mirror of
https://github.com/NixOS/nix
synced 2024-09-19 10:50:24 -04:00
52 lines
1.2 KiB
Bash
Executable file
52 lines
1.2 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -eu -o pipefail
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set -x
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source common.sh
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# Avoid store dir being inside sandbox build-dir
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unset NIX_STORE_DIR
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unset NIX_STATE_DIR
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setupStoreDirs
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initLowerStore
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mountOverlayfs
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# Create a file to add to store
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dupFilePath="$TEST_ROOT/dup-file"
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echo Duplicate > "$dupFilePath"
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# Add it to the overlay store (it will be written to the upper layer)
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dupFileStorePath=$(nix-store --store "$storeB" --add "$dupFilePath")
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# Now add it to the lower store so the store path is duplicated
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nix-store --store "$storeA" --add "$dupFilePath"
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# Ensure overlayfs and layers and synchronised
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remountOverlayfs
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dupFilename="${dupFileStorePath#/nix/store}"
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lowerPath="$storeA/$dupFileStorePath"
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upperPath="$storeBTop/$dupFilename"
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overlayPath="$storeBRoot/nix/store/$dupFilename"
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# Check store path exists in both layers and overlay
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lowerInode=$(stat -c %i "$lowerPath")
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upperInode=$(stat -c %i "$upperPath")
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overlayInode=$(stat -c %i "$overlayPath")
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[[ $upperInode == $overlayInode ]]
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[[ $upperInode != $lowerInode ]]
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# Run optimise to deduplicate store paths
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nix-store --store "$storeB" --optimise
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remountOverlayfs
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# Check path only exists in lower store
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stat "$lowerPath"
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stat "$overlayPath"
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expect 1 stat "$upperPath"
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