Setting up LVM on GPT-labeled disks: Difference between revisions
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{{Cmd| | {{Cmd|lvcreate -n myhost.root -L 8G vg0}} | ||
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{{Cmd|vgchange -ay}} | {{Cmd|vgchange -ay}} |
Revision as of 11:44, 27 January 2018
This document describes how to set up a system booting from a logical volume in Alpine using lvm2 and GPT-labeled disks.
Begin by booting from Alpine installation media in the usual way. Log in as `root`, run `setup-alpine`, and answer `none` when asked to choose a disk.
Partitioning
We need to install some tools:
apk add parted lvm2
Now we can create the partition table:
parted -a optimal /dev/sda
unit MiB mkpart 1 1 256 name 1 boot set 1 legacy_boot on mkpart 2 256 100% set 2 lvm on
Now, exit `parted` and reboot to force a reread of the partition table (for some reason `partprobe` doesn't work here).
LVM Creation
Once you've rebooted, run through `setup-alpine` again.
Install some more necessary bits:
apk add lvm2 e2fsprogs syslinux
Create a PV, VG, and a LV for the root partition:
pvcreate /dev/sda2
vgcreate vg0 /dev/sda2
lvcreate -n myhost.root -L 8G vg0
rc-update add lvm
vgchange -ay
Create file systems:
mkfs.ext3 /dev/sda1
mkfs.ext4 /dev/vg0/myhost.root
Mount the file systems in position:
mount -t ext4 /dev/vg0/myhost.root /target
mkdir /target/boot
mount -t ext3 /dev/sda1 /target/boot
Now you can run `setup-disk` to install Alpine:
setup-disk -m sys /target
Finally, install `syslinux` (note that we are installing to `/dev/sda`, *not* `/dev/sda1`):
dd bs=440 conv=notrunc count=1 if=/usr/share/syslinux/gptmbr.bin of=/dev/sda
Reboot and enjoy your new Alpine installation!