fw.ast.com (Frank Durda IV) Cc: jmb@kryten.atinc.com, current@freebsd.org Subject: Re: WANGDAT strangeness Message-ID: <199510300322.TAA09534@ref.tfs.com> In-Reply-To: <m0t9kN5-000IwpC@nemesis.lonestar.org> from "Frank Durda IV" at Oct 29, 95 08:54:00 pm
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> > [0]a WangDAT tape drive that under 2.0.5 won't let you remove the media until > [0]you reboot the system, OR you can issue a mt offline, remove the media, and > [0]then reboot to get the drive to load new media - that really stinks and > This is correct see later.. > [1] this problem must be unique to WangDAT or at least non-exabyte > [1]4mm tape drives. i use a 4mm for daily backup. unload the tape with > [1]"/usr/bin/mt -f /dev/rst0 rewoffl". load a new tape every morning and > [1]haev no problems at all. no he probably hasn't tried to do an mt offline yet. > > [2]The DAT drive has a READY and an ACCESS light. Under SCO, the READY light > [2]would blink yellow while loading/unloading, then remain green until the > [2]media is unmounted. The ACCESS light only blinked during > [2]commands/transfers, etc. So when the drive is idle (tape loaded or > [2]unloaded), the ACCESS light is dark. ok, so SCO is broken.. so? > [2] > [2]On 2.0.5-R, the ACCESS light is off until you touch the drive, then it > [2]goes on solid and remains on regardless of activity. Once the drive is > [2]touched, the front-panel eject button no longer works. (From external > [2]appearances, it acts like it is always in the middle of processing a > [2]command from the host.) no, it is stopping joe-random from pushing the eject button while you are part-way through your set of 'dump's . if you want to you can easily re-enable the button.. (try mt -f /dev/nrst0 offline) > [3][snip] > [2]I have been using the DAT drive for about four years under SCO UNIX with > [2]their standard driver, so I know that the drive works well. it's working ok, we just expect it to actidifferently than you do.. > > [3] the wangdat drive may have broken firmware...my toshiba cdrom > [3]does. i had to patch the kernel to overcome it...the drive claimed to be > [3]a hard disk! how about sending in the dmesg output, boot with -v, please. what devices are you using? read the man page for st ( man 4 st) read carefully about a 'mount session' and tapes. As long as a mount session is in progress the 'eject' button is dissabled This is as it should be End the mount session by: accessing /dev/rst0 (not nrst0) using the mt command to take the tape offline. +----------------------------------+ ______ _ __ | __--_|\ Julian Elischer | \ U \/ / On assignment | / \ julian@ref.tfs.com +------>x USA \ in a very strange | ( OZ ) 300 lakeside Dr. oakland CA. \___ ___ | country ! +- X_.---._/ USA+(510) 645-3137(wk) \_/ \\ v
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