RE: System "hangs" on kernels > v4.4-rc1 - mpt2sas problem?

From: Luck, Tony
Date: Fri Jan 08 2016 - 12:33:03 EST

> If you previously had MPT2SAS enabled in your .config then the new
> kernel should automatically pull MPT3SAS in. You still need to verify in
> your initrd that the mpt3sas.ko module gets included, though. How that
> works depends on your distro.

Aha! That looks to be the problem. Looking at the initrd generated by
a simple:

# make install

for the kernel ... I see no "mpt" drivers of any kind!.

The failure mode is very, very odd though. Shouldn't I have got a
"can't mount root" error?

/me goes to find how to tell Dracut to add the mpt3sas module to
the initrd.