Unlock OMAP on exit.

Fixes #598

Signed-off-by: Gil Bregman <gbregman@il.ibm.com>

control/server.py

@@ -84,6 +84,7 @@ def __init__(self, config: GatewayConfig):
         self.group_id = 0
         self.monitor_client = '/usr/bin/ceph-nvmeof-monitor-client'
         self.omap_state = None
+        self.omap_lock = None
 
         self.name = self.config.get("gateway", "name")
         if not self.name:
@@ -120,7 +121,7 @@ def __exit__(self, exc_type, exc_value, traceback):
             self._stop_discovery()
 
         if self.omap_state:
-            self.omap_state.cleanup_omap()
+            self.omap_state.cleanup_omap(self.omap_lock)
             self.omap_state = None
 
         if logger:
@@ -172,8 +173,8 @@ def serve(self):
 
         # Register service implementation with server
         gateway_state = GatewayStateHandler(self.config, local_state, omap_state, self.gateway_rpc_caller, f"gateway-{self.name}")
-        omap_lock = OmapLock(omap_state, gateway_state, self.rpc_lock)
-        self.gateway_rpc = GatewayService(self.config, gateway_state, self.rpc_lock, omap_lock, self.group_id, self.spdk_rpc_client, self.ceph_utils)
+        self.omap_lock = OmapLock(omap_state, gateway_state, self.rpc_lock)
+        self.gateway_rpc = GatewayService(self.config, gateway_state, self.rpc_lock, self.omap_lock, self.group_id, self.spdk_rpc_client, self.ceph_utils)
         self.server = self._grpc_server(self._gateway_address())
         pb2_grpc.add_GatewayServicer_to_server(self.gateway_rpc, self.server)
 

control/state.py

@@ -543,7 +543,7 @@ def _watcher_callback(notify_id, notifier_id, watch_id, data):
         else:
             self.logger.info(f"Watch already exists.")
 
-    def cleanup_omap(self):
+    def cleanup_omap(self, omap_lock = None):
         self.logger.info(f"Cleanup OMAP on exit ({self.id_text})")
         if self.watch:
             try:
@@ -552,6 +552,11 @@ def cleanup_omap(self):
                 self.watch = None
             except Exception:
                 pass
+        if omap_lock and omap_lock.omap_file_lock_duration > 0:
+            try:
+                omap_lock.unlock_omap()
+            except Exceprion:
+                pass
         if self.ioctx:
             try:
                 self.ioctx.close()