fix: mount Docker volume at run and not before

.github/workflows/sub-deploy-integration-tests-gcp.yml

@@ -274,12 +274,9 @@ jobs:
           --tags ${{ inputs.app_name }} \
           --zone ${{ vars.GCP_ZONE }}
 
-      # Create a docker volume with the new disk we just created or the cached state.
-      #
-      # SSH into the just created VM and create a docker volume with the recently attached disk.
-      # (The cached state and disk are usually the same size,
-      # but the cached state can be smaller if we just increased the disk size.)
-      - name: Create ${{ inputs.test_id }} Docker volume
+      # Format the mounted disk if the test doesn't use a cached state.
+      - name: Format ${{ inputs.test_id }} volume
+        if: ${{ !inputs.needs_zebra_state || !inputs.needs_lwd_state }}
         shell: /usr/bin/bash -ex {0}
         run: |
           gcloud compute ssh ${{ inputs.test_id }}-${{ env.GITHUB_REF_SLUG_URL }}-${{ env.GITHUB_SHA_SHORT }} \
@@ -293,13 +290,7 @@ jobs:
             echo 'Waiting for /dev/sdb to be free...'; \
             sleep 10; \
           done; \
-          # Check if we need to format the disk if no state is needed
-          if [[ "${{ inputs.needs_zebra_state }}" == "false" && "${{ inputs.needs_lwd_state }}" == "false" ]]; then
-            sudo mkfs.ext4 -v /dev/sdb
-          fi \
-          && \
-          sudo docker volume create --driver local --opt type=ext4 --opt device=/dev/sdb \
-          ${{ inputs.test_id }}-${{ env.GITHUB_SHA_SHORT }} \
+          sudo mkfs.ext4 -v /dev/sdb \
           "
 
       # Launch the test with the previously created disk or cached state.
@@ -333,11 +324,11 @@ jobs:
       - name: Launch ${{ inputs.test_id }} test
         shell: /usr/bin/bash -ex {0}
         run: |
-          MOUNT_FLAGS="--mount type=volume,src=${{ inputs.test_id }}-${{ env.GITHUB_SHA_SHORT }},dst=${{ inputs.root_state_path }}/${{ inputs.zebra_state_dir }}"
+          MOUNT_FLAGS="--mount type=volume,volume-driver=local,volume-opt=device=/dev/sdb,volume-opt=type=ext4,dst=${{ inputs.root_state_path }}/${{ inputs.zebra_state_dir }}"
 
           # Check if we need to mount for Lightwalletd state
           if [[ "${{ inputs.needs_lwd_state }}" == "true" || "${{ inputs.test_id }}" == "lwd-full-sync" ]]; then
-            MOUNT_FLAGS="$MOUNT_FLAGS --mount type=volume,src=${{ inputs.test_id }}-${{ env.GITHUB_SHA_SHORT }},dst=${{ inputs.root_state_path }}/${{ inputs.lwd_state_dir }}"
+            MOUNT_FLAGS="$MOUNT_FLAGS --mount type=volume,volume-driver=local,volume-opt=device=/dev/sdb,volume-opt=type=ext4,dst=${{ inputs.root_state_path }}/${{ inputs.lwd_state_dir }}"
           fi
 
           gcloud compute ssh ${{ inputs.test_id }}-${{ env.GITHUB_REF_SLUG_URL }}-${{ env.GITHUB_SHA_SHORT }} \