raise unmount thrift call timeout for eden rm

Summary: Unmounting can take some time (especially since we're seeing frequent thrift queue timeouts). Let's raise the timeout a bit and give the user a warning message that it may take longer than usual.

Reviewed By: fanzeyi

Differential Revision: D40113277

fbshipit-source-id: d96d909d8ff66e23d2f7862584a3d0556aecc72d

eden/fs/cli/config.py

@@ -773,7 +773,7 @@ Do you want to run `eden mount %s` instead?"""
         #
         # For now at least time out here so the CLI commands do not hang in this
         # case.
-        with self.get_thrift_client_legacy(timeout=15) as client:
+        with self.get_thrift_client_legacy(timeout=60) as client:
             client.unmount(os.fsencode(path))
 
     def get_handle_path(self) -> Optional[Path]:

eden/fs/cli/main.py

@@ -1456,7 +1456,9 @@ Any uncommitted changes and shelves in this checkout will be lost forever."""
                     # unmounting could still timeout, though we unmount with -f,
                     # so should this theoretically should not happen.
                 try:
-                    print(f"Unmounting {mount}...")
+                    print(
+                        f"Unmounting `{mount}`. Please be patient: this can take up to 1 minute!"
+                    )
                     instance.unmount(mount)
                 except EdenNotRunningError:
                     # Its fine if we could not tell the daemon to unmount