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Jay S. Bryant 0395353c4b Move config-reference to configuration

It was discovered today that the 'config-reference' directory
was supposed to have been renamed to 'configuration'.  The doc
team was expecting it to be at that location so that they could
automatically link to it from contributor/index.html .

This patch just moves the directory.  I am going to be submitting
a subsequent patch that properly sets out the framework for the
additional directories so that we don't have addition problems
in the future.

Change-Id: I6729aaf4593a0b089277f6d7d0aa50fee3ca340f

2017-07-18 13:10:25 -05:00

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LVM

The default volume back end uses local volumes managed by LVM.

This driver supports different transport protocols to attach volumes, currently iSCSI and iSER.

Set the following in your cinder.conf configuration file, and use the following options to configure for iSCSI transport:

volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver
iscsi_protocol = iscsi

Use the following options to configure for the iSER transport:

volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver
iscsi_protocol = iser

Caution

When extending an existing volume which has a linked snapshot, the related logical volume is deactivated. This logical volume is automatically reactivated unless auto_activation_volume_list is defined in LVM configuration file lvm.conf. See the lvm.conf file for more information.

If auto activated volumes are restricted, then include the cinder volume group into this list:

auto_activation_volume_list = [ "existingVG", "cinder-volumes" ]

This note does not apply for thinly provisioned volumes because they do not need to be deactivated.

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LVM

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