Hi Goswin,
I'm sorry to hear about the boot failure. Unfortunately the logs you provided don't shed any light on the cause. But let me explain what I see in the logs:
Thank you for your explanation. I have now taken a closer look at the execd.log, and the nodes are booting again. Here's roughly what has happened (although a few details remain unclear to me): -I switched on the "Initialize IMPI" property in the generic property set I use for compute nodes; -upon reboot, the nodes couldn't find the command that's needed to configure the IMPI interface (I don't remember the name, and the logs are probably gone; but the wrapper script called by init.qlustar complained that "Freeimpi doesn't work"; -I did in fact notice that error at the time, but a) thought it is probably not fatal, and b) set "Initialize IMPI" to false just in case; -when things still did not work, I looked at the head node for problems, and wrote to the list when I couldn't find any; -following your suggenstions, I looked at the execd log again, regenerated the image, and voilà: the nodes boot again; -I have now set "Initialize IMPI" to true again, and the nodes boot and do configure their IMPI cards.
Two observations remain: -There seems to be a typo in init.qlustar. I've attached a patch in case it's useful. -The head node does not have a network interface in the (in-band) IPMI net. Do I configure this manually, or is this supposed to happen automatically?
Thanks a lot,
A.