[PATCH proxmox 1/3] pbs-api-types: add datastore operation variant for reclaiming storage

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

The Reclaim variant will be used for Write operations that should be
allowed even when storage is almost full.

Signed-off-by: Robert Obkircher <r.obkircher@proxmox.com>
---
 pbs-api-types/src/maintenance.rs | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/pbs-api-types/src/maintenance.rs b/pbs-api-types/src/maintenance.rs
index fc7d240d..8a37756a 100644
--- a/pbs-api-types/src/maintenance.rs
+++ b/pbs-api-types/src/maintenance.rs
@@ -25,14 +25,16 @@ pub const MAINTENANCE_MESSAGE_SCHEMA: Schema =
 pub enum Operation {
     /// for any read operation like backup restore or RRD metric collection
     Read,
-    /// for any write/delete operation, like backup create or GC
+    /// for any read/write/delete operation, like backup create
     Write,
+    /// for read/write/delete operations that reduce or maintain
+    /// storage usage, like GC or prune.
+    Reclaim,
     /// for any purely logical operation on the in-memory state of the datastore, e.g., to check if
     /// some mutex could be locked (e.g., GC already running?)
     ///
     /// NOTE: one must *not* do any IO operations when only helding this Op state
     Lookup,
-    // GarbageCollect or Delete?
 }
 
 #[api]
@@ -110,7 +112,9 @@ impl MaintenanceMode {
             bail!("offline maintenance mode: {}", message);
         } else if self.ty == MaintenanceType::S3Refresh {
             bail!("S3 refresh maintenance mode: {}", message);
-        } else if self.ty == MaintenanceType::ReadOnly && Operation::Write == operation {
+        } else if self.ty == MaintenanceType::ReadOnly
+            && matches!(operation, Operation::Write | Operation::Reclaim)
+        {
             bail!("read-only maintenance mode: {}", message);
         }
         Ok(())
-- 
2.47.3