2013-04-30 03:24:09 +00:00
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1) What is it?
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A simple initramfs that looks for a filesystem with a given UUID (not the gpt
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PARTUUID), looks there for a .tar.xz file containing a root filesystem and
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tries to switch root filesystem to a tmpfs where the tarball was extracted.
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2) How to use it?
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2.1) Stea^WAcquire statically linked copies of:
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a) busybox (http://www.busybox.net/)
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b) pv (http://www.ivarch.com/programs/pv.shtml)
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(protip: use magnets for faster acquiring)
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and put the binaries in the initramfs root directory (hint: ./initramfs)
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2.2) Get UUID of your filesystem where you have an xz-compressed tarball of
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your filesystem.
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ls -l /dev/disk/by-uuid/ might help
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2.3) Set these kernel parameters:
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rootfs_location_uuid - uuid of the filesystem containing rootfs tarball
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rootfs_filename - tarball filename
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rootfs_size - size of the tmpfs that will be used as /
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2013-04-30 03:27:41 +00:00
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2.4) Use scripts/mkinitramfs to generate the initramfs
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For example: ./scripts/mkinitramfs ./initramfs ./initramfs.cpio.gz
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2.5) ???
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2013-04-30 03:24:09 +00:00
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(you might want to pray to flying spaghetti monster, or some other imaginary
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friend of your choice)
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2013-04-30 03:27:41 +00:00
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2.6) PROFIT!
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2013-04-30 03:24:09 +00:00
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(assuming your system didn't OOM in the process)
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3) I've got an idea/suggestion/bugfix!
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Patches welcome:
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git format-patch --stdout -M -C -C -1
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