[pbs-devel] [PATCH proxmox-backup v14 07/25] api: add check for nested datastores on creation

[Hannes Laimer]

Signed-off-by: Hannes Laimer <h.laimer at proxmox.com>
---
* new in v14, and not removable datastore specific

 src/api2/config/datastore.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/api2/config/datastore.rs b/src/api2/config/datastore.rs
index 420f8ddd0..75e1a1a56 100644
--- a/src/api2/config/datastore.rs
+++ b/src/api2/config/datastore.rs
@@ -81,6 +81,20 @@ pub(crate) fn do_create_datastore(
         bail!("cannot create datastore in root path");
     }
 
+    for store in config.convert_to_typed_array::<DataStoreConfig>("datastore")? {
+        if store.backing_device != datastore.backing_device {
+            continue;
+        }
+        if store.path.starts_with(&datastore.path) || datastore.path.starts_with(&store.path) {
+            param_bail!(
+                "path",
+                "nested datastores not allowed: '{}' already in '{}'",
+                store.name,
+                store.path
+            );
+        }
+    }
+
     let need_unmount = datastore.backing_device.is_some();
     if need_unmount {
         do_mount_device(datastore.clone())?;
-- 
2.39.5