mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-25 23:36:16 +02:00
69 lines
2.1 KiB
Bash
Executable file
69 lines
2.1 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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## Initialise stores for test
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# Realise a derivation from the lower store to propagate paths to overlay DB
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nix-store --store "$storeB" --realise $drvPath
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# Also ensure dummy file exists in overlay DB
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dummyPath=$(nix-store --store "$storeB" --add ../dummy)
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# Add something to the lower store that will not be propagated to overlay DB
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lowerOnlyPath=$(addTextToStore "$storeA" lower-only "Only in lower store")
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# Verify should be successful at this point
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nix-store --store "$storeB" --verify --check-contents
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# Make a backup so we can repair later
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backupStore="$storeVolume/backup"
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mkdir "$backupStore"
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tar -cC "$storeBRoot" nix | tar -xC "$backupStore"
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## Deliberately corrupt store paths
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# Delete one of the derivation inputs in the lower store
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inputDrvFullPath=$(find "$storeA" -name "*-hermetic-input-1.drv")
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inputDrvPath=${inputDrvFullPath/*\/nix\/store\///nix/store/}
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rm -v "$inputDrvFullPath"
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# Truncate the contents of dummy file in lower store
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find "$storeA" -name "*-dummy" -exec truncate -s 0 {} \;
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# Also truncate the file that only exists in lower store
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truncate -s 0 "$storeA/$lowerOnlyPath"
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# Ensure overlayfs is synchronised
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remountOverlayfs
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## Now test that verify and repair work as expected
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# Verify overlay store without attempting to repair it
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verifyOutput=$(expectStderr 1 nix-store --store "$storeB" --verify --check-contents)
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<<<"$verifyOutput" grepQuiet "path '$inputDrvPath' disappeared, but it still has valid referrers!"
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<<<"$verifyOutput" grepQuiet "path '$dummyPath' was modified! expected hash"
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<<<"$verifyOutput" expectStderr 1 grepQuiet "$lowerOnlyPath" # Expect no error for corrupted lower-only path
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# Attempt to repair using backup
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addConfig "substituters = $backupStore"
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repairOutput=$(nix-store --store "$storeB" --verify --check-contents --repair 2>&1)
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<<<"$repairOutput" grepQuiet "copying path '$inputDrvPath'"
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<<<"$repairOutput" grepQuiet "copying path '$dummyPath'"
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