blob: 6019294f2bfe779459226084be431abcc0d1a11b (plain
1) What is it?
A simple initramfs that looks for a filesystem with a given UUID (not the gpt
PARTUUID), looks there for a .tar.xz file containing a root filesystem and
tries to switch root filesystem to a tmpfs where the tarball was extracted.
2) How to use it?
2.1) Stea^WAcquire statically linked copies of:
a) busybox (http://www.busybox.net/)
b) pv (http://www.ivarch.com/programs/pv.shtml)
(protip: use magnets for faster acquiring)
and put the binaries in the initramfs root directory (hint: ./initramfs)
2.2) Get UUID of your filesystem where you have an xz-compressed tarball of
ls -l /dev/disk/by-uuid/ might help
2.3) Set kernel parameters:
ipcmd - arguments for ip (from iputils)
brctl - arguments for brctl
rootfs_part - where to get rootfs tarball from and what to do with it (for example, uncompress)
rootfs_size - size of the tmpfs that will be used as /
init - what executable should be used as init on the system
2.4) Use scripts/mkinitramfs to generate the initramfs
For example: ./scripts/mkinitramfs ./initramfs ./initramfs.cpio.gz
(you might want to pray to flying spaghetti monster, or some other imaginary
friend of your choice)
(assuming your system didn't OOM in the process)
3) I've got an idea/suggestion/bugfix!
git format-patch --stdout -M -C -C -1