Multi datastore support for provisioning of instances on ESX

[Sirisha Guduru]

Nova essex setup with ESXi hypervisor.

Instance provisioning on ESX is done only on a single datastore (first datastore of ESX) , even though there are multiple datastores present.

Currently, there is no way to specify the datastore to be used while provisioning an instance.

[Shawn Hartsock (hartsock)]

What's the progress on this?

[Sabari Murugesan (smurugesan)]

Working on this bug.

Currently, there is no way to specify the datastore on which instance has to be provisioned. The use of regex to choose a datastore will fix this issue. The fix proposed for bug 1171930 addresses the capacity issue with datastores, hence that will not be fixed here.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/30822

[Sabari Murugesan (smurugesan)]

Approach is as follows :-

1. The user may specify a regex as a parameter (vmwareapi_datastore_regex) in nova.conf
2. If specified, the regex is used to select a datastore from the cluster at the time of provisioning an instance
3. If not, the default behavior to choose the first datastore prevails.

This enables an user to whitelist or blacklist a set of datastores.

[Divakar Padiyar Nandavar (divakar-padiyar-nandavar)]

Solution proposed is resolving only a part of the bug and not resolving the problem "If the utilization of datastore is complete, then the instance goes into error state". Should there be any dependency added on bug 1171930 solution to mark this complete? or Should we change the description of this bug?

[Sabari Murugesan (smurugesan)]

Updated the bug description.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/30822
Committed: http://github.com/openstack/nova/commit/9579ece88962ec86bd54d7930c764105e38f5db6
Submitter: Jenkins
Branch: master

commit 9579ece88962ec86bd54d7930c764105e38f5db6
Author: Sabari Kumar Murugesan <email address hidden>
Date: Tue May 28 18:08:09 2013 -0700

    Fix VMwareVCDriver to support multi-datastore

    This fixes the issue of VCDriver selecting the first datastore of
    Cluster while provisioning instances. User can provide a regex to
    match with the desired datastores.

    Fixes: bug #1104994

    Change-Id: I319b0d8afd03e9fef00ea0c8c799790714685104

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/grizzly
Review: https://review.openstack.org/41657

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/41657
Committed: http://github.com/openstack/nova/commit/dbd2afb6193de2cdf1b80b9a56bb09f563b37686
Submitter: Jenkins
Branch: stable/grizzly

commit dbd2afb6193de2cdf1b80b9a56bb09f563b37686
Author: Sabari Kumar Murugesan <email address hidden>
Date: Tue May 28 18:08:09 2013 -0700

    Fix VMwareVCDriver to support multi-datastore

    This fixes the issue of VCDriver selecting the first datastore of
    Cluster while provisioning instances. User can provide a regex to
    match with the desired datastores.

    Fixes: bug #1104994

    (cherry picked from commit 9579ece88962ec86bd54d7930c764105e38f5db6)

    Conflicts:

            etc/nova/nova.conf.sample
            nova/tests/test_vmwareapi.py
            nova/tests/test_vmwareapi_vm_util.py
            nova/virt/vmwareapi/driver.py
            nova/virt/vmwareapi/vm_util.py
            nova/virt/vmwareapi/vmops.py

    Change-Id: I319b0d8afd03e9fef00ea0c8c799790714685104