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

[Hannes Laimer]

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
+                );
+
+                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);
     // 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);
-- 
2.39.2