Re: iBFT oddities

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On 04.06.2014 09:52, Hannes Reinecke wrote:
> Hi all,
> 
> I'm trying to setup a machine with root on iSCSI via iBFT
> (on SR-IOV, yay!).
> 
> But anyhow, I'll be setting 'ip=ibft' on the commandline as per documentation
> and the iBFT settings are applied and everything is nice and dandy.
> 
> It's only that dracut complains during boot:
> 
> Jun 03 16:28:11 localhost dracut-cmdline[80]: ibft
> Jun 03 16:28:11 localhost dracut-cmdline[80]: Warning: Please supply bootdev
> argument for multiple ip= lines
> Jun 03 16:28:11 localhost dracut-cmdline[80]: Warning: Setting bootdev to 'ibft0'
> 
> Looking closer, setting 'ip=ibft' triggers 'ibft_to_cmdline()',
> which will add _another_ ip= argument to the dracut commandline.
> And consequently parse_ip_opts() complains here.
> 
> While it's quite easy to fix (just ignore ip=ibft when checking for duplicate
> ip arguments), I do wonder whether this is the correct way.
> 
> Thing is, 'ip=ibft' is not really an ip setting, but rather a marker that iBFT
> should be evaluated.
> As such, wouldn't 'rd.iscsi.firmware=ibft' be a more appropriate setting?
> Seeing that the ip argument is added to the commandline anyway, having a
> duplicate 'ip=ibft' setting does look a bit odd.
> And confuses the logic ...
> 
> Cheers,
> 
> Hannes

Good catch! The bad thing is, that "ip=ibft" is already documented and used, so
we might want "rd.iscsi.ibft=1" and also ignore "ip=ibft" in the check.

"rd.iscsi.firmware=1" is already taken for also starting iscsistart (which also
starts the network interfaces, AFAIK)

"rd.iscsi.ibft=1" would probably fit, if you only want to ifup the network
interfaces.


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