openstack/openstack-manuals
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Global Cinder setting not seen by group conf

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This patch documents how to configure Fiber Channel configuration
groups with copy image to volume multipathing option. Since
LVM doesn't support multipath I've used HP 3PAR and EMC as examples.

Change-Id: I3491046d0bd79a27df7c67472048fefa5d9a3f8e
Closes-Bug: #1326571
This commit is contained in:
Michael Denny 2015-06-25 15:38:51 -07:00 committed by Andreas Jaeger
parent bed55e680d
commit 6d98a7d772
2 changed files with 35 additions and 0 deletions
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20
doc/admin-guide-cloud-rst/source/blockstorage_multi_backend.rst
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@ -77,6 +77,26 @@ The capacity filter scheduler is enabled by default. The next section
provides more information. In addition, this example presents a
``lvmdriver-3`` back end.
.. note::
For Fiber Channel drivers that support multipath, the configuration group
requires the ``use_multipath_for_image_xfer=true`` option. In
the example below, you can see details for HP 3PAR and EMC Fiber
Channel drivers.
.. code-block:: ini
:linenos:
[3par]
use_multipath_for_image_xfer = true
volume_driver = cinder.volume.drivers.san.hp.hp_3par_fc.HP3PARFCDriver
volume_backend_name = 3parfc
[emc]
use_multipath_for_image_xfer = true
volume_driver = cinder.volume.drivers.emc.emc_smis_fc.EMCSMISFCDriver
volume_backend_name = emcfc
**Configure Block Storage scheduler multi back end**
You must enable the `filter_scheduler` option to use

15
doc/admin-guide-cloud/blockstorage/section_multi_backend.xml
View File

@ -76,6 +76,21 @@ volume_backend_name=LVM_iSCSI_b</programlisting>
scheduler is enabled by default. The next section provides
more information. In addition, this example presents a
<literal>lvmdriver-3</literal> back end.</para>
<note>
<para>For Fiber Channel drivers that support multipath, the configuration group
requires the <literal>use_multipath_for_image_xfer=true</literal> option.
In the example below, you can see details for HP 3PAR and EMC Fiber Channel
drivers.</para>
<programlisting language="ini">[3par]
use_multipath_for_image_xfer = true
volume_driver = cinder.volume.drivers.san.hp.hp_3par_fc.HP3PARFCDriver
volume_backend_name = 3parfc
[emc]
use_multipath_for_image_xfer = true
volume_driver = cinder.volume.drivers.emc.emc_smis_fc.EMCSMISFCDriver
volume_backend_name = emcfc</programlisting>
</note>
</simplesect>
<simplesect>
<title>Configure Block Storage scheduler multi back