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