Comment 28 for bug 1013689

Reviewed: https://review.openstack.org/10510
Committed: http://github.com/openstack/nova/commit/3b4ac312b4ba7658f6ad4d2da674092c20e05aeb
Submitter: Jenkins
Branch: stable/essex

commit 3b4ac312b4ba7658f6ad4d2da674092c20e05aeb
Author: Pádraig Brady <email address hidden>
Date: Wed Jul 11 23:45:28 2012 +0100

    ensure libguestfs mounts are cleaned up

    Make a few attempts to umount the libguestfs
    mounts, in case other processes are accessing
    the mounts (like udev etc.)

    If we still can't umount after 5 attempts
    (with average delay of about 1s between each),
    then initiate a lazy umount so that the mounts
    might be automatically cleaned up at some stage.
    We wait a further 10s after initiating the lazy
    umount, before raising an exception.

    Addresses the original issue in bug 1013689

    Change-Id: Ib5ede9f705c833825a19308c140f99c5bf3a776f
    (cherry picked from commit 5eea8879b6f3268dcaba326193bef0ed75470bb7)