Add a release note for groups

Added a release note for drivers that have added consistency group
capability to generic volume groups.

Change-Id: Icb55b290667d4e04e428d9c683cb19eb24b7c0ec
This commit is contained in:
xing-yang 2017-04-12 03:48:21 -04:00
parent 14975feee1
commit aa277fe1b6
1 changed files with 14 additions and 0 deletions

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---
prelude: >
Drivers supporting consistent group snapshot in generic volume groups
reports "consistent_group_snapshot_enabled = True" instead of
"consistencygroup_support = True". As a result, a spec such as
"consistencygroup_support: '<is> True'" in either group type or
volume type will cause the scheduler not to choose the backend
that does not report "consistencygroup_support = True".
In order to create a generic volume group that supports consistent
group snapshot, "consistent_group_snapshot_enable: '<is> True'"
should be set in the group type specs and volume type extra specs,
and "consistencygroup_support: '<is> True'" should not be set
in group type spec and volume type extra specs.