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6 changes: 3 additions & 3 deletions docs/advanced/csidriver.md
Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,7 @@ These validated CSI drivers have the following capabilities:

| Storage Solution | VM Image | VM Rook Disk | VM Data Disk | Volume Export To VM Image | VM Template Generator | VM Live Migration | VM Snapshot | VM Backup |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Longhorn v2 Data Engine | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |✖ | ✖ |
| Longhorn v2 Data Engine | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| LVM | ✔ | ✔ | ✔ | ✔ | ✔ | ✖ | ✔ | ✖ |
| NFS | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✖ | ✖ |
| Rook (RBD) | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✖ |
Expand Down Expand Up @@ -70,7 +70,7 @@ Before you can make use of Harvester's **Backup & Snapshot** features, you need

:::note

Backup currently only works with the Longhorn v1 Data Engine. If you are using other storage providers, you can skip the **Backup VolumeSnapshot Class Name** configuration.
Backup currently only works with the Longhorn v1 Data Engine (and V2 provided they're not the root disk). If you are using other storage providers, you can skip the **Backup VolumeSnapshot Class Name** configuration.

For more information, see [VM Backup Compatibility](https://docs.harvesterhci.io/v1.4/advanced/csidriver#vm-backup-compatibility).

Expand Down Expand Up @@ -175,7 +175,7 @@ Avoid changing the storage profile or CDI directly. Instead, allow the Harvester

### Limitations

- Backup support is currently limited to Longhorn V1 Data Engine volumes. Harvester is unable to create backups of volumes in external storage.
- Backup support is currently limited to Longhorn volumes. Harvester is unable to create backups of volumes in external storage.

- There is a limitation in the CDI which prevents Harvester from converting attached PVCs to virtual machine images. Before exporting a volume in external storage, ensure that the PVC is not attached to workloads. This prevents the resulting image from getting stuck in the *Exporting* state.

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5 changes: 1 addition & 4 deletions docs/advanced/longhorn-v2.md
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Expand Up @@ -33,14 +33,11 @@ Every node with an active Longhorn V2 Data Engine requires the following dedicat
The Longhorn V2 Data Engine currently does not support the following operations:

- Backing image creation and usage
- Volume cloning
- Volume encryption
- Volume expansion
- Volume expansion (TODO: check if this is still true, see https://longhorn.io/docs/1.10.0/v2-data-engine/features/volume-expansion/)

:::

- Snapshots of V2 volumes cannot be created because snapshot and restoration functionality in Harvester relies on volume cloning.

- SSDs and other non-NVMe disks are managed using the SPDK AIO bdev driver, which does not support the unmap operation. If you are using non-NVMe disks, avoid trimming the filesystem because this results in I/O errors and paused virtual machines. For example, when creating an ext4 filesystem on a Linux virtual machine, use `mkfs.ext4 -E nodiscard /dev/vdb` (assuming `/dev/vdb` is your device path). On Windows virtual machines, you can disable trimming for NTFS by running the command `fsutil behavior set disabledeletenotify NTFS 1`.

## Using the Longhorn V2 Data Engine
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2 changes: 1 addition & 1 deletion docs/vm/backup-restore.md
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Expand Up @@ -26,7 +26,7 @@ VM backups are created from the **Virtual Machines** page. The VM backup volumes

A backup target must be set up. For more information, see [Configure Backup Target](#configure-backup-target). If the backup target has not been set, you’ll be prompted with a message to do so.

Backup support is currently limited to Longhorn V1 Data Engine volumes. Harvester is unable to create backups of volumes in external storage.
Backup support is currently limited to Longhorn volumes. Harvester is unable to create backups of volumes in external storage.

:::

Expand Down