doc(system restore): support backup backing image in system backup re…

…store ref: longhorn/longhorn 5085 Signed-off-by: Jack Lin <[email protected]>
longhorn · Jun 24, 2024 · fba3d13 · fba3d13
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diff --git a/...t/docs/1.7.0/advanced-resources/system-backup-restore/backup-longhorn-system.md b/...t/docs/1.7.0/advanced-resources/system-backup-restore/backup-longhorn-system.md
@@ -19,6 +19,7 @@ weight: 1
 Longhorn system backup creates a resource bundle and uploads it to the remote backup target.
 
 It includes below resources associating with the Longhorn system:
+- BackingImages
 - ClusterRoles
 - ClusterRoleBindings
 - ConfigMaps
@@ -37,8 +38,6 @@ It includes below resources associating with the Longhorn system:
 - StorageClasses
 - Volumes
 
-> **Warning:** Longhorn does not backup `BackingImages`. We will improve this part in the future. See [Restore Longhorn System - Prerequisite](../restore-longhorn-system/#prerequisite) for restoring volumes created with the backing image.
-
 > **Note:** Longhorn does not backup `Nodes`. The Longhorn manager on the target cluster is responsible for creating its own Longhorn `Node` custom resources.
 
 > **Note:**  Longhorn system backup bundle only includes resources operated by Longhorn.  

diff --git a/.../docs/1.7.0/advanced-resources/system-backup-restore/restore-longhorn-system.md b/.../docs/1.7.0/advanced-resources/system-backup-restore/restore-longhorn-system.md
@@ -41,9 +41,6 @@ You can restore the Longhorn system using Longhorn UI. Or with the `kubectl` com
 - Have a Longhorn system backup.
 
   See [Backup Longhorn System - Create Longhorn System Backup](../backup-longhorn-system#create-longhorn-system-backup) for instructions.
-- Have volume `BackingImages` available in the cluster.
-
-  In case of the `BackingImage` absence, Longhorn will skip the restoration for that `Volume` and its `PersistentVolume` and `PersistentVolumeClaim`.
 - All existing `Volumes` are detached.
 
 ### Using Longhorn UI