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Merge "Fix dedup/compression description in doc"

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Jenkins 2017-04-07 19:31:14 +00:00 committed by Gerrit Code Review
parent d9f2f59539 832712f2dc
commit eaa22371cb
1 changed files with 18 additions and 12 deletions
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doc/source/devref/capabilities_and_extra_specs.rst
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@ -96,21 +96,27 @@ can be used verbatim as extra_specs in share types used to create shares.
* `dedupe` - indicates that a backend/pool can provide shares using some * `dedupe` - indicates that a backend/pool can provide shares using some
deduplication technology. The default value of the dedupe capability (if a deduplication technology. The default value of the dedupe capability (if a
driver doesn't report it) is False. Drivers cannot report to the scheduler driver doesn't report it) is False. In Liberty, drivers cannot report to the
that they support both dedupe and non-deduped share. For each pool it's scheduler that they support both dedupe and non-deduped share. For each pool
either always on or always off. Administrators can make a share type use it's either always on or always off, even if the drivers can technically
deduplication by setting this extra-spec to '<is> True'. Administrators can support both dedupe and non-deduped in a pool. Since Mitaka, the logic is
prevent a share type from using deduplication by setting this extra-spec to changed to allow a driver to report dedupe=[True, False] if it can support
'<is> False'. Added in Liberty. both dedupe and non-deduped in a pool. Administrators can make a share type
use deduplication by setting this extra-spec to '<is> True'. Administrators
can prevent a share type from using deduplication by setting this extra-spec
to '<is> False'. Added in Liberty.
* `compression` - indicates that a backend/pool can provide shares using some * `compression` - indicates that a backend/pool can provide shares using some
compression technology. The default value of the compression capability (if a compression technology. The default value of the compression capability (if a
driver doesn't report it) is False. Drivers cannot report to the scheduler driver doesn't report it) is False. In Liberty, drivers cannot report to the
that they support both compression and non-compression. For each pool it's scheduler that they support both compression and non-compression. For each
either always on or always off. Administrators can make a share type use pool it's either always on or always off, even if the drivers can technically
compression by setting this extra-spec to '<is> True'. Administrators can support both compression and non-compression in a pool. Since Mitaka, the
prevent a share type from using compression by setting this extra-spec to logic is changed to allow a driver to report compression=[True, False] if it
'<is> False'. Added in Liberty. can support both compression and non-compression in a pool. Administrators
can make a share type use compression by setting this extra-spec to
'<is> True'. Administrators can prevent a share type from using compression
by setting this extra-spec to '<is> False'. Added in Liberty.
* `thin_provisioning` - shares will not be space guaranteed and * `thin_provisioning` - shares will not be space guaranteed and
overprovisioning will be enabled. This capability defaults to False. overprovisioning will be enabled. This capability defaults to False.