Re: Question about netmask format

[Harald Hoyer <harald-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

On 31.10.2014 17:55, Orion Poplawski wrote:
> On 10/24/2014 01:08 AM, Harald Hoyer wrote:
>> On 14.10.2014 00:23, Orion Poplawski wrote:
>>> The dracut.cmdline man page lists:
>>>
>>> ip=<client-IP>:[<peer>]:<gateway-IP>:<netmask>:<client_hostname>:<interface>:
>>>    {none|off|dhcp|on|any|dhcp6|auto6|ibft}[:[<dns1>][:<dns2>]]
>>>
>>> for explicit (static) network configuration.  To my old mind, "netmask"
>>> refers to something of the form 255.X.X.X.  However if I use that form with
>>> EL7 or Fedora 20, it fails with a message like:
>>>
>>> Bringing up interface eth0:  Error: an inet prefix is expected rather than
>>> "10.8.0.0/255.255.255.0".
>>>
>>> It works if I give it a CIDR suffix.  It appears that the netmask for used
>>> to work.
>>>
>>> - Orion
>>
>> Hmm, in my case
>>
>> 	"ip=192.168.50.101::192.168.50.1:255.255.255.0:iscsi-1:ens3:off"
>>
>> results in:
>>
>> ip addr flush dev ens3
>> ip addr add 192.168.50.101/255.255.255.0 brd + dev ens3
>> ip route replace default via 192.168.50.1 dev ens3
>> echo iscsi-1 > /proc/sys/kernel/hostname
>>
>> Which works on my machine.
> 
> My full (obsufscated) args are:
> 
> method=http://centos/7.0.1406/os/x86_64 ksdevice=eth0 lang= text net.ifnames=0
> ks=http://cobbler/ks
> ip=4.X.X.X::4.X.X.X:255.255.225.224:test.domain.com:eth0:none:10.10.10.1:10.10.10.2
> kssendmac
> 
> No idea how to determine what commands were run as a result of this.
> 
> This is an anaconda install, so not sure what interaction there might be with
> that.
> 
> Same result with F21, rawhide is uninstallable today so can try that.
> 

add "rd.debug" to the kernel cmdline.

Then inspect /run/initramfs/rdsosreport.txt