[PATCH proxmox-backup v2 08/14] datastore: cleanup persisted statistics during datastore destruction

[Christian Ebner <c.ebner@proxmox.com>]

Handle the statistics json file when removing a datastore with its
contents and assure cleanup does not fail if the file is missing.

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
---
 pbs-datastore/src/datastore.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pbs-datastore/src/datastore.rs b/pbs-datastore/src/datastore.rs
index 420221585..941e74437 100644
--- a/pbs-datastore/src/datastore.rs
+++ b/pbs-datastore/src/datastore.rs
@@ -3064,6 +3064,12 @@ impl DataStore {
                         ok = false;
                     }
                 }
+                if let Err(err) = std::fs::remove_file(base.join(DATASTORE_STATISTICS_FILENAME)) {
+                    if err.kind() != io::ErrorKind::NotFound {
+                        warn!("failed to remove file '{DATASTORE_STATISTICS_FILENAME}': {err}");
+                        ok = false;
+                    }
+                }
             }
 
             if let (_backend, Some(s3_client)) =
-- 
2.47.3