[pbs-devel] [PATCH proxmox-backup v8 21/23] api: node: allow creation of removable datastore through directory endpoint

[Christian Ebner]

nits inline

On 4/19/24 17:56, Hannes Laimer wrote:
> Signed-off-by: Hannes Laimer <h.laimer at proxmox.com>
> ---
>   src/api2/node/disks/directory.rs | 67 +++++++++++++++++++++++++++++++-
>   1 file changed, 65 insertions(+), 2 deletions(-)
> 
> diff --git a/src/api2/node/disks/directory.rs b/src/api2/node/disks/directory.rs
> index 9f1112a9..a34ed676 100644
> --- a/src/api2/node/disks/directory.rs
> +++ b/src/api2/node/disks/directory.rs
> @@ -123,6 +123,11 @@ pub fn list_datastore_mounts() -> Result<Vec<DatastoreMountInfo>, Error> {
>                   type: bool,
>                   optional: true,
>               },
> +            "removable-datastore": {
> +                description: "The the added datastore is removable.",
> +                type: bool,
> +                optional: true,
> +            },
>               filesystem: {
>                   type: FileSystemType,
>                   optional: true,
> @@ -136,11 +141,14 @@ pub fn list_datastore_mounts() -> Result<Vec<DatastoreMountInfo>, Error> {
>           permission: &Permission::Privilege(&["system", "disks"], PRIV_SYS_MODIFY, false),
>       },
>   )]
> -/// Create a Filesystem on an unused disk. Will be mounted under `/mnt/datastore/<name>`.
> +/// Create a Filesystem on an unused disk. Will be mounted under `/mnt/datastore/<name>`, removable
> +/// datastores will have `/mnt/removable_datastore/<uuid>/<name>` as their path and will be mounted
> +/// under `/mnt/removable_datastore/<uuid>`
>   pub fn create_datastore_disk(
>       name: String,
>       disk: String,
>       add_datastore: Option<bool>,
> +    removable_datastore: Option<bool>,
>       filesystem: Option<FileSystemType>,
>       rpcenv: &mut dyn RpcEnvironment,
>   ) -> Result<String, Error> {
> @@ -154,8 +162,63 @@ pub fn create_datastore_disk(
>           bail!("disk '{}' is already in use.", disk);
>       }
>   
> -    let mount_point = format!("{}{}", BASE_MOUNT_DIR, &name);
> +    if let (Some(true), Some(true)) = (add_datastore, removable_datastore) {
> +        let upid_str = WorkerTask::new_thread(
> +            "dircreate",
> +            Some(name.clone()),
> +            auth_id,
> +            to_stdout,
> +            move |worker| {
> +                task_log!(
> +                    worker,
> +                    "create removable datastore '{}' on disk {}",
> +                    name,
> +                    disk
> +                );

please inline `name` and `disk`

> +
> +                let filesystem = filesystem.unwrap_or(FileSystemType::Ext4);
> +
> +                let manager = DiskManage::new();
> +
> +                let disk = manager.disk_by_name(&disk)?;
> +
> +                let partition = create_single_linux_partition(&disk)?;
> +                create_file_system(&partition, filesystem)?;
> +
> +                let uuid = get_fs_uuid(&partition)?;
> +                let store_path = format!(
> +                    "{}/{uuid}/{name}",
> +                    pbs_api_types::REMOVABLE_DATASTORE_MOUNT_DIR
> +                );
> +
> +                let lock = pbs_config::datastore::lock_config()?;
> +                let datastore: DataStoreConfig = serde_json::from_value(
> +                    json!({ "name": name, "path": store_path, "backing-device": uuid }),
> +                )?;
> +
> +                let (config, _digest) = pbs_config::datastore::config()?;
> +
> +                if config.sections.get(&datastore.name).is_some() {
> +                    bail!("datastore '{}' already exists.", datastore.name);
> +                }
> +
> +                // we don't have to check if the UUID is already in use since we just created the
> +                // fs ourself
>   
> +                crate::api2::config::datastore::do_create_datastore(
> +                    lock,
> +                    config,
> +                    datastore,
> +                    Some(&worker),
> +                )?;
> +
> +                Ok(())
> +            },
> +        )?;
> +        return Ok(upid_str);
> +    };
> +
> +    let mount_point = format!("{}{}", BASE_MOUNT_DIR, &name);

please inline `BASE_MOUNT_DIR` and `name`

>       // check if the default path exists already.
>       // bail if it is not empty or another filesystem mounted on top
>       let default_path = std::path::PathBuf::from(&mount_point);