Re: More on Re: Really changing the hostname

[Les Mikesell <lesmikesell@xxxxxxxxx>]

On Fri, Feb 15, 2013 at 3:52 PM, Reindl Harald <h.reindl@xxxxxxxxxxxxx> wrote:
>
>>>> I don't understand how you create that udev entry before you need it
>>>
>>> easy if you know the MAC address
>>
>> Do you mean you make the change in a virtual system image before
>> copying/changing the virtual MACs?   Or in a script that runs during
>> boot up before the network comes up?
>
> before changing the MAC

Most of our machines are physical and the issue happens when I swap
disks to a new chassis or clone images.   The same solution 'could'
work, but I generally don't know ahead of time where the image is
going.

>>>> Or why one udev-assigned name is different from any other name once
>>>> it is in place in that file
>>>
>>> you know what race-condition means?
>>> https://bugzilla.redhat.com/show_bug.cgi?id=782145
>>
>> I suppose that's possible, but doesn't have much to do with the issue
>> of making the ifcfg-* files match the MAC address.
>
> WTF - this issue does not exist if you are not so stupid
> and place the MAC address additionally to the udev-rule
> in the ifcfg-*

No, the link you posted has to do with a race between the kernel
itself and udev.  Nothing to do with what happens at ifup time.
Things would already be broken by then, though.  I do see how not
using the same names the kernel would auto-assign would avoid the race
problem, but I'm not sure it happens in CentOS.   If you use fedora,
you deserve the extra bugs.

-- 
  Les Mikesell
    lesmikesell@xxxxxxxxx
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