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On Thu, Aug 29, 2013 at 4:19 PM, <gottlieb@×××.edu> wrote: |
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> On Thu, Aug 29 2013, Canek Peláez Valdés wrote: |
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> |
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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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> |
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> I am not so ambitious. /+/boot+/usr one ext4 partition not on lvm |
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> |
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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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> |
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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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> |
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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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> |
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> I have experience with LVM, but not systemd or dracut or initramfs |
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> |
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> * both grub and grub2 support lvm |
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Does GRUB legacy handles /boot in LVM? I haven't tried that yet. |
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> * Never did 2,3,4,5,7, or the initramfs part of 8 |
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> |
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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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That sounds complex. |
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> thanks to you and james for your helpful comments. |
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Regards. |
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-- |
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Canek Peláez Valdés |
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Posgrado en Ciencia e Ingeniería de la Computación |
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Universidad Nacional Autónoma de México |
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