systemd-makefs@.service(8) — Linux manual page


SYSTEMD-M....SERVICE(8)  systemd-makefs@.service SYSTEMD-M....SERVICE(8)

NAME         top

       systemd-makefs@.service, systemd-mkswap@.service, systemd-
       growfs@.service, systemd-growfs-root.service, systemd-makefs,
       systemd-growfs - Creating and growing file systems on demand

SYNOPSIS         top







DESCRIPTION         top

       systemd-makefs@.service, systemd-mkswap@.service,
       systemd-growfs@.service, and systemd-growfs-root.service are used
       to implement the x-systemd.makefs and x-systemd.growfs options in
       fstab(5), see systemd.mount(5). They are instantiated for each
       device for which the file system or swap structure needs to be
       initialized, and for each mount point where the file system needs
       to be grown.

       These services are started at boot, either right before or right
       after the mount point or swap device are used.

       systemd-makefs knows very little about specific file systems and
       swap devices, and after checking that the block device does not
       already contain a file system or other content, it will execute
       binaries specific to each filesystem type (/sbin/mkfs.type or
       /sbin/mkswap). For certain file system types (currently
       ext2/ext3/ext4(5), btrfs(5), xfs(5), f2fs, vfat) and for swap
       devices, it will configure reasonable defaults and set the file
       system label and UUID based on the device name.

       systemd-growfs knows very little about specific file systems and
       swap devices, and will instruct the kernel to grow the mounted
       filesystem to full size of the underlying block device.
       Nevertheless, it needs to know the ioctl(2) number specific to
       each file system, so only certain types are supported. Currently:
       ext4(5), btrfs(5), xfs(5), and dm-crypt partitions (see

       If the creation of a file system or swap device fails, the mount
       point or swap is failed too. If the growing of a file system
       fails, a warning is emitted.

SEE ALSO         top

       systemd(1), systemd.mount(8), systemd-fstab-generator(8),
       systemd-repart(8), mkfs.btrfs(8), mkfs.cramfs(8), mkfs.ext4(8),
       mkfs.fat(8), mkfs.hfsplus(8), mkfs.minix(8), mkfs.ntfs(8),

COLOPHON         top

       This page is part of the systemd (systemd system and service
       manager) project.  Information about the project can be found at
       ⟨⟩.  If you have
       a bug report for this manual page, see
       This page was obtained from the project's upstream Git repository
       ⟨⟩ on 2023-12-22.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2023-12-22.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

systemd 255                                      SYSTEMD-M....SERVICE(8)

Pages that refer to this page: repart.d(5)systemd.mount(5)systemd.swap(5)systemd.directives(7)systemd.index(7)systemd-repart(8)