Comment 63 for bug 1449062

Reviewed: https://review.openstack.org/327624
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=6bc37dcceca823998068167b49aec6def3112397
Submitter: Jenkins
Branch: stable/liberty

commit 6bc37dcceca823998068167b49aec6def3112397
Author: Daniel P. Berrange <email address hidden>
Date: Mon Apr 18 16:32:19 2016 +0000

    virt: set address space & CPU time limits when running qemu-img

    This uses the new 'prlimit' parameter for oslo.concurrency execute
    method, to set an address space limit of 1GB and CPU time limit
    of 2 seconds, when running qemu-img.

    This is a re-implementation of the previously reverted commit

    commit da217205f53f9a38a573fb151898fbbeae41021d
    Author: Tristan Cacqueray <email address hidden>
    Date: Wed Aug 5 17:17:04 2015 +0000

        virt: Use preexec_fn to ulimit qemu-img info call

    NOTE (kchamart) [stable/liberty]: Add a check for the presence of
    'ProcessLimits' attribute (which is only present in
    oslo.concurrency>=2.6.1; and a conditional check for 'prlimit' parameter
    in qemu_img_info() method.

    Upstream discussion[1][2] that led to merging this patch to
    stable/liberty branch.

    [1] http://lists.openstack.org/pipermail/openstack-dev/2016-September/104091.html
    [2] http://lists.openstack.org/pipermail/openstack-dev/2016-September/104303.html

    Closes-Bug: #1449062
    Change-Id: I135b5242af1bfdcb0ea09a6fcda21fc03a6fbe7d
    (cherry picked from commit 068d851561addfefb2b812d91dc2011077cb6e1d)