Some netboot doc cleanups

Some netboot doc cleanups

[Warren Togami]

https://sourceforge.net/apps/trac/dracut/wiki/commandline
> Configuration in initrd ¶
>
> /conf/conf.d/*
>     command line options can override values set here

What is the intent here?  This is only used from 
modules.d/95iscsi/iscsiroot and nowhere else.

> Network ¶
>
>     * ip=[dhcp|on|any]
>           o get ip from dhcp server from all interfaces
>           o If root=dhcp, loop sequentially through all interfaces (eth0, eth1, ...) and use the first with a valid DHCP root-path.

dhcp and any seem to do the same thing.  Get rid of any?

>     * ip=<interface>:[dhcp|on|any]
>           o get ip from dhcp server on a specific interface
>     * ip=[none|off]
>           o no TCP/IP network

What is the point of this?  When is this ever useful?

>     * ip=<client-IP-number>:<gateway-IP-number>:<netmask>:<client-hostname>:<interface>:[dhcp|on|any|none|off|]
>           o explicit network configuration


> rdbreak=[pre-udev|pre-mount|mount|pre-pivot|]
>     drop the shell on defined breakpoint

It isn't clear from this syntax how to make it break in two particular 
places.  Please clarify.

Warren Togami
wtogami-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org

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Re: Some netboot doc cleanups

[Harald Hoyer]

On 06/15/2009 10:43 PM, Warren Togami wrote:
> https://sourceforge.net/apps/trac/dracut/wiki/commandline
>> Configuration in initrd ¶
>>
>> /conf/conf.d/*
>> command line options can override values set here
>
> What is the intent here? This is only used from
> modules.d/95iscsi/iscsiroot and nowhere else.

This is intended to be a mechanism to inject (sensible) configuration files in 
the pregenerated image.

We could use this globally, if more modules need this.
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Re: Some netboot doc cleanups

[Seewer Philippe]

Warren Togami wrote:
> https://sourceforge.net/apps/trac/dracut/wiki/commandline
>> Configuration in initrd ¶
>>
>> /conf/conf.d/*
>>     command line options can override values set here
> 
> What is the intent here?  This is only used from 
> modules.d/95iscsi/iscsiroot and nowhere else.
> 
>> Network ¶
>>
>>     * ip=[dhcp|on|any]
>>           o get ip from dhcp server from all interfaces
>>           o If root=dhcp, loop sequentially through all interfaces 
>> (eth0, eth1, ...) and use the first with a valid DHCP root-path.
> 
> dhcp and any seem to do the same thing.  Get rid of any?

This is "legacy" from kernel nfsroot. We should keep this for compatibility.

> 
>>     * ip=<interface>:[dhcp|on|any]
>>           o get ip from dhcp server on a specific interface
>>     * ip=[none|off]
>>           o no TCP/IP network
> 
> What is the point of this?  When is this ever useful?

ip=[none|off] doesn't make any sense at all. Can be removed IMHO.

Regards,
Philippe
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Re: Some netboot doc cleanups

[Warren Togami]

On 06/16/2009 04:37 AM, Seewer Philippe wrote:
>>> Network ¶
>>>
>>> * ip=[dhcp|on|any]
>>> o get ip from dhcp server from all interfaces
>>> o If root=dhcp, loop sequentially through all interfaces (eth0, eth1,
>>> ...) and use the first with a valid DHCP root-path.
>>
>> dhcp and any seem to do the same thing. Get rid of any?
>
> This is "legacy" from kernel nfsroot. We should keep this for
> compatibility.
>
>>
>>> * ip=<interface>:[dhcp|on|any]
>>> o get ip from dhcp server on a specific interface
>>> * ip=[none|off]
>>> o no TCP/IP network
>>
>> What is the point of this? When is this ever useful?
>
> ip=[none|off] doesn't make any sense at all. Can be removed IMHO.
>

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=Documentation/filesystems/nfsroot.txt

ip none and off are mentioned here as well, although it seems ambiguous 
as to the purpose.

Warren
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