[pbs-devel] [PATCH proxmox 1/2] rest-server: handle failure in worker task setup correctly

[Fabian Grünbichler]

if setting up a new worker fails after it has been inserted into the
WORKER_TASK_LIST, we need to clean it up instead of bubbling up the error right
away, else we "leak" the worker task and it never finishes..

Signed-off-by: Fabian Grünbichler <f.gruenbichler at proxmox.com>
---
we probably want to optimize update_active_workers as well to reduce the lock
contention there that triggers this issue in the first place..

 proxmox-rest-server/src/worker_task.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/proxmox-rest-server/src/worker_task.rs b/proxmox-rest-server/src/worker_task.rs
index 6e76c2ca..3ca93965 100644
--- a/proxmox-rest-server/src/worker_task.rs
+++ b/proxmox-rest-server/src/worker_task.rs
@@ -923,7 +923,12 @@ impl WorkerTask {
             set_worker_count(hash.len());
         }
 
-        setup.update_active_workers(Some(&upid))?;
+        let res = setup.update_active_workers(Some(&upid));
+        if res.is_err() {
+            // needed to undo the insertion into WORKER_TASK_LIST above
+            worker.log_result(&res);
+            res?
+        }
 
         Ok((worker, logger))
     }
-- 
2.39.5