Devel: shorten slightly directory cache entries

cesnet-central/deployments/fullhub.yaml

@@ -229,14 +229,17 @@ hub:
               spawner.extra_containers.append(
                 {
                     "name": "owncloud",
-                    "image": "valtri/webdav-rclone-sidecar:95629ff",
+                    "image": "valtri/webdav-rclone-sidecar:sha-ec94347",
                     "args": ["bearer_token_command=cat " + token_path],
                     "env": [
                         {"name": "WEBDAV_URL", "value": "https://ocis.aaitest.owncloud.works/remote.php/webdav/"},
                         {"name": "WEBDAV_VENDOR", "value": "other"},
                         # XXX: strict permissions needed for .local/share/jupyter/runtime/jupyter_cookie_secret
-                        {"name": "MOUNT_OPTS", "value": "--file-perms=0600 --dir-perms=0770"},
+                        # quicker directory cache and polling
+                        {"name": "MOUNT_OPTS", "value": "--file-perms=0600 --dir-perms=0770 --dir-cache-time=1m0s --poll-interval=0m30s"},
                         {"name": "MOUNT_PATH", "value": "/owncloud"},
+                        # default mode is "full"
+                        {"name": "VFS_CACHE_MODE", "value": "full"},
                     ],
                     "resources": self.sidecar_resources,
                     "securityContext": {