'Twas brillig, and Thierry Vignaud at 18/04/12 18:17 did gyre and gimble: > On 11 April 2012 10:41, Colin Guthrie <[email protected]> wrote: >>>> Include persistent-storage udev rules (needed for UUID info on root disks >>>> during install) >>> >>> For the record, what does this fix? >> >> Sorry, I should have been more verbose. >> >> Basically because of the previous commit: >> http://svnweb.mageia.org/soft?view=revision&revision=4014 >> >> We can now generate a "hostonly" initrd, i.e. a nice small, "normal" >> initrd that we typically produce, tailored for the system in question. >> >> As a fallout from this, when running the install with an encrypted root >> partition (and possibly just a normal LVM, not sure), various udev >> properties were not injected into the udev database. These properties >> (FS_UUID - can be seen via e.g. udevadm info --query=property >> --name=/dev/sda5) as needed by dracut to detect things properly (rather >> than resulting to lots of weird and wonderful probing methods dracut >> tries to use udev as it's primary source of info). >> >> So these rules ensured that the UUID of /dev/sd* partitions were >> available in udev. > > Maybe should we include them into rescue too, shouldn't we?
Yeah that makes sense IMO. Sorry I should have fixed it there too. We may also want to investigate whether or not we should "fake" a dracut boot (i.e. mount /run and make sure the folder /run/initramfs exists). The only real requirement is that all the necessary info is available in udev to generate an initrd. I think with the rules and with udev starting before any lvm/crypt commands then that should be fine. Longer term, I think we can maybe look to use dracut itself to create a rescue image itself (and maybe even stage1)... but that's for another day :D Col -- Colin Guthrie colin(at)mageia.org http://colin.guthr.ie/ Day Job: Tribalogic Limited http://www.tribalogic.net/ Open Source: Mageia Contributor http://www.mageia.org/ PulseAudio Hacker http://www.pulseaudio.org/ Trac Hacker http://trac.edgewall.org/
