openstack/glance-specs
Code Issues Proposed changes

Introduce db sync check feature

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

This spec is moved from /specs/untargeted/glance/lite-spec-db-sync-check.rst
to /specs/queens/implemented/glance/lite-spec-db-sync-check.rst because it was
implemented by change I1e0b02d615690f65a17b4ccfe4e4a72cc9e15ada

Change-Id: Ice1ab9657e236d969df50016a3b47a893e6aff0c
This commit is contained in:
bhagyashris 2018-03-06 13:03:02 +05:30
parent 449947b209
commit f8736b39af
3 changed files with 32 additions and 26 deletions
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Lite Spec: 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: Open
==========================================
Spec Lite: 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 user friendly message 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.
This may be implemented by using a ``glance-manage db 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: Queens RC-1
:link: https://bugs.launchpad.net/keystone/+bug/1642212
:reviewers: rosmaita, abhishekk, jokke
:assignee: bhagyashris