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43 lines
1.1 KiB
XML
43 lines
1.1 KiB
XML
<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-luks-file-systems">
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<title>LUKS-Encrypted File Systems</title>
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<para>NixOS supports file systems that are encrypted using
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<emphasis>LUKS</emphasis> (Linux Unified Key Setup). For example,
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here is how you create an encrypted Ext4 file system on the device
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<filename>/dev/sda2</filename>:
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<screen>
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$ cryptsetup luksFormat /dev/sda2
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WARNING!
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========
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This will overwrite data on /dev/sda2 irrevocably.
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Are you sure? (Type uppercase yes): YES
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Enter LUKS passphrase: ***
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Verify passphrase: ***
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$ cryptsetup luksOpen /dev/sda2 crypted
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Enter passphrase for /dev/sda2: ***
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$ mkfs.ext4 /dev/mapper/crypted
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</screen>
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To ensure that this file system is automatically mounted at boot time
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as <filename>/</filename>, add the following to
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<filename>configuration.nix</filename>:
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<programlisting>
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boot.initrd.luks.devices = [ { device = "/dev/sda2"; name = "crypted"; } ];
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fileSystems."/".device = "/dev/mapper/crypted";
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</programlisting>
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</para>
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</section>
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