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Date:      Tue, 17 Nov 2009 23:05:13 -0800
From:      "Guojun Jin" <gjin@ubicom.com>
To:        <freebsd-stable@freebsd.org>
Cc:        questions@freebsd.org, freebsd-usb@freebsd.org
Subject:   8.0-RC3 USB lock up on mounting two partitions from one USB drive
Message-ID:  <CB2DD11991B27C4F99935E6229450D3203950A1C@STORK.scenix.com>

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When mounting two partitions from a USB dirve, it can cause the drive =
access lock up for a long time.
Details:

Terminal 1 --
term1# mount /dev/da0s3d  /mnt
term1# cd /mnt ; rm -fr *

when rm starts, go to terminal 2 and do:

term2# mount /dev/da0s3e /dist ### this will hanging for a long time and =
USB hard drive activity light is off.
After more than 1-2 minutes, mount returns, and the drive activity light =
is blinking, thus removing is going on.

term2# ls /dist   ### this will cause dUSB dirve hanging again -- no =
avtivity.
Similarly, ls will finish in a couple of miniutes or longer, the rm =
command continues; but for a while, the drive
activity will stop again.

Reboot machine, repeat the above steps, and result will be the same. =
Reboot machine again, and just mount one
partition, then doing "rm -rf *" without involve the second partition, =
rm will finish quickly.

Has anyone obseved this behave on 8.0-RC?

-Jin
















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