During install of glibc, anaconda gets stuck in disk wait state. /dev/md0
is /, /boot is on a normal partition.
I'm attaching a tar.gz file with info from the box including dmesg output
with Alt+SysRq+T and Alt+SysRq+P.
Created attachment 31274 [details]
all sorts of handy info
Happens sometimes but not always; today took 7 tries to get it to happen
i think this is sorted out by now