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62 lines
1.6 KiB
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62 lines
1.6 KiB
Markdown
---
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layout: post
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title: "Setting up GRUB/GPT/LVM"
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date: 2016-01-19 17:09:09 +0100
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comments: true
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categories:
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---
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Notes on setting up a machine to use GPT partitioning, LVM for
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all filesystems (including root), and GRUB2 to boot.
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Starting with a vanilla Debian 7.8 setup. Here we assume that /dev/sdb
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is the disk that will ultimately contain the system.
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GPT setup
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=========
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(parted) mklabel gpt
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(parted) mkpart primary 2048s 4095s
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(parted) set 1 bios_grub on
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(parted) name 1 "BIOS Boot Partition"
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(parted) mkpart primary 4096s 100%
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(parted) set 2 lvm on
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(parted) name 2 "LVM"
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Do we want a swap partition there??? If we don't provision one now,
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we'll have to swap to an LVM LV.
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LVM setup
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=========
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pvcreate /dev/sdb1
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# Format given disk for LVM
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vgcreate tank /dev/sdb2
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# Create a volume group with that disk as the underlying storage
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lvcreate -n rootfs -L 10G tank
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lvcreate -n home -l 100%FREE tank
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Filesystem
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==========
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mkfs.ext4 /dev/mapper/tank-rootfs
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mkfs.ext4 /dev/mapper/tank-home
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mount -t ext4 /dev/mapper/tank-rootfs /mnt
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Set up root filesystem (including /boot subdirectory) in /mnt.
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Make sure that /etc/fstab on tank-rootfs points to the proper
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root fs.
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GRUB2
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=====
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for i in /dev /dev/pts /proc /sys /run; do mount -B $i /mnt$i; done
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chroot /mnt
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rm -f /boot/grub/device.map
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grub-mkconfig -o /boot/grub/grub.cfg
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grub-install /dev/sdb
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