dracut.bootup.7.asc

   1 DRACUT.BOOTUP(7)
   2 ================
   3 :doctype: manpage
   4 :man source:   dracut
   5 :man manual:   dracut
   6
   7 NAME
   8 ----
   9 dracut.bootup - boot ordering in the initramfs
  10
  11 DESCRIPTION
  12 -----------
  13
  14 This flow chart illustrates the ordering of the services, if systemd is used in
  15 the dracut initramfs.
  16 ----
  17
  18                                     systemd-journal.socket
  19                                                |
  20                                                v
  21                                     dracut-cmdline.service
  22                                                |
  23                                                v
  24                                     dracut-pre-udev.service
  25                                                |
  26                                                v
  27                                      systemd-udevd.service
  28                                                |
  29                                                v
  30 local-fs-pre.target                dracut-pre-trigger.service
  31          |                                     |
  32          v                                     v
  33  (various mounts)  (various swap  systemd-udev-trigger.service
  34          |           devices...)               |             (various low-level   (various low-level
  35          |               |                     |             services: seed,       API VFS mounts:
  36          v               v                     v             tmpfiles, random     mqueue, configfs,
  37   local-fs.target   swap.target     dracut-initqueue.service    sysctl, ...)        debugfs, ...)
  38          |               |                     |                    |                    |
  39          \_______________|____________________ | ___________________|____________________/
  40                                               \|/
  41                                                v
  42                                         sysinit.target
  43                                                |
  44                              _________________/|\___________________
  45                             /                  |                    \
  46                             |                  |                    |
  47                             v                  |                    v
  48                         (various               |              rescue.service
  49                        sockets...)             |                    |
  50                             |                  |                    v
  51                             v                  |              rescue.target
  52                      sockets.target            |
  53                             |                  |
  54                             \_________________ |                                 emergency.service
  55                                               \|                                         |
  56                                                v                                         v
  57                                          basic.target                             emergency.target
  58                                                |
  59                         ______________________/|
  60                        /                       |
  61                        |                       v
  62                        |            dracut-pre-mount.service
  63                        |                       |
  64                        |                       v
  65                        |                  sysroot.mount
  66                        |                       |
  67                        |                       v
  68                        |             initrd-root-fs.target
  69            (custom initrd services)            |
  70                        |                       v
  71                        |             dracut-mount.service
  72                        |                       |
  73                        |                       v
  74                        |            initrd-parse-etc.service
  75                        |                       |
  76                        |                       v
  77                        |            (sysroot-usr.mount and
  78                        |             various mounts marked
  79                        |               with fstab option
  80                        |                x-initrd.mount)
  81                        |                       |
  82                        |                       v
  83                        |                initrd-fs.target
  84                        \______________________ |
  85                                               \|
  86                                                v
  87                                           initrd.target
  88                                                |
  89                                                v
  90                                     dracut-pre-pivot.service
  91                                                |
  92                                                v
  93                                      initrd-cleanup.service
  94                                           isolates to
  95                                     initrd-switch-root.target
  96                                                |
  97                                                v
  98                         ______________________/|
  99                        /                       |
 100                        |        initrd-udevadm-cleanup-db.service
 101                        |                       |
 102            (custom initrd services)            |
 103                        |                       |
 104                        \______________________ |
 105                                               \|
 106                                                v
 107                                    initrd-switch-root.target
 108                                                |
 109                                                v
 110                                    initrd-switch-root.service
 111                                                |
 112                                                v
 113                                           switch-root
 114 ----
 115
 116
 117 AUTHOR
 118 ------
 119 Harald Hoyer
 120
 121 SEE ALSO
 122 --------
 123 *dracut*(8) *bootup*(7)