[pbs-devel] [PATCH proxmox-backup v12 23/26] 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 | 57 +++++++++++++++++++++++++++++---
 1 file changed, 52 insertions(+), 5 deletions(-)

diff --git a/src/api2/node/disks/directory.rs b/src/api2/node/disks/directory.rs
index c0c53d84..cd816414 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> {
                 description: "Configure a datastore using the directory.",
                 type: bool,
                 optional: true,
+                default: false,
+            },
+            "removable-datastore": {
+                description: "The added datastore is removable.",
+                type: bool,
             },
             filesystem: {
                 type: FileSystemType,
@@ -141,7 +146,8 @@ pub fn list_datastore_mounts() -> Result<Vec<DatastoreMountInfo>, Error> {
 pub fn create_datastore_disk(
     name: String,
     disk: String,
-    add_datastore: Option<bool>,
+    add_datastore: bool,
+    removable_datastore: bool,
     filesystem: Option<FileSystemType>,
     rpcenv: &mut dyn RpcEnvironment,
 ) -> Result<String, Error> {
@@ -155,8 +161,49 @@ pub fn create_datastore_disk(
         bail!("disk '{}' is already in use.", disk);
     }
 
-    let mount_point = format!("{}{}", BASE_MOUNT_DIR, &name);
+    if add_datastore && removable_datastore {
+        let upid_str = WorkerTask::new_thread(
+            "dircreate",
+            Some(name.clone()),
+            auth_id,
+            to_stdout,
+            move |_worker| {
+                info!("create removable datastore '{name}' on disk {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 lock = pbs_config::datastore::lock_config()?;
+                let datastore: DataStoreConfig = serde_json::from_value(
+                    json!({ "name": name, "path": name, "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)?;
+
+                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);
@@ -183,7 +230,6 @@ pub fn create_datastore_disk(
         move |_worker| {
             info!("create datastore '{name}' on disk {disk}");
 
-            let add_datastore = add_datastore.unwrap_or(false);
             let filesystem = filesystem.unwrap_or(FileSystemType::Ext4);
 
             let manager = DiskManage::new();
@@ -246,8 +292,9 @@ pub fn delete_datastore_disk(name: String) -> Result<(), Error> {
     // path of datastore cannot be changed
     let (config, _) = pbs_config::datastore::config()?;
     let datastores: Vec<DataStoreConfig> = config.convert_to_typed_array("datastore")?;
-    let conflicting_datastore: Option<DataStoreConfig> =
-        datastores.into_iter().find(|ds| ds.absolute_path() == path);
+    let conflicting_datastore: Option<DataStoreConfig> = datastores.into_iter().find(|ds| {
+        ds.absolute_path() == path || ds.get_mount_point().map_or(false, |mp| mp == path)
+    });
 
     if let Some(conflicting_datastore) = conflicting_datastore {
         bail!(
-- 
2.39.2