FSTAB

This document will describe fstab stanzas for different filesystems and partitions as standardized in Ubuntu across various things that parse/create/install/consume fstab entries.

device specification

1. By device-mapper name
   1. Linux RAID

   2. LVM /dev/disk/by-id/dm-uuid-LVM-AW4vtN9Nuh503yw4izneqpuLXCui4dVmXUcfJlf355pxKjolkkDmXJhPuJHZmZhI

   3. Multipath /dev/disk/by-id/dm-uuid-part1-mpath-35000c50015ea71ad

   4. LUKS1 /dev/disk/by-id/dm-uuid-CRYPT-LUKS1-85cd9f053c264a9b919a6cf780818425-foobar

   5. LUKS2 /dev/disk/by-id/dm-uuid-CRYPT-LUKS2-85cd9f053c264a9b919a6cf780818425-foobar

   6. Other device-mapper
2. By-fs UUID
3. By-device name

fs default options

1. any: discard
2. rootfs: ext4 discard,errors=remount-ro 0 1
3. /boot: ext4 discard,noatime,nodiratime 0 2
4. /boot/efi: vfat umask=0077 0 1

bootloader specification

Examples