[PATCH proxmox-backup 5/6] datastore: open datastores with WriteNonExpanding instead of Write

[Robert Obkircher <r.obkircher@proxmox.com>]

Allow reclaim and garbage-collection jobs when the GarbageCollection
maintenance mode is active. Only include the most important operations
for now. Others, such as set_backup_owner and group/namespace moves,
could be reasonably supported as well.

Signed-off-by: Robert Obkircher <r.obkircher@proxmox.com>
---
 src/api2/admin/datastore.rs     | 12 ++++++------
 src/api2/admin/namespace.rs     |  2 +-
 src/bin/proxmox-backup-proxy.rs |  2 +-
 src/server/prune_job.rs         |  2 +-
 4 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/src/api2/admin/datastore.rs b/src/api2/admin/datastore.rs
index 3cbdd8922..a08531e41 100644
--- a/src/api2/admin/datastore.rs
+++ b/src/api2/admin/datastore.rs
@@ -253,7 +253,7 @@ pub async fn delete_group(
             &auth_id,
             PRIV_DATASTORE_MODIFY,
             PRIV_DATASTORE_PRUNE,
-            Operation::Write,
+            Operation::WriteNonExpanding,
             &group,
         )?;
 
@@ -463,7 +463,7 @@ pub async fn delete_snapshot(
             &auth_id,
             PRIV_DATASTORE_MODIFY,
             PRIV_DATASTORE_PRUNE,
-            Operation::Write,
+            Operation::WriteNonExpanding,
             &backup_dir.group,
         )?;
 
@@ -1002,7 +1002,7 @@ pub fn prune(
         &auth_id,
         PRIV_DATASTORE_MODIFY,
         PRIV_DATASTORE_PRUNE,
-        Operation::Write,
+        Operation::WriteNonExpanding,
         &group,
     )?;
 
@@ -1174,7 +1174,7 @@ pub fn prune_datastore(
         true,
     )?;
 
-    let datastore = DataStore::lookup_datastore(lookup_with(&store, Operation::Write))?;
+    let datastore = DataStore::lookup_datastore(lookup_with(&store, Operation::WriteNonExpanding))?;
     let ns = prune_options.ns.clone().unwrap_or_default();
     let worker_id = format!("{store}:{ns}");
 
@@ -1212,7 +1212,7 @@ pub fn start_garbage_collection(
     _info: &ApiMethod,
     rpcenv: &mut dyn RpcEnvironment,
 ) -> Result<Value, Error> {
-    let datastore = DataStore::lookup_datastore(lookup_with(&store, Operation::Write))?;
+    let datastore = DataStore::lookup_datastore(lookup_with(&store, Operation::WriteNonExpanding))?;
     let auth_id: Authid = rpcenv.get_auth_id().unwrap().parse()?;
 
     let job = Job::new("garbage_collection", &store)
@@ -2307,7 +2307,7 @@ pub async fn set_protection(
             &auth_id,
             PRIV_DATASTORE_MODIFY,
             PRIV_DATASTORE_BACKUP,
-            Operation::Write,
+            Operation::WriteNonExpanding,
             &backup_dir.group,
         )?;
 
diff --git a/src/api2/admin/namespace.rs b/src/api2/admin/namespace.rs
index 19e1e8cd0..10ac69259 100644
--- a/src/api2/admin/namespace.rs
+++ b/src/api2/admin/namespace.rs
@@ -168,7 +168,7 @@ pub fn delete_namespace(
 
     check_ns_modification_privs(&store, &ns, &auth_id)?;
 
-    let lookup = crate::tools::lookup_with(&store, Operation::Write);
+    let lookup = crate::tools::lookup_with(&store, Operation::WriteNonExpanding);
     let datastore = DataStore::lookup_datastore(lookup)?;
 
     let (removed_all, stats) = datastore.remove_namespace_recursive(&ns, delete_groups)?;
diff --git a/src/bin/proxmox-backup-proxy.rs b/src/bin/proxmox-backup-proxy.rs
index b372f779e..ec5f24efb 100644
--- a/src/bin/proxmox-backup-proxy.rs
+++ b/src/bin/proxmox-backup-proxy.rs
@@ -598,7 +598,7 @@ async fn schedule_datastore_garbage_collection() {
             Err(_) => continue, // could not get lock
         };
 
-        let lookup = lookup_with(&store, Operation::Write);
+        let lookup = lookup_with(&store, Operation::WriteNonExpanding);
         let datastore = match DataStore::lookup_datastore(lookup) {
             Ok(datastore) => datastore,
             Err(err) => {
diff --git a/src/server/prune_job.rs b/src/server/prune_job.rs
index 03661127e..aa6e4e73e 100644
--- a/src/server/prune_job.rs
+++ b/src/server/prune_job.rs
@@ -133,7 +133,7 @@ pub fn do_prune_job(
     auth_id: &Authid,
     schedule: Option<String>,
 ) -> Result<String, Error> {
-    let lookup = crate::tools::lookup_with(&store, Operation::Write);
+    let lookup = crate::tools::lookup_with(&store, Operation::WriteNonExpanding);
     let datastore = DataStore::lookup_datastore(lookup)?;
 
     let worker_type = job.jobtype().to_string();
-- 
2.47.3