Contents
Share snapshots¶
The Shared File Systems service provides mechanism of snapshots to help users to restore theirs own data. Use manila snapshot-create for it.
To export a snapshot, you can create shares from it, then mount new share to instance and then directly copy files from attached share into archive.
To import snapshot, create a new share with appropriate size, attach it to instance and then copy file from archive to attached file system.
Note
You cannot delete share cannot while it has saved dependent snapshots.
Create a snapshot from the share:
$ manila snapshot-create Share1 --name Snapshot1 --description "Snapshot of Share1"
+-------------+--------------------------------------+
| Property | Value |
+-------------+--------------------------------------+
| status | creating |
| share_id | aca648eb-8c03-4394-a5cc-755066b7eb66 |
| name | Snapshot1 |
| created_at | 2015-09-25T05:27:38.862040 |
| share_proto | NFS |
| id | 962e8126-35c3-47bb-8c00-f0ee37f42ddd |
| size | 1 |
| share_size | 1 |
| description | Snapshot of Share1 |
+-------------+--------------------------------------+
Update name or description of a snapshot if it is needed:
$ manila snapshot-rename Snapshot1 Snapshot_1 --description "Snapshot of Share1. Updated."
Check that status of a snapshot is available:
$ manila snapshot-show Snapshot1
+-------------+--------------------------------------+
| Property | Value |
+-------------+--------------------------------------+
| status | available |
| share_id | aca648eb-8c03-4394-a5cc-755066b7eb66 |
| name | Snapshot1 |
| created_at | 2015-09-25T05:27:38.000000 |
| share_proto | NFS |
| id | 962e8126-35c3-47bb-8c00-f0ee37f42ddd |
| size | 1 |
| share_size | 1 |
| description | Snapshot of Share1 |
+-------------+--------------------------------------+
To restore your data from snapshot, use manila create with key --snapshot-id. This creates a new share from exiting snapshot. Create a share from a snapshot and check whether it is available:
$ manila create nfs 1 --name Share2 --metadata source=snapshot --description "Share from a snapshot." --snapshot-id 962e8126-35c3-47bb-8c00-f0ee37f42ddd
+-----------------------------+--------------------------------------+
| Property | Value |
+-----------------------------+--------------------------------------+
| status | None |
| share_type_name | default |
| description | Share from a snapshot. |
| availability_zone | None |
| share_network_id | None |
| export_locations | [] |
| share_server_id | None |
| host | None |
| snapshot_id | 962e8126-35c3-47bb-8c00-f0ee37f42ddd |
| is_public | False |
| task_state | None |
| snapshot_support | True |
| id | b6b0617c-ea51-4450-848e-e7cff69238c7 |
| size | 1 |
| name | Share2 |
| share_type | c0086582-30a6-4060-b096-a42ec9d66b86 |
| created_at | 2015-09-25T06:25:50.240417 |
| export_location | None |
| share_proto | NFS |
| consistency_group_id | None |
| source_cgsnapshot_member_id | None |
| project_id | 20787a7ba11946adad976463b57d8a2f |
| metadata | {u'source': u'snapshot'} |
+-----------------------------+--------------------------------------+
$ manila show Share2
+-----------------------------+-------------------------------------------+
| Property | Value |
+-----------------------------+-------------------------------------------+
| status | available |
| share_type_name | default |
| description | Share from a snapshot. |
| availability_zone | nova |
| share_network_id | 5c3cbabb-f4da-465f-bc7f-fadbe047b85a |
| export_locations | 10.254.0.3:/shares/share-1dc2a471-3d47-...|
| share_server_id | 41b7829d-7f6b-4c96-aea5-d106c2959961 |
| host | manila@generic1#GENERIC1 |
| snapshot_id | 962e8126-35c3-47bb-8c00-f0ee37f42ddd |
| is_public | False |
| task_state | None |
| snapshot_support | True |
| id | b6b0617c-ea51-4450-848e-e7cff69238c7 |
| size | 1 |
| name | Share2 |
| share_type | c0086582-30a6-4060-b096-a42ec9d66b86 |
| created_at | 2015-09-25T06:25:50.000000 |
| share_proto | NFS |
| consistency_group_id | None |
| source_cgsnapshot_member_id | None |
| project_id | 20787a7ba11946adad976463b57d8a2f |
| metadata | {u'source': u'snapshot'} |
+-----------------------------+-------------------------------------------+
You can soft-delete a snapshot using manila snapshot-delete <snapshot_name_or_ID>. If a snapshot is in busy state and during deleting got the error_deleting status, administrator can force-delete it or explicitly reset the state. Use snapshot-reset-state [–state <state>] <snapshot> to update the state of a snapshot explicitly. A valid value of a status are available, error, creating, deleting, error_deleting. If no state is provided, available will be used.
Use manila snapshot-force-delete <snapshot> to force-delete a specified share snapshot in any state.
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