dracut.bootup(7) — Linux manual page

NAME | DESCRIPTION | AUTHOR | SEE ALSO | COLOPHON

DRACUT.BOOTUP(7)                 dracut                 DRACUT.BOOTUP(7)

NAME         top

       dracut.bootup - boot ordering in the initramfs

DESCRIPTION         top

       This flow chart illustrates the ordering of the services, if
       systemd is used in the dracut initramfs.

                                               systemd-journal.socket
                                                          |
                                                          v
                                               dracut-cmdline.service
                                                          |
                                                          v
                                               dracut-pre-udev.service
                                                          |
                                                          v
                                                systemd-udevd.service
                                                          |
                                                          v
           local-fs-pre.target                dracut-pre-trigger.service
                    |                                     |
                    v                                     v
            (various mounts)  (various swap  systemd-udev-trigger.service
                    |           devices...)               |             (various low-level   (various low-level
                    |               |                     |             services: seed,       API VFS mounts:
                    v               v                     v             tmpfiles, random     mqueue, configfs,
             local-fs.target   swap.target     dracut-initqueue.service    sysctl, ...)        debugfs, ...)
                    |               |                     |                    |                    |
                    \_______________|____________________ | ___________________|____________________/
                                                         \|/
                                                          v
                                                   sysinit.target
                                                          |
                                        _________________/|\___________________
                                       /                  |                    \
                                       |                  |                    |
                                       v                  |                    v
                                   (various               |              rescue.service
                                  sockets...)             |                    |
                                       |                  |                    v
                                       v                  |              rescue.target
                                sockets.target            |
                                       |                  |
                                       \_________________ |                                 emergency.service
                                                         \|                                         |
                                                          v                                         v
                                                    basic.target                             emergency.target
                                                          |
                                   ______________________/|
                                  /                       |
                                  |                       v
                                  |            dracut-pre-mount.service
                                  |                       |
                                  |                       v
                                  |                  sysroot.mount
                                  |                       |
                                  |                       v
                                  |             initrd-root-fs.target
                      (custom initrd services)            |
                                  |                       v
                                  |             dracut-mount.service
                                  |                       |
                                  |                       v
                                  |            initrd-parse-etc.service
                                  |                       |
                                  |                       v
                                  |            (sysroot-usr.mount and
                                  |             various mounts marked
                                  |               with fstab option
                                  |                x-initrd.mount)
                                  |                       |
                                  |                       v
                                  |                initrd-fs.target
                                  \______________________ |
                                                         \|
                                                          v
                                                     initrd.target
                                                          |
                                                          v
                                               dracut-pre-pivot.service
                                                          |
                                                          v
                                                initrd-cleanup.service
                                                     isolates to
                                               initrd-switch-root.target
                                                          |
                                                          v
                                   ______________________/|
                                  /                       |
                                  |        initrd-udevadm-cleanup-db.service
                                  |                       |
                      (custom initrd services)            |
                                  |                       |
                                  \______________________ |
                                                         \|
                                                          v
                                              initrd-switch-root.target
                                                          |
                                                          v
                                              initrd-switch-root.service
                                                          |
                                                          v
                                                     switch-root

AUTHOR         top

       Harald Hoyer

SEE ALSO         top

       dracut(8) bootup(7)

COLOPHON         top

       This page is part of the dracut (event driven initramfs
       infrastructure) project.  Information about the project can be
       found at ⟨https://dracut.wiki.kernel.org/index.php/Main_Page⟩.
       If you have a bug report for this manual page, send it to
       initramfs@vger.kernel.org.  This page was obtained from the
       project's upstream Git repository
       ⟨git://git.kernel.org/pub/scm/boot/dracut/dracut.git⟩ on
       2021-04-01.  (At that time, the date of the most recent commit
       that was found in the repository was 2021-02-23.)  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 man-pages@man7.org

dracut 050-2-g9e68789d         05/16/2020               DRACUT.BOOTUP(7)