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| author | Lennart Poettering <lennart@poettering.net> | 2014-03-07 04:31:26 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2014-03-07 04:31:26 +0100 |
| commit | 73b80ec2d999c45ce13f3e034704249d80829f7e (patch) | |
| tree | a7ef3de874917e6b7d0c72bc74b2dd5b40480733 /autogen.sh | |
| parent | udev: automatically create a symlink /dev/disk/by-id/gpt-auto-root if there's... (diff) | |
| download | systemd-73b80ec2d999c45ce13f3e034704249d80829f7e.tar.xz systemd-73b80ec2d999c45ce13f3e034704249d80829f7e.zip | |
gpt-auto-generator: automatically find the root disk of the system
When run in an initrd and no root= argument is set (or is set to
root=gpt-auto) we will automatically look for the root partition on the
same disk the EFI ESP is located on.
Since we look for swap, /home and /srv on the disk the root partition is
located on, we hence have a fully discoverable chain:
Firmware discovers the EFI ESP partition → the initrd discovers the
root partition → the host OS discovers swap, /home, and /srv.
Note that this requires an EFI boot loader that sets the
LoaderDevicePartUUID EFI variable, such as Gummiboot.
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