[Bug 829407] Re: Ubuntu hangs on shutdown after mounting usb pendrive with btrfs

[Carey Underwood]

Do you recall if the device specifically unmounted before removing it?
Btrfs doesn't handle devices going missing very well yet.

The output of alt-sysrq-w during a hang would be useful.

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https://bugs.launchpad.net/bugs/829407

Title:
  Ubuntu hangs on shutdown after mounting usb pendrive with btrfs

Status in “btrfs-tools” package in Ubuntu:
  New

Bug description:
  After mounting a pendrive with btrfs on it, Ubuntu hangs on shutdown
  even if the drive has been previously removed. The behavior can be
  observed in Ubuntu 10.10 as well as in 10.04.

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