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Description of problem: snapshot data is not preserved after importing on other openstack setup. * Reproducer steps: - create volume [root@dhcp200-208 ~(keystone_admin)]# cinder create 1 --name volume_pbandark --volume-type lvm +--------------------------------+--------------------------------------+ | Property | Value | +--------------------------------+--------------------------------------+ | attachments | [] | | availability_zone | nova | | bootable | false | | consistencygroup_id | None | | created_at | 2016-08-20T22:50:23.000000 | | description | None | | encrypted | False | | id | ba87ca45-6711-4929-911a-c19fabf0e262 | | metadata | {} | | migration_status | None | | multiattach | False | | name | volume_pbandark | | os-vol-host-attr:host | None | | os-vol-mig-status-attr:migstat | None | | os-vol-mig-status-attr:name_id | None | | os-vol-tenant-attr:tenant_id | 84df9e408f454a74ac746c9e3af0abd6 | | replication_status | disabled | | size | 1 | | snapshot_id | None | | source_volid | None | | status | creating | | updated_at | None | | user_id | aa2bc39017904b7ea83b479af68ca1c7 | | volume_type | lvm | +--------------------------------+--------------------------------------+ - attach it to any instance and write some data. - take snapshot of instance - again write some data. - detach the volume - take backup with snapshot: [root@dhcp200-208 ~(keystone_admin)]# cinder backup-create ba87ca45-6711-4929-911a-c19fabf0e262 --snapshot-id f4659f2e-6cfb-4814-8733-58fe995d189e +-----------+--------------------------------------+ | Property | Value | +-----------+--------------------------------------+ | id | 7fc9d944-5fae-4777-ab05-256a7e36c169 | | name | None | | volume_id | ba87ca45-6711-4929-911a-c19fabf0e262 | +-----------+--------------------------------------+ [root@dhcp200-208 ~(keystone_admin)]# cinder backup-show 7fc9d944-5fae-4777-ab05-256a7e36c169 +-----------------------+--------------------------------------------+ | Property | Value | +-----------------------+--------------------------------------------+ | availability_zone | nova | | container | 7f/c9/7fc9d944-5fae-4777-ab05-256a7e36c169 | | created_at | 2016-08-20T22:55:29.000000 | | data_timestamp | 2016-08-20T22:52:37.000000 | | description | None | | fail_reason | None | | has_dependent_backups | False | | id | 7fc9d944-5fae-4777-ab05-256a7e36c169 | | is_incremental | False | | name | None | | object_count | 65 | | size | 1 | | snapshot_id | f4659f2e-6cfb-4814-8733-58fe995d189e | <== | status | available | | updated_at | 2016-08-20T22:56:20.000000 | | volume_id | ba87ca45-6711-4929-911a-c19fabf0e262 | <== +-----------------------+--------------------------------------------+ - export the backup: [root@dhcp200-208 ~(keystone_admin)]# cinder backup-export 7fc9d944-5fae-4777-ab05-256a7e36c169 +++ * on other openstack setup: - Import backup: [root@dell-fc430-1 ~(keystone_admin)]# cinder backup-import cinder.backup.drivers.nfs $(tr -d '\n' < metadata.txt) +----------+--------------------------------------+ | Property | Value | +----------+--------------------------------------+ | id | 7fc9d944-5fae-4777-ab05-256a7e36c169 | | name | None | +----------+--------------------------------------+ where metadata.txt is backup_url. ----- {"status": "available", "temp_snapshot_id": null, "display_name": null, "availability_zone": "nova", "deleted": false, "volume_id": "ba87ca45-6711-4929-911a-c19fabf0e262", "restore_volume_id": null, "updated_at": "2016-08-20T22:56:20Z", "host": "dhcp200-208.gsslab.pnq.redhat.com", "snapshot_id": "f4659f2e-6cfb-4814-8733-58fe995d189e", "user_id": "aa2bc39017904b7ea83b479af68ca1c7", "service_metadata": "backup", "id": "7fc9d944-5fae-4777-ab05-256a7e36c169", "size": 1, "object_count": 65, "deleted_at": null, "container": "7f/c9/7fc9d944-5fae-4777-ab05-256a7e36c169", "service": "cinder.backup.drivers.nfs", "driver_info": {}, "created_at": "2016-08-20T22:55:29Z", "display_description": null, "data_timestamp": "2016-08-20T22:52:37Z", "parent_id": null, "num_dependent_backups": 0, "fail_reason": null, "project_id": "84df9e408f454a74ac746c9e3af0abd6", "temp_volume_id": null} ----- - create volume: [root@dell-fc430-1 ~(keystone_admin)]# cinder create --name pbandark_volume_imported_with_snap 2 - restore backup: [root@dell-fc430-1 ~(keystone_admin)]# cinder backup-restore --volume 4c25e63f-893e-4c9e-bda6-a4c27cbb8e25 7fc9d944-5fae-4777-ab05-256a7e36c169 cinder lis+-------------+--------------------------------------+ | Property | Value | +-------------+--------------------------------------+ | backup_id | 7fc9d944-5fae-4777-ab05-256a7e36c169 | | volume_id | 4c25e63f-893e-4c9e-bda6-a4c27cbb8e25 | | volume_name | pbandark_volume_imported_with_snap | +-------------+--------------------------------------+ - attach volume to the instance: +--------------------------------------+-----------+------------------------------------+------+-------------+----------+--------------------------------------+ | ID | Status | Name | Size | Volume Type | Bootable | Attached to | +--------------------------------------+-----------+------------------------------------+------+-------------+----------+--------------------------------------+ | 4c25e63f-893e-4c9e-bda6-a4c27cbb8e25 | in-use | pbandark_volume_imported_with_snap | 2 | - | false | 91fb0e60-7df6-4867-aaa5-6ceb3289c152 | - The data which we written on source openstack setup after snapshot will not be available in the volume. Version-Release number of selected component (if applicable): # rpm -qa|grep -i cinder python-cinder-8.0.0-5.el7ost.noarch openstack-cinder-8.0.0-5.el7ost.noarch python-cinderclient-1.6.0-1.el7ost.noarch How reproducible: 100% Steps to Reproduce: 1. 2. 3. Actual results: snapshot data is not preserved after importing on other openstack setup. Expected results: data should be preserved Additional info:
This bugzilla has been removed from the release and needs to be reviewed for Triaging and release planning for an appropriate Target Milestone.
I've also tested this on osp12, same result. But as Eric mentioned ^ isn't a bug, backup done per snapshot point in time. Just adding a few missing steps for future reference. ---------------- "- take snapshot of instance" Typo assume he meant Cinder snapshot of volume not snapshot of instance. Both Openstacks Cinder backup_driver's must use same shared storage in his/my case NFS. This wasn't mentioned on bug but without which only metadata without volume data would be exported/imported. On both Openstack's Cinder.conf, set these two: backup_driver = cinder.backup.drivers.nfs backup_share = HOST:EXPORT_PATH Start your backup service #systemctl enable --now openstack-cinder-backup.service To export backup I used: #cinder backup-export f43efd20-44fa-4040-9fb2-ee107e46b4d1 | sed -n '/backup_url/,$ s/|.*| *\(.*\) |/\1/p' > metadata.txt -n '/backup_url/,$ s/|.*| *\(.*\) |/\1/p' > metadata.txt Copy over metadata.txt to target openstack. Import backup via: #cinder backup-import cinder.backup.drivers.nfs $(tr -d '\n' < metadata.txt)