diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8112af5..75e168c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,5 +30,7 @@ jobs:
         uses: actions/checkout@v3
       - name: Install extra build dependencies
         run: sudo apt-get install -y liblz4-dev libipc-run-perl
+      - name: debug
+        run: namei -l /__w/pg_filedump/pg_filedump/tmp_check/t_001_basic_master_data/pgdata
       - name: Build and test on PostgreSQL ${{ matrix.pg }}
         run: PATH=$PATH:/usr/lib/postgresql/${{ matrix.pg }}/bin pg-build-test