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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>One thing I forgot to say was that there
is a bug in the Fedora image creation scripts for diskless machines. Some
of the problems have been patched but anyone using Fedora 7 will need to make
most of the changes described in here: <a
href="http://www-theorie.physik.unizh.ch/~dpotter/howto/diskless">http://www-theorie.physik.unizh.ch/~dpotter/howto/diskless</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><st1:City w:st="on"><st1:place w:st="on"><font size=2
color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Duncan</span></font></st1:place></st1:City><font size=2
color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'> mythtvnz-bounces@lists.linuxnut.co.nz
[mailto:mythtvnz-bounces@lists.linuxnut.co.nz] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Duncan Ritchie<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, 21 January 2008 6:12
p.m.<br>
<b><span style='font-weight:bold'>To:</span></b> 'MythTV in NZ'<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [mythtvnz] Convert
existing Frontend to a diskless Frontend</span></font><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The howto said I would need to recompile
the kernel with the NFS support but it seems the newer Fedora 7 ones have it
stock so I think you should check the knoppmyth ones first to see if you can
avoid that step.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>My feeling is that it would much easier to
do any prep work on the physical machine (kernel, package installs etc.) then
rsync or tar it over. rsync is good because you can copy it over, test,
make changes to the physical machine and re copy. The recopy does changes
only, compressed and binary diffs so its very fast.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=2
color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Duncan</span></font></st1:City></st1:place><font size=2
color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'> mythtvnz-bounces+duncanr=pobox.com@lists.linuxnut.co.nz
[mailto:mythtvnz-bounces+duncanr=pobox.com@lists.linuxnut.co.nz] <b><span
style='font-weight:bold'>On Behalf Of </span></b>John Moore<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, 21 January 2008 5:02
p.m.<br>
<b><span style='font-weight:bold'>To:</span></b> MythTV in NZ<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [mythtvnz] Convert
existing Frontend to a diskless Frontend</span></font><font color=black><span
style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'>Thanks for the suggestions Duncan and Hads.<br>
<br>
I have been looking at the following <br>
<a href="http://www.knoppmythwiki.org/index.php?page=DisklessFrontend">http://www.knoppmythwiki.org/index.php?page=DisklessFrontend</a><br>
<br>
in conjunction with the link that <st1:place w:st="on"><st1:City w:st="on">Duncan</st1:City></st1:place>
supplied.<br>
<br>
>From the second half of the above link, it looks like another option is to
tar up the partition while excluding my \myth and \mnt\share directories.
(2.4GB)<br>
And copy over to the Knoppmythbe sever to a directory such as
"frontend1" and then untar.<br>
<br>
The howto goes on to say that I need to recompile the kernel to support NFS and
NFSroot and then copy this updated kernel into the "frontend1"
directory.<br>
Following the steps in the howto, it appears to me that I will be recompiling
the Knoppmythbe servers kernel and copying this into the "frontend1"
directory.<br>
As the Frontend and Backend machines are different, won't this cause a problem!<br>
<br>
Wouldn't I be better off to recompile the kernel on the Frontend machine first
before I tar it up and copy it over to the Backend<br>
<br>
<br>
Thanks for the help<br>
John<br>
<br>
PS When I get this sorted, I'll record my steps and update the Wiki so other
noobs like me can have a walkthrough.<br>
<br>
<br>
<br>
<br>
Duncan Ritchie wrote: <o:p></o:p></span></font></p>
<pre wrap=""><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'>I have been working on exactly this over the last few weeks.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>I am using Fedora 7 for my main backend and IPCop as my firewall/DHCP etc.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>I followed the instructions here<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><a
href="http://www.mythtv.org/wiki/index.php/Diskless_Frontend">http://www.mythtv.org/wiki/index.php/Diskless_Frontend</a><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>A couple of things that caused me problems:<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>When you rsync make use you have umount'ed your NFS mount to<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>mythvideo/mythmusic shares or exclude them.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>The snapshot feature on fedora sees to be broken so I had to export the root<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>rw. This isn't an issue for me as I'm happy with a whole image per client.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>You need to have busybox.anaconda installed on the image so it is easier to<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>do this before you rsync.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>I ignored the DHCP info and used the fixed lease feature in IPCop.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>I also tested with a VMPlayer image as shown in the link above. This worked<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>really well.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><st1:place
w:st="on"><st1:City w:st="on"><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'>Duncan</span></font></st1:City></st1:place><o:p></o:p></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>-----Original Message-----<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>From: <a
href="mailto:mythtvnz-bounces+duncanr=pobox.com@lists.linuxnut.co.nz">mythtvnz-bounces+duncanr=pobox.com@lists.linuxnut.co.nz</a><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>[<a
href="mailto:mythtvnz-bounces+duncanr=pobox.com@lists.linuxnut.co.nz">mailto:mythtvnz-bounces+duncanr=pobox.com@lists.linuxnut.co.nz</a>] On Behalf<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Of Hadley Rich<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Sent: Sunday, 20 January 2008 4:45 p.m.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>To: MythTV in NZ<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Subject: Re: [mythtvnz] Convert existing Frontend to a diskless Frontend<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>On Sun, 20 Jan 2008 16:32:38 John Moore wrote:<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'> <o:p></o:p></span></font></pre>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt' type=cite><pre wrap=""><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>I have been wanting to have a diskless frontend for a while now, but the<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>issue of rebuilding the frontend and losing all the changes I researched<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>and made for the VFD display and Remote etc has made me very reluctant.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>However I was wondering if there is any straight forward way to take my<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>current setup and convert it to a image that can be saved on the backend<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>and then used to boot the diskless frontend.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>I am a relatively noob to Linux, but have been playing around with<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Knoppmyth for the last 3 years.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Any ideas / suggestions would be appreciated.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'> <o:p></o:p></span></font></pre></blockquote>
<pre wrap=""><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>You could rsync the entire filesystem to a subdirectory on the backend and <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>then pxe boot and NFS root the frontend from the backend.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>I do that here for the frontend in our bedroom although the filsystem was <o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>created with debootstrap rather than using an existing filesystem.<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>hads<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'> <o:p></o:p></span></font></pre>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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