[openstack-dev] [Cinder] Support LVM on a shared LU

Mitsuhiro Tanino mitsuhiro.tanino at hds.com
Tue May 20 15:31:03 UTC 2014


Hello All,

I'm proposing a feature of LVM driver to support LVM on a shared LU.
The proposed LVM volume driver provides these benefits.
  - Reduce hardware based storage workload by offloading the workload to software based volume operation.
  - Provide quicker volume creation and snapshot creation without storage workloads.
  - Enable cinder to any kinds of shared storage volumes without specific cinder storage driver.
  - Better I/O performance using direct volume access via Fibre channel.

In the attachment pdf, following contents are explained.
  1. Detail of Proposed LVM volume driver
  1-1. Big Picture
  1-2. Administrator preparation
  1-3. Work flow of volume creation and attachment
  2. Target of Proposed LVM volume driver
  3. Comparison of Proposed LVM volume driver

Could you review the attachment?
Any comments, questions, additional ideas would be appreciated.


Also there are blueprints, wiki and patches related to the slide.
https://blueprints.launchpad.net/cinder/+spec/lvm-driver-for-shared-storage
https://blueprints.launchpad.net/nova/+spec/lvm-driver-for-shared-storage
https://wiki.openstack.org/wiki/Cinder/NewLVMbasedDriverForSharedStorageInCinder
https://review.openstack.org/#/c/92479/
https://review.openstack.org/#/c/92443/

Regards,
Mitsuhiro Tanino <mitsuhiro.tanino at hds.com>
     HITACHI DATA SYSTEMS
     c/o Red Hat, 314 Littleton Road, Westford, MA 01886
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