On Sun, Jan 13, 2013 at 02:21:01PM +0000, Rodrigo Rivas wrote: > On Sat, Jan 12, 2013 at 10:55 PM, Christoph Vigano <mail@xxxxxxxxxx> wrote: > > > On 31.12.2012 11:00, Rodrigo Rivas wrote: > > > On Mon, Dec 31, 2012 at 8:37 AM, Christoph Vigano <mail@xxxxxxxxxx> > > wrote: > > > > > >> > > >> How can I tell mkinitcpio to include a custom udev rule? Do I need to > > >> write a hook for that? How can a hook for this look like? > > > > > > > > > AFAIK, using FILES="path-to-udev-rule-file" should be enough. The udev > > > binaries and basic rules are already there, so adding the custom rule to > > > the image should make it work automagically. > > > > > > HTH > > > -- > > > Rodrigo > > > > > > > Sadly, that did not work although the file containing the rule is inside > > the initrd (verified with lsinitcpio). > > > > Any other idea how to debug this? > > > > Well... an ugly hack I did to debug the initrd is, if you use grub: > 1. In the grub menu press 'e' to edit the boot commands. > 2. Remove the 'root=whatever' or change it so something non-existant. > 3. Run the boot commands with F10. > > This way the initramfs will not mount the root filesystem and will drop to > a emergency shell. It will run with the initramfs mounted at '/', so you > can use it to debug your problem. Note that you still can mount the real > root into, for example, '/mnt' and copy or use any tool or file you need > that is not available in initramfs (eg 'udevadm'). > > Yes, it is a hack, but I don't know a proper way to do it. Other distros, > such as Ubuntu, have a 'debug=<breakpoint>' option to do this kind of > things. But, hey, it works, I even used it once to convert the root > filesystem from ext4 to btrfs without an additional boot device 8-). > > -- > Rodrigo mkinitcpio's manpage documents a 'break' variable which does this sanely.
