Comment 13 for bug 1191960

Reviewed: https://review.openstack.org/47632
Committed: http://github.com/openstack/cinder/commit/de257d1a2b91e8060ff3532ced25cb2a67b14267
Submitter: Jenkins
Branch: master

commit de257d1a2b91e8060ff3532ced25cb2a67b14267
Author: John Griffith <email address hidden>
Date: Fri Sep 20 20:55:46 2013 +0000

    Fix issues with failed lvremove

    There are some race conditions that
    can cause problems with lvremove commands. In
    most cases these seem to recover nicely just
    with a simple retry of the lvremove. Adding
    a udev settle seems to elimate the rest of them.

    This is a difficult issue to reproduce, and there's
    a suspiscion that it relates to failed target
    creeates.

    The patch adds a catch on the lvremove failure,
    followed by a udevadm settle and a retry of the
    lvremove. With the setup that I've been able
    to reproduce this issue these changes have eliminated
    any force delete failures.

    The other option that had been proposed was using dmsetup remove
    but there are concerns that this may cause problems.

    Change-Id: I2a2b0d0f4fefd0daf9424ab96aaf87ba53ebc171
    Closes-Bug: #1191960