Re: [Devil-linux-develop] How use DHCP client?

[Heiko Z. <he...@zu...>]

Hey,

Wouldn't it be better if the network init script checks if the  
specific pid from /var/run/dhcpcd-ethX.pid is active and if not, just  
delete the file?

Heiko

Quoting Andrzej Odyniec <an...@ma...>:

> Hi,
>
> I detected non typical problem. Source of it is in two assumptions:
>
> 1. one ethernet interface is configured as DHCP client
> 2. on /var directory is mounted permanent storage
>
> After sudden stop of system (i.e. power-off) automatic correct restart (i.e.
> power-restore) is impossible, beacause of existing /var/run/dhcpcd-ethX.pid
> --- /etc/init.d/network script cannot start dhcpd client for that interface,
> so interface will not be configured correctly.
>
> Ofcourse, typically we are not using DHCP configured interfaces in  
> router, but
> some small ISP prefer sometime this methods of configuration.
>
> And typically /var is on ramdisk, so on restart /var/run is again without old
> pids. But sometime /var is located on permanent storage for store logs and
> some configurations (i.e. iptraf) and historic rrd data (i.e. ntop).
>
> Point, where I can clean /var/run catalog is after /etc/init.d/mountfs script
> (if I automount /var filesystem from /etc/fstab). But in this script there is
> no end hook (as in some other scripts).
>
> So there is possibility to mount /var not from /etc/fstab but from earlier
> hook and clean /var/run immediatelly. But I think, this is not elegant
> solution --- typically automatically mounted filesystems are declared in
> /etc/fstab and in this file anyone search mountings.
>
> So there is a question:
>
> Is there other possibility to safely clean /var/run directory after  
> mount from
> fstab but before starting any services? Or maybe mountfs script need
> modification in calling his own hook at end?
>
> Regards
>
> Andrzej Odyniec
>
>
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-- 

Regards
   Heiko Zuerker
   http://www.devil-linux.org


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