openstack/glance-specs
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Introduce db sync --check feature

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Lite-spec for a dry-run option for db upgrades in glance-manage.

Change-Id: Ie1e2fec2361765ddf23da897abcf0e12e682612e
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Steve Lewis 2017-02-21 13:22:38 -05:00 committed by Steve Lewis (stevelle)
parent 0522238825
commit 9dcdb915c0
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specs/pike/approved/glance/lite-specs.rst
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@ -103,5 +103,35 @@ Remove Glare code from the Glance repository
End of `Remove Glare code from the Glance repository`
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Introduce db sync --check feature
---------------------------------
:problem: It is very hard for automation of deploy and upgrade operations to
know if there are db migrations pending. It requires the automation
to know what the latest version is, and compare that to the output
of a command to check the current version, then interpret the
potential difference somehow.
:solution: Similar to the linked feature added to Keystone's manage command,
Glance should support an operation which enumerates any outstanding
db upgrade operations and provide a distinct return code based on
that status. Each expand, migrate, and contract operation required
to upgrade the db should be listed in the proper order of execution
in the response. For consistency with Keystone, this may be
implemented by using a ``--check`` option. When this option is
present no db upgrades would be performed but potential operations
would be reported, acting similar to the pattern of a dry-run.
:impacts: Introduces new option to the db sync operation in glance-manage.
:timeline: Expected to be merged within the Pike time frame.
:link: https://bugs.launchpad.net/keystone/+bug/1642212
:assignee: Alexander Bashmakov
End of `Introduce db sync --check feature`
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