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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/829407 Title: Ubuntu hangs on shutdown after mounting usb pendrive with btrfs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/btrfs-tools/+bug/829407/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
