According to 
https://fedoraproject.org/wiki/Dracut/Options#Dracut_kernel_command_line_parameters
and
https://people.redhat.com/harald/dracut.html#NetworkBoot

we need pakage " dracut-network" for dracut with nfs

On my Server it looks like:

dpkg -l | grep -e 'dracut\|initram'
rc  dracut                          
rc  dracut-core                     
ii  initramfs-tools                 
ii  initramfs-tools-core            

How can i install dracut* without switching the servers initramdisk?

In the past we had problems to use dracut to boot, so I dont want to test this 
at my production server

Reiner Schulz

-----Ursprüngliche Nachricht-----
Von: linux-fai [mailto:linux-fai-boun...@uni-koeln.de] Im Auftrag von Thomas 
Lange
Gesendet: Donnerstag, 3. Januar 2019 15:58
An: fully automatic installation for Linux <linux-fai@uni-koeln.de>
Betreff: Re: nfsroot: dracut don't know to handle root=

>>>>> On Thu, 3 Jan 2019 14:52:34 +0000, "Schulz, Reiner" <r.sch...@dvz-mv.de> 
>>>>> said:

    > fai-chboot -v -I  -F -s4.9.0-8-amd64 -u nfs://fai.fai.scm/srv/fai/config  
        default

    > Booting with it result in an dracut error:
    > dracut Warning: dracut: FATAL: Don't know hoe to handle 
'root=/srv/fai/nfsroot.stretch:vers=3'
Maybe dracut is confused because you did not specified the IP of the
server but an NFS option.
Concerning to the man page dracut.cmdline this should work, but maybe
you've found a bug in dracut.

You can enable debugging, by adding rd.debug to the kernel cmdline.

-- 
regards Thomas

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