openstack/openstack-manuals
Code Issues Proposed changes

Update VNX doc for Ocata.

Browse Source 
* Update driver entry.
* Add asynchronous migration doc.

Change-Id: I1840b57c89b905e412c1179d3d155df53e42fc8b
Closes-bug: #1651890
This commit is contained in:
Peter Wang 2017-02-17 04:56:44 -05:00 committed by Alexandra Settle
parent 82fe1ac38a
commit 05e6655bb8
1 changed files with 24 additions and 11 deletions

35
doc/config-reference/source/block-storage/drivers/emc-vnx-driver.rst

@ -1,6 +1,6 @@
==============
EMC VNX driver
==============
===================
Dell EMC VNX driver
===================
EMC VNX driver interacts with configured VNX array. It supports
both iSCSI and FC protocol.
@ -38,6 +38,7 @@ Supported operations
- Create a cloned consistency group.
- Create a consistency group from consistency group snapshots.
- Replication v2.1 support.
- Generic Group support.
Preparation
~~~~~~~~~~~
@ -141,7 +142,7 @@ Set ``storage_protocol = iscsi`` if iSCSI protocol is used.
san_login = sysadmin
san_password = sysadmin
naviseccli_path = /opt/Navisphere/bin/naviseccli
volume_driver = cinder.volume.drivers.emc.vnx.driver.EMCVNXDriver
volume_driver = cinder.volume.drivers.dell_emc.vnx.driver.VNXDriver
initiator_auto_registration = True
storage_protocol = fc
@ -161,7 +162,7 @@ Set ``storage_protocol = iscsi`` if iSCSI protocol is used.
san_ip = 10.10.72.41
storage_vnx_security_file_dir = /etc/secfile/array1
naviseccli_path = /opt/Navisphere/bin/naviseccli
volume_driver = cinder.volume.drivers.emc.vnx.driver.EMCVNXDriver
volume_driver = cinder.volume.drivers.dell_emc.vnx.driver.VNXDriver
initiator_auto_registration = True
storage_protocol = fc
@ -171,7 +172,7 @@ Set ``storage_protocol = iscsi`` if iSCSI protocol is used.
san_login = username
san_password = password
naviseccli_path = /opt/Navisphere/bin/naviseccli
volume_driver = cinder.volume.drivers.emc.vnx.driver.EMCVNXDriver
volume_driver = cinder.volume.drivers.dell_emc.vnx.driver.VNXDriver
initiator_auto_registration = True
storage_protocol = fc
@ -235,14 +236,14 @@ Specify the absolute path to your naviseccli:
.. code-block:: ini
volume_driver = cinder.volume.drivers.emc.vnx.driver.EMCVNXDriver
volume_driver = cinder.volume.drivers.dell_emc.vnx.driver.VNXDriver
storage_protocol = fc
- For iSCSI Driver, add the following option:
.. code-block:: ini
volume_driver = cinder.volume.drivers.emc.vnx.driver.EMCVNXDriver
volume_driver = cinder.volume.drivers.dell_emc.vnx.driver.VNXDriver
storage_protocol = iscsi
Optional configurations
@ -616,9 +617,8 @@ Snap copy
VNX driver supports snap copy which accelerates the process for
creating a copied volume.
By default, the driver will do full data copy when creating a
volume from a snapshot or cloning a volume. This is time-consuming, especially
for large volumes. When snap copy is used, driver creates a
By default, the driver will use `asynchronous migration support`_, which will
start a VNX migration session. When snap copy is used, driver creates a
snapshot and mounts it as a volume for the 2 kinds of operations which will be
instant even for large volumes.
@ -768,6 +768,19 @@ And then create volume with above volume type:
For more information on how to configure, please refer to: `MirrorView-Knowledgebook:-Releases-30-–-33 <https://support.emc.com/docu32906_MirrorView-Knowledgebook:-Releases-30-%E2%80%93-33---A-Detailed-Review.pdf?language=en_US>`_
Asynchronous migration support
------------------------------
VNX Cinder driver now supports asynchronous migration during volume cloning.
The driver now using asynchronous migration when creating a volume from source
as the default cloning method. The driver will return immediately after the
migration session starts on the VNX, which dramatically reduces the time before
a volume is available for use.
To disable this feature, user can add ``--metadata async_migrate=False`` when
creating new volume from source.
Best practice
~~~~~~~~~~~~~