50 lines
1.9 KiB
Nix
50 lines
1.9 KiB
Nix
import ./make-test-python.nix ({ pkgs, ... }: {
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name = "overlayfs";
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meta.maintainers = with pkgs.stdenv.lib.maintainers; [ bachp ];
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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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"""
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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 && exit 1
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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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})
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