Merge remote-tracking branch 'upstream/master' into overlayfs-store

tests/functional/local-overlay-store/optimise-inner.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+
+set -eu -o pipefail
+
+set -x
+
+source common.sh
+
+# Avoid store dir being inside sandbox build-dir
+unset NIX_STORE_DIR
+unset NIX_STATE_DIR
+
+storeDirs
+
+initLowerStore
+
+mountOverlayfs
+
+# Create a file to add to store
+dupFilePath="$TEST_ROOT/dup-file"
+echo Duplicate > "$dupFilePath"
+
+# Add it to the overlay store (it will be written to the upper layer)
+dupFileStorePath=$(nix-store --store "$storeB" --add "$dupFilePath")
+
+# Now add it to the lower store so the store path is duplicated
+nix-store --store "$storeA" --add "$dupFilePath"
+
+# Ensure overlayfs and layers and synchronised
+remountOverlayfs
+
+dupFilename="${dupFileStorePath#/nix/store}"
+lowerPath="$storeA/$dupFileStorePath"
+upperPath="$storeBTop/$dupFilename"
+overlayPath="$storeBRoot/nix/store/$dupFilename"
+
+# Check store path exists in both layers and overlay
+lowerInode=$(stat -c %i "$lowerPath")
+upperInode=$(stat -c %i "$upperPath")
+overlayInode=$(stat -c %i "$overlayPath")
+[[ $upperInode == $overlayInode ]]
+[[ $upperInode != $lowerInode ]]
+
+# Run optimise to deduplicate store paths
+nix-store --store "$storeB" --optimise
+remountOverlayfs
+
+# Check path only exists in lower store
+stat "$lowerPath"
+stat "$overlayPath"
+expect 1 stat "$upperPath"