Udev runs blkid on device close, thwarting any rbd unmap that
immediately follows use of the device. Explicitly settle for now.
See #4183.
Signed-off-by: Sage Weil <sage@inktank.com>
This is fugly, but sudo -E doesn't work. Fix this after we are installing
debs and the path doesn't matter anymore!
Signed-off-by: Sage Weil <sage@inktank.com>
This tests for the behavior reported in #3964. It passes on the current
code, but fails on 3.2 in squeeze (and 32-bit?).
Signed-off-by: Sage Weil <sage@inktank.com>