diff --git a/teuthology/task/mds_journal_migration.py b/teuthology/task/mds_journal_migration.py
index d4ff03392b7..0d2bf09cf5c 100644
--- a/teuthology/task/mds_journal_migration.py
+++ b/teuthology/task/mds_journal_migration.py
@@ -101,5 +101,6 @@ def task(ctx, config):
     # Leave all MDSs and clients running for any child tasks
     for mount in ctx.mounts.values():
         mount.mount()
+        mount.wait_until_mounted()
 
     yield