diff options
| author |   Harald Hoyer <harald@redhat.com> | 2013-03-14 13:12:10 +0100 |
|---|---|---|
| committer | Harald Hoyer <harald@redhat.com> | 2013-03-15 00:49:37 +0100 |
| commit | 9e5f0f92915b777308797294c6e103e430957b5d (patch) | |
| tree | daf284ba6992764b083d43bb9cfb66eed8319c6e /man/bootup.xml | |
| parent | main: don't mount /sys, /dev and friends when we run with PID != 1 (diff) | |
| download | systemd-9e5f0f92915b777308797294c6e103e430957b5d.tar.gz systemd-9e5f0f92915b777308797294c6e103e430957b5d.tar.bz2 systemd-9e5f0f92915b777308797294c6e103e430957b5d.zip | |
Make initrd.target the default target in the initrd
First, rename root-fs.target to initrd-root-fs.target to clarify its usage.
Mount units with "x-initrd-rootfs.mount" are now ordered before
initrd-root-fs.target. As we sometimes construct /sysroot mounts in
/etc/fstab in the initrd, we want these to be mounted before the
initrd-root-fs.target is active.
initrd.target can be the default target in the initrd.
(normal startup)
:
:
v
basic.target
|
______________________/|
/ |
| sysroot.mount
| |
| v
| initrd-root-fs.target
| |
| v
| initrd-parse-etc.service
(custom initrd services) |
| v
| (sysroot-usr.mount and
| various mounts marked
| with fstab option
| x-initrd.mount)
| |
| v
| initrd-fs.target
| |
\______________________ |
\|
v
initrd.target
|
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
Diffstat (limited to 'man/bootup.xml')
| -rw-r--r-- | man/bootup.xml | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/man/bootup.xml b/man/bootup.xml index f65abf545..6bd22ef47 100644 --- a/man/bootup.xml +++ b/man/bootup.xml @@ -174,6 +174,79 @@ </refsect1> <refsect1> + <title>Systemd in the Initrd</title> + <para>If the initrd creation tool used the services provided + by systemd, the default target in the initrd is the + initrd-fs.target. The process is the same as above until the basic.target is reached. + Systemd now continues to the initrd.target. If the root device could be mounted + on /sysroot, the sysroot.mount unit is active and the initrd-root-fs.target is reached. + initrd-parse-etc.service scans /sysroot/etc/fstab for the /usr mountpoint and for entries + marked with the <emphasis>x-initrd.mount</emphasis> option set. If these mountpoint are + mounted in /sysroot, the initrd-fs.target is reached. + The initrd-cleanup.service isolates to the initrd-switch-root.target, + where cleanup services can run. At the very last end + initrd-switch-root.service is activated, which will cause + the system to switch root to /sysroot. + </para> + +<programlisting> + (same as above) + : + : + v + basic.target + | emergency.service + ______________________/| | + / | v + | sysroot.mount <emphasis>emergency.target</emphasis> + | | + | v + | initrd-root-fs.target + | | + | v + | initrd-parse-etc.service + (custom initrd services) | + | v + | (sysroot-usr.mount and + | various mounts marked + | with fstab option + | x-initrd.mount) + | | + | v + | initrd-fs.target + | | + \______________________ | + \| + v + initrd.target + | + 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 +</programlisting> + </refsect1> + + + <refsect1> <title>System Manager Shutdown</title> <para>System shutdown also consists of various target |