Pulling for now seems indeed the best option. I'm closing the #290145 report with suggested patch; it's obviously not what's needed.
Based on reading of mkinitrd, the extension scripts are invoked as the very last action in mkinitrd. LVM is special-cased in the main body; thus your extension script can't act before the code generated for LVM. Extending initrd-tools for multipath-tools could be done as follows: Let multipath-tools depend on dmsetup. Having a multipath device causes mkinitrd to invoke dmsetup, and initrd-tools also runs in environments where everything is on a single IDE disk, so having the dependency in initrd-tools would needlessly bloat simple desktop installs. In mkinitrd, the getroot() function looks at devices and decides how to make them operational. For device-mapper devices, it invokes dm(), which uses `dmsetup table` to determine whether it's a crypt device or LVM. This function would need to be extended to recognise multipath. You then need a function to generate script code for multipath; dmcrypt() is a good example. This does the following: - invoke getroot() on underlying devices - echo required modules to file descriptor 1 - echo required files to fd 4 - echo required script fragment to fd 5 - echo names of required executables and libraries to fd 6 Regards, Erik On Thu, Jan 13, 2005 at 01:59:22PM +0100, Guido Guenther wrote: > On Wed, Jan 12, 2005 at 11:02:50PM +0100, Erik van Konijnenburg wrote: > > The cause: multipath adds a script /etc/mkinitrd/scripts/01_udev; this > > mounts a new /dev and lets udevstart run on it. This happens after > > /script is executed, which is where the LVM command "vgchange -a y vg0" > > is executed to create LVM devices. Unfortunately, udevstart has no way > > of creating the /dev/mapper nodes required by LVM, so the root device > > /dev/mapper/vg0 stays missing. > Uargh, that is very bad. We should run the multipath stuff before the > LVM stuff anyway since you most likely want LVM over the multipath (if > not you're of corse still free to do so). I'll have to have a look at > the scripts of 0.4.2 to see if we can do this easily. Until then it > would probably be best to pull the initrd related parts from > multipath-tools again since they seem to cause quiet some trouble at the > moment and are "only" needed if your root device is multipathed. > Cheers, > -- Guido -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
