Comment 3 for bug 973194

Reviewed: https://review.openstack.org/6262
Committed: http://github.com/openstack/nova/commit/647e4584773716d4b0e3fc114cc5db9c550ec078
Submitter: Jenkins
Branch: master

commit 647e4584773716d4b0e3fc114cc5db9c550ec078
Author: Mandar Vaze <email address hidden>
Date: Thu Apr 5 01:33:34 2012 -0700

    Introduced flag base_dir_name. Fixes bug 973194

    rebased from master.

    If user faces locking related problem when two nova-compute hosts
    sharing same disk area via nfs, try to download same image into
    cache concurrently - Then base_dir_name can be set to "_base_$my_ip" in
    nova.conf

    Default value for base_dir_name is "_base" thus retaining existing
    behavior.

    Change-Id: Icff10ed75ba83f7256731614dc9e01e578b347a4