From: Madison Kelly <linux@alteeve.com>
To: Linux-SCSI Mailing List <linux-scsi@vger.kernel.org>
Subject: Rescanning a usb-mounted fs causes scsi device address to change
Date: Tue, 13 Jul 2004 17:28:03 -0400 [thread overview]
Message-ID: <40F453E3.2050308@alteeve.com> (raw)
Hello all!
This is my first post to the list so let me appologise if I am
missing something obvious.
I am writting a perl program that backs up data to a USB2/Firewire
connected hard drives. I've been writting it under Fedora Core 1 and 2
and I use Kurt Garloff's 'rescan SCSI bus' script. What I have found is
that if a usb-connected partition (say at '/dev/sda1') is mounted and
the rescan script is run (via 'sudo' with the '-r' remove switch) the
device shifts to '/dev/sdb1' instead of being ignored. This obviously
breaks any mounts and associated bad stuff (tm) happens.
I am an amature programmer so again I worry that I am missing
something obvious. I've been reading as much as I can on the 'scsi
add|remove-single-device w x y z > /proc/scsi/scsi' call but there seems
to be very little documentation on how these calls work. If someone
doesn't know what's happening but can point me at something that might
help be figure this out that would be greatly appreciated, too.
In case it helps, I am currently developing this on an IBM thinkpad
a22m (Intel 440BX/P3 1GHz) machine with an ALI USB2/Firewire PCMCIA card
and an external USB2->IDE carrier that uses removable 3.5" IDE trays
(poor person's hot-swap). If any other info/specs will help I'll be glad
to pass them along.
Thank you in advance!
Madison
reply other threads:[~2004-07-13 21:27 UTC|newest]
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