[Gllug] Bootable USB backup like OS X dmg?

[John Edwards]

On Tue, May 31, 2011 at 02:20:35PM +0100, Steve Parker wrote:
> On 30/05/11 11:59, Nix wrote:
>> On 30 May 2011, Steve Parker outgrape:
>>> It depends on the type of machine, and what you are trying to achieve.
>>> For a PC, then yes, the dynamic way in which the current Linux kernel
>>> and udev works is great. With more than one NIC, there is no guarantee
>>> that they will both be detected as eth0/eth1 respectively on different
>>> boots.
>> udev has been able to bind names to network interfaces by MAC for many
>> years (following which those names will not change), and has had a rule
>> generator to automate that process after first boot for almost as long.
> 
> Yes, although I don't like hard-coding MAC addresses (with RHEL you
> can put the MAC in ifcfg-NIC); NICs don't often fail, but when they
> do, and you replace it with a new one, I want it to be detected
> based on its PCI address. udev can do it by PCI too, so I have a
> script in the build which does that for me.
> 
> What's the rule generator? I haven't come across that

It will depend on your distribution, but for the current Ubuntu and
Debian setups of udev it is:
	/lib/udev/rules.d/75-persistent-net-generator.rules with the rules
with the rules being written to:
	/etc/udev/rules.d/70-persistent-net.rules

The PCI address of each device is included in the comments, so I
suspect that the udev rules generator script could be hacked to
use this instead of the MAC.


-- 
#---------------------------------------------------------#
|    John Edwards   Email: john at cornerstonelinux.co.uk    |
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