This sendsigs trace is for a failing case:
root 2953 8.8 0.8 18304 8152 ? S 11:01 0:00 /sbin/plymouthd --mode=shutdown [...] + initctl list + sed -n -e /process [0-9]/s/.*process //p + OMITPIDS=-o 2924 + OMITPIDS=-o 2924 -o 715
This sendsigs trace is for a failing case:
root 2953 8.8 0.8 18304 8152 ? S 11:01 0:00 /sbin/plymouthd --mode=shutdown
[...]
+ initctl list
+ sed -n -e /process [0-9]/s/.*process //p
+ OMITPIDS=-o 2924
+ OMITPIDS=-o 2924 -o 715