0524ab8fc2
Share Migration allows a share to be migrated from one host#pool to another host#pool through the "manila migrate <share> <host#pool>" command. It first calls the driver to perform it in an optimized way if possible. If the driver returns that it did not migrate, it performs a generic migration. A new field has been added to "shares" table: task_state, which tracks migration status. For driver migration, the method migrate_share in driver base class should be overridden. For generic migration, drivers may use new config options to achieve the necessary configuration: - migration_mounting_backend_ip: If backend has additional exports IP for admin network, specify it here. - migration_data_copy_node_ip: IP of entity performing migration between backends, such as manila node or data copy service node. This may not apply for DHSS = true drivers. - migration_protocol_mount_command: specify mount command with protocol and additional parameters. Advisable to restrict protocols per backend. Defaults to "mount -t <share_proto>". If additional customization is needed, drivers may override certain methods: - _mount_share: return the mount command. - _umount_share: return the umount command. - _get_access_rule_for_data_copy: return an access rule with the IP address which will allow the manila node or data copy node to mount the share after added permission through allow-access API command. Change-Id: I8dde892cb7c0180b2b56d8c7d680dfe2320c2ec7 Implements: blueprint share-migration |
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| .. | ||
| migrations | ||
| sqlalchemy | ||
| __init__.py | ||
| api.py | ||
| base.py | ||
| migration.py | ||