On Thu, Aug 29, 2013 at 4:19 PM, <gottl...@nyu.edu> wrote: > On Thu, Aug 29 2013, Canek Peláez Valdés wrote: > >> As James said, the docs are being reorganized. However, I did a >> systemd+LVM installation (just because I was getting tired of not >> knowing what the fuss was all about), and (in my experience) there are >> almost no changes from the regular installation in the handbook. >> >> I put everything in LVM (/, /boot, everything). > > I am not so ambitious. /+/boot+/usr one ext4 partition not on lvm > >> From my notes, the only changes are: >> >>>From the livecd: >> 1. Use partitions, not whole disks (GRUB2 got confused when I tried to >> use whole disks). >> 2. Set the partition type as LVM (8e in fdisk). >> 3. Create the Physical Volume, the Volume Group, and the Logical >> Volumes as desired. >> 4. Continue the normal installation, just using /dev/vg0/lvolX (or >> whatever names you choose). > > There is a little more (activating or something the LVs) especially if > you shutdown in the middle of the installation and resume it later. > >> After the chroot and emerging the kernel package: >> 1. Se the LVM options in the kernel. Compile, install it. >> 2. Emerge systemd. >> 3. Emerge dracut (USE="device-mapper", DRACUT_MODULES="systemd lvm", at >> least). >> 4. Set add_dracutmodules="systemd" in /etc/dracut.conf. >> 5. Weirdly, set lvmconf="no" in /etc/dracut.conf. I didn't even >> touched /etc/lvm/lvm.conf, so I think leaving it out makes dracut to >> autoconfigure it. If I put lvmconf="yes", the boot hangs. Didn't >> investigated why. >> 6. Emerge GRUB2 (USE="device-mapper mount"); I don't know if GRUB >> works with LVM, but GRUB2 does, so I used that. >> 7. Set GRUB_PRELOAD_MODULES="lvm", >> GRUB_CMDLINE_LINUX="init=/usr/lib/systemd/systemd", in >> /etc/default/grub. >> 8. Generate initramfs, generate /boot/grub2/grub.cfg, install GRUB2 >> with grub2-install. >> 9. Reboot. Everything works. >> >> GRUB2 handles LVM just fine, I believe, but my LVM setup was dead >> simple (the VG was just the only partition of all my disks). >> dracut+systemd takes care of everything else; I didn't even had to do >> something special in fstab, since I used labels. >> >> To extend/reduce your Logical Volumes you will need a livecd, or a >> more complex initramfs, though. >> >> Regards. > > I have experience with LVM, but not systemd or dracut or initramfs > > * both grub and grub2 support lvm
Does GRUB legacy handles /boot in LVM? I haven't tried that yet. > * Never did 2,3,4,5,7, or the initramfs part of 8 > > My goal is to have this system (an older laptop) setup like my current > laptop (grub2, openrc, root+/usr, etc). Then I will convert OLD to > systemd. Once I have done this and moved my work from CURRENT to OLD, I > will convert CURRENT to systemd and move back. That sounds complex. > thanks to you and james for your helpful comments. Regards. -- Canek Peláez Valdés Posgrado en Ciencia e Ingeniería de la Computación Universidad Nacional Autónoma de México
