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35 lines
910 B
Nix
35 lines
910 B
Nix
# This is a test utility that automatically formats
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# `config.virtualisation.rootDevice` in the initrd.
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# Note that when you are using
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# `boot.initrd.systemd.enable = true`, you can use
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# `virtualisation.fileSystems."/".autoFormat = true;`
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# instead.
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{
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lib,
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config,
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pkgs,
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...
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}:
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let
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rootDevice = config.virtualisation.rootDevice;
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in
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{
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boot.initrd.extraUtilsCommands = lib.mkIf (!config.boot.initrd.systemd.enable) ''
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# We need mke2fs in the initrd.
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copy_bin_and_libs ${pkgs.e2fsprogs}/bin/mke2fs
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'';
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boot.initrd.postDeviceCommands = lib.mkIf (!config.boot.initrd.systemd.enable) ''
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# If the disk image appears to be empty, run mke2fs to
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# initialise.
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FSTYPE=$(blkid -o value -s TYPE ${rootDevice} || true)
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PARTTYPE=$(blkid -o value -s PTTYPE ${rootDevice} || true)
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if test -z "$FSTYPE" -a -z "$PARTTYPE"; then
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mke2fs -t ext4 ${rootDevice}
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fi
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'';
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}
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