Comment # 20 on bug 935086 from Uwe Geuder

I went back to default setup and modified
/usr/lib/dracut/modules.d/95resume/resume.sh to 

1.) redirect all output to the console
2.) give an execution trace
3.) adding ample of sleep to give the use time to analyze the screen output.

Even with all the sleeps the resume hangs every time. So if it is a race
condition the race happens before resume.sh is entered.

When I add rd.break=pre-mount to the kernel command line and in the emergency
shell do nothing but press ctrl-D resumes do succeed every time even with the
modified script.

I'll attach my modified script and 2 screen pictures.