1SYSTEMD-DEBUG-GENERATOR(8)  systemd-debug-generator SYSTEMD-DEBUG-GENERATOR(8)
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NAME

6       systemd-debug-generator - Generator for enabling a runtime debug shell
7       and masking specific units at boot
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SYNOPSIS

10       /usr/lib/systemd/system-generators/systemd-debug-generator
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DESCRIPTION

13       systemd-debug-generator is a generator that reads the kernel command
14       line and understands three options:
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16       If the systemd.mask= or rd.systemd.mask= option is specified and
17       followed by a unit name, this unit is masked for the runtime, similar
18       to the effect of systemctl(1)'s mask command. This is useful to boot
19       with certain units removed from the initial boot transaction for
20       debugging system startup. May be specified more than once.
21       rd.systemd.mask= is honored only by initial RAM disk (initrd) while
22       systemd.mask= is honored only in the main system.
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24       If the systemd.wants= or rd.systemd.wants= option is specified and
25       followed by a unit name, a start job for this unit is added to the
26       initial transaction. This is useful to start one or more additional
27       units at boot. May be specified more than once.  rd.systemd.wants= is
28       honored only by initial RAM disk (initrd) while systemd.wants= is
29       honored only in the main system.
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31       If the systemd.debug_shell or rd.systemd.debug_shell option is
32       specified, the debug shell service "debug-shell.service" is pulled into
33       the boot transaction and a debug shell will be spawned during early
34       boot. By default, /dev/tty9 is used, but a specific tty can also be
35       set, either with or without the /dev/ prefix. Note that the shell may
36       also be turned on persistently by enabling it with systemctl(1)'s
37       enable command.  rd.systemd.debug_shell= is honored only by initial RAM
38       disk (initrd) while systemd.debug_shell is honored only in the main
39       system.
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41       systemd-debug-generator implements systemd.generator(7).
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SEE ALSO

44       systemd(1), systemctl(1), kernel-command-line(7)
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48systemd 248                                         SYSTEMD-DEBUG-GENERATOR(8)
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