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Date:      Wed, 24 Jun 1998 17:20:56 +1000
From:      "Taras M. Dowhaluk" <tarasd@visiondb.com.au>
To:        freebsd-questions@FreeBSD.ORG
Subject:   Removable SCSI devices
Message-ID:  <m0yojrL-003b36C@new-kyoko.mpx.com.au>

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I've just upgraded from 2.2.2-RELEASE to 2.2.6-RELEASE, very smooth indeed, 
although ppp needed some farnarckling.

However, it seems that the treatment of removable SCSI devices is different in 
2.2.6 than it was in 2.2.2.

Its an AHA-2940UW in this case, with 2 HDs and a Jaz. The AHA-2940UW config has 
not changed between upgrades, and has 'Send Start Unit' enabled on all devices.

Before, I was able to /sbin/mount a spun-down Jaz drive, which, presumably, 
sent a start-unit to the drive, spun it up, and /sbin/mount continued (with a 
few warning messages about the media having changed).

Now, I can only /sbin/mount when its still spinning, ie. just after use or just 
after a reboot. If I try after it has spun down I'm told '/dev/sd2a 
on /jaz: Device not configured'.  I can manually start it up (re-insert) and 
/sbin/mount will mount it.

A scsi -f /dev/ssc -p reveals "nothing" for that SCSI device when it is 
spun-down and "iomega jaz 1GB" when it is spun-up.

The other workaround is to /sbin/mount at boot and leave it mounted. Its no 
great drama, the Jaz users now have 2 extra steps, a /sbin/umount before they 
are able to take the cart out, and a /sbin/mount after they put the original 
cart back.


regards, taras

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Taras M. Dowhaluk
Director - Technical Operations
VisionDB Pty Ltd
Sydney, Australia
email: tarasd@visiondb.com.au
www:   http://www.visiondb.com.au
www:   http://www.biz.com.au
voice: +61 0412 281 323
fax:   +61 2 9907 1078
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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