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mount.conf
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mount.conf
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# SPDX-FileCopyrightText: no
# SPDX-License-Identifier: CC0-1.0
#
# Mount filesystems in the target (generally, before treating the
# target as a usable chroot / "live" system). Filesystems are
# automatically mounted from the partitioning module. Filesystems
# listed here are **extra**. The filesystems listed in *extraMounts*
# are mounted in all target systems.
---
# Extra filesystems to mount. The key's value is a list of entries; each
# entry has five keys:
# - device The device node to mount
# - fs (optional) The filesystem type to use
# - mountPoint Where to mount the filesystem
# - options (optional) An array of options to pass to mount
# - efi (optional) A boolean that when true is only mounted for UEFI installs
#
# The device is not mounted if the mountPoint is unset or if the fs is
# set to unformatted.
#
extraMounts:
- device: proc
fs: proc
mountPoint: /proc
- device: sys
fs: sysfs
mountPoint: /sys
- device: /dev
mountPoint: /dev
options: [ bind ]
- device: tmpfs
fs: tmpfs
mountPoint: /run
- device: /run/udev
mountPoint: /run/udev
options: [ bind ]
- device: efivarfs
fs: efivarfs
mountPoint: /sys/firmware/efi/efivars
efi: true
# Btrfs subvolumes to create if root filesystem is on btrfs volume.
# If *mountpoint* is mounted already to another partition, it is ignored.
# Separate subvolume for swapfile is handled separately and automatically.
#
# It is possible to prevent subvolume creation -- this is likely only relevant
# for the root (/) subvolume -- by giving an empty string as a subvolume
# name. In this case no subvolume will be created.
#
btrfsSubvolumes:
- mountPoint: /
subvolume: /@
# As an alternative:
#
# subvolume: ""
- mountPoint: /home
subvolume: /@home
- mountPoint: /var/cache
subvolume: /@cache
- mountPoint: /var/log
subvolume: /@log
# The name of the btrfs subvolume holding the swapfile. This only used when
# a swapfile is selected and the root filesystem is btrfs
#
btrfsSwapSubvol: /@swap
# The mount options used to mount each filesystem.
#
# filesystem contains the name of the filesystem or on of three special
# values, "default", efi" and "btrfs_swap". The logic is applied in this manner:
# - If the partition is the EFI partition, the "efi" entry will be used
# - If the fs is btrfs and the subvolume is for the swapfile,
# the "btrfs_swap" entry is used
# - If the filesystem is an exact match for filesystem, that entry is used
# - If no match is found in the above, the default entry is used
# - If there is no match and no default entry, "defaults" is used
# - If the mountOptions key is not present, "defaults" is used
#
# Each filesystem entry contains 3 keys, all of which are optional
# options - An array of mount options that is used on all disk types
# ssdOptions - An array of mount options combined with options for ssds
# hddOptions - An array of mount options combined with options for hdds
# If combining these options results in an empty array, "defaults" is used
#
# Example 1
# In this example, there are specific options for ext4 and btrfs filesystems,
# the EFI partition and the subvolume holding the btrfs swapfile. All other
# filesystems use the default entry. For the btrfs filesystem, there are
# additional options specific to hdds and ssds
#
# mountOptions:
# - filesystem: default
# options: [ defaults ]
# - filesystem: efi
# options: [ defaults, umask=0077 ]
# - filesystem: ext4
# options: [ defaults ]
# - filesystem: btrfs
# options: [ defaults, compress=zstd:1 ]
# ssdOptions: [ discard=async ]
# hddOptions: [ autodefrag ]
# - filesystem: btrfs_swap
# options: [ defaults, noatime ]
#
# Example 2
# In this example there is a single default used by all filesystems
#
# mountOptions:
# - filesystem: default
# options: [ defaults ]
#
mountOptions:
- filesystem: default
options: [ defaults ]
- filesystem: efi
options: [ defaults, umask=0077 ]
- filesystem: btrfs
options: [ defaults, compress=zstd:1 ]
- filesystem: btrfs_swap
options: [ defaults, noatime ]