Comment 2 for bug 1011159

Reviewed: https://review.openstack.org/10414
Committed: http://github.com/openstack/nova/commit/1ba3dfec786c60e53ceb3b682bcf927224102a0b
Submitter: Jenkins
Branch: master

commit 1ba3dfec786c60e53ceb3b682bcf927224102a0b
Author: Chuck Short <email address hidden>
Date: Fri Jul 27 10:25:51 2012 -0500

    Add persistent volumes for tgtd.

    Currently if you restart the server running nova-volume
    or restart tgt, you will loose your iscsi targets that
    have been created. This is not good.

    In order for iscsi targets to be persistent across
    reboots or restarts, one has to have the target's configuration
    information in /etc/tgt/targets.conf or /etc/tgt/conf.d.
    So when tgtd is restarted then the iscsi targets will be there
    as expected.

    This patch will add a configuration file to $state_path/volumes
    when the volume is created. The configuration file is identified by
    the volume uuid. It creates a logicalunit when the volume is created
    as well. The iscsi target and configuration file
    will be removed once the volume has been removed as well.

    In order to use this, you have to include the following in
    your /etc/tgt/targets.conf

    include $state_path/volumes/*

    For upgrades, it will just re-create the volumes
    already in the volumes table.

    Fixes LP: #1011159

    Change-Id: I38fc096ab881ccb52cb688ae46d9d36b0a7b3a45
    Signed-off-by: Chuck Short <email address hidden>