[mythtv-users] multiple network boot diskless frontendswith seperate configurations?

Johnny Walker johnnyjboss at gmail.com
Wed Dec 9 05:37:31 UTC 2009

On Thu, Dec 3, 2009 at 2:01 PM, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
> On Thu, Dec 3, 2009 at 2:46 PM, Bobby Schwartz <rschwartz at lastar.com> wrote:
>>> The information is out there but it is well hidden.
>>> On mythbuntu 0.21 each FE's MAC address is used for an independent
>> file
>>> repository for that FE, on the BE.  On 0.21 you can just do
>>> it.
>>> Also note multiple diskless FE's will likely need more HDD file space
>>> allocation over a default setup.
>>> On 0.22 apparently one has to do this from the command line however
>>> I've not figured that out yet, perhaps someone can clarify?
>> I'm a Mythbuntu fanboy and this writeup really got me off the ground:
>> https://help.ubuntu.com/community/MythTV/Install/Hardy/Diskless

This was indeed very helpful - I personally also needed to use
http://www.etherboot.org/wiki/twodhcpservers since I have a Mac
Airport Router which will not allow me to Disable or sufficiently
control the dhcp server. It was no problem to add another to my
network since the PXE stack (evidently) ignores the dhcp server not
sending a filename option. (genius)

I thought diskless boot was going to take more then 24 hours to get
rolling. I guess I'm wrong again.

This mailing list is the best thing I've joined in long time. Thanks guys.


>> The basic idea is that you have a starting image + an overlay for each
>> system (based on MAC address.)  Each system mounts a read-only copy of
>> the starting chroot and then mounts a pivot copy of its own settings.
>> Eveything is stored on the diskless server.  If you ever desire you can
>> purge the overlay for any specific system and that system will revert
>> back to the initial chroot.  You may also modify the chroot and all
>> systems will get the change.
>> In Mythbuntu most of the setup is handled through a distro package.
>> There are still some bugs and rough spots that I haven't worked through
>> yet.  And I'm definitely very green at this type of setup.  But like I
>> said, that link got me 90% of the way there.  Mythbuntu 9.10 has MythTV
>> 0.22.
> ah, ok, I get it now!
> so basically I should set up one computer with everything I want
> *both* to have, then move the "overlay" onto the ltsp  /i386 folder
> and recreate the image for the machines to boot off. Then each will by
> default have their own settings via the overlay thing. To quote a
> popular commercial, "Genius!".
> Thanks for clearing this all up for me!
> --
> Steve
> http://www.mythtv.org/wiki/index.php/User:Steveadeff
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