openstack/openstack-manuals
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Merge "Add doc for non-disruptive backup"

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Jenkins 2015-09-16 12:26:56 +00:00 committed by Gerrit Code Review
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24
doc/admin-guide-cloud/source/blockstorage_volume_backups.rst
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@ -14,19 +14,31 @@ in the Block Storage database.
Run this command to create a backup of a volume::
$ cinder backup-create [--incremental] VOLUME
$ cinder backup-create [--incremental] [--force] VOLUME
Where *VOLUME* is the name or ID of the volume, and ``incremental`` is
a flag that indicates whether an incremental backup should be performed.
Where *VOLUME* is the name or ID of the volume, ``incremental`` is
a flag that indicates whether an incremental backup should be performed,
and ``force`` is a flag that allows or disallows backup of a volume
when the volume is attached to an instance.
Without the ``incremental`` flag, a full backup is created by default.
With the ``incremental`` flag, an incremental backup is created.
Without the ``force`` flag, the volume will be backed up only if its
status is ``available``. With the ``force`` flag, the volume will be
backed up whether its status is ``available`` or ``in-use``. A volume
is ``in-use`` when it is attached to an instance. The backup of an
``in-use`` volume means your data is crash consistent. The ``force``
flag is False by default.
.. note::
The ``incremental`` flag is only available for block storage API v2.
You have to specify [--os-volume-api-version 2] in the **cinder**
command-line interface to use this parameter.
The ``incremental`` and ``force`` flags are only available for block
storage API v2. You have to specify [--os-volume-api-version 2] in the
**cinder** command-line interface to use this parameter.
.. note::
The ``force`` flag is new in OpenStack Liberty.
The incremental backup is based on a parent backup which is an existing
backup with the latest timestamp. The parent backup can be a full backup