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47 lines
1.8 KiB
47 lines
1.8 KiB
import ./make-test-python.nix ({ pkgs, ... }: {
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name = "overlayfs";
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meta.maintainers = with pkgs.lib.maintainers; [ bachp ];
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nodes.machine = { pkgs, ... }: {
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virtualisation.emptyDiskImages = [ 512 ];
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networking.hostId = "deadbeef";
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environment.systemPackages = with pkgs; [ parted ];
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};
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testScript = ''
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machine.succeed("ls /dev")
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machine.succeed("mkdir -p /tmp/mnt")
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# Test ext4 + overlayfs
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machine.succeed(
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'mkfs.ext4 -F -L overlay-ext4 /dev/vdb',
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'mount -t ext4 /dev/vdb /tmp/mnt',
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'mkdir -p /tmp/mnt/upper /tmp/mnt/lower /tmp/mnt/work /tmp/mnt/merged',
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# Setup some existing files
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'echo Replace > /tmp/mnt/lower/replace.txt',
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'echo Append > /tmp/mnt/lower/append.txt',
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'echo Overwrite > /tmp/mnt/lower/overwrite.txt',
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'mount -t overlay overlay -o lowerdir=/tmp/mnt/lower,upperdir=/tmp/mnt/upper,workdir=/tmp/mnt/work /tmp/mnt/merged',
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# Test new
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'echo New > /tmp/mnt/merged/new.txt',
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'[[ "$(cat /tmp/mnt/merged/new.txt)" == New ]]',
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# Test replace
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'[[ "$(cat /tmp/mnt/merged/replace.txt)" == Replace ]]',
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'echo Replaced > /tmp/mnt/merged/replace-tmp.txt',
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'mv /tmp/mnt/merged/replace-tmp.txt /tmp/mnt/merged/replace.txt',
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'[[ "$(cat /tmp/mnt/merged/replace.txt)" == Replaced ]]',
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# Overwrite
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'[[ "$(cat /tmp/mnt/merged/overwrite.txt)" == Overwrite ]]',
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'echo Overwritten > /tmp/mnt/merged/overwrite.txt',
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'[[ "$(cat /tmp/mnt/merged/overwrite.txt)" == Overwritten ]]',
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# Test append
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'[[ "$(cat /tmp/mnt/merged/append.txt)" == Append ]]',
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'echo ed >> /tmp/mnt/merged/append.txt',
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'[[ "$(cat /tmp/mnt/merged/append.txt)" == "Append\ned" ]]',
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'umount /tmp/mnt/merged',
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'umount /tmp/mnt',
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'udevadm settle',
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)
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'';
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})
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