Date: Wed, 06 Sep 2006 10:49:33 +0200 From: Erik Norgaard <norgaard@locolomo.org> To: "Brian A. Seklecki" <bseklecki@collaborativefusion.com> Cc: alfred@FreeBSD.org, doc@FreeBSD.org Subject: Re: FreeBSD Jumpstart Guide / PXE Docs (TFTP ONLY) Message-ID: <44FE8B9D.5080707@locolomo.org> In-Reply-To: <1157495592.83171.49.camel@soundwave.pgh.priv.collaborativefusion.com> References: <1157495592.83171.49.camel@soundwave.pgh.priv.collaborativefusion.com>
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Brian A. Seklecki wrote:
> These docs should probably more-clearly identify how pxeboot(8) makes
> its decision regarding the file retrieval mechanisms. The man page is
> ambiguous.
>
> Right now the assumption is that the user wants to use NFS to provide
> "/boot". However TFTP can be used. I.e., for users who just want to
> load kernel+MFS Install image (i.e., install-only, no live system VIA
> NFS):
>
> As best I can tell, it has to do with the variables contained with the
> DHCP lease offer. Examples of TFTP-file-retrieval:
>
>
> I.e.,w e need instructions on:
>
> *) Compiling pxeboot w/o NFS and w/ TFTP support:
>
> make LOADER_TFTP_SUPPORT=yes
>
> *) Explain troubleshooting inetd(8)/tfpd(8):
>
> server$ inetd -dl & tail -f /var/log/xfer
>
> *) Explain troubleshooting FTP and NFS:
>
> server$ tcpdump -n "port tftp"
>
> *) dhcpd(8)/dhcpd.conf(5) examples:
>
>
> host web00 {
> hardware ethernet c0:ff:33:c0:ff:33;
> fixed-address 192.168.0.100;
> option host-name "web00";
> option routers 192.168.0.1;
> # These get PXE Loaded (read by the hardware)
> filename "/pxeboot";
> option bootfile-name "/pxeboot";
> # These are read by PXE itself to move on to 2nd stage
> option tftp-server-name "192.168.0.50";
> #option root-path "192.168.0.50:/tftpboot";
> server-name "192.168.0.50";
> next-server 192.168.0.50;
> }
>
>
> The strange thing is that even with the proper config pxeboot(8) still
> attempts to init NFS using "NFS MOUNT RPC error: 60", then gracefully
> fails and continues to TFTP load...
I wrote a PXEBoot guide including jumpstart - work on it started almost
two years ago because I found the current documents inaccurate or
obsolete - seem to date back to 4.x or early 5.x. At the same time I
noted that the diskless stuff is far from current, the document I wrote
covers both setups since the pxebooting is the same, but I have not
finished the diskless part.
The problem with NFS/TFTP you mention have existed for years, I reported
it in 2004: http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/74352
The workaround/solution is documented in the guide I wrote:
a) Compile kernel w/o NFS support and load these as modules after boot
b) Specify in loader.conf that the root device is mfs
I cleaned up the guide I wrote and I posted here some months ago if
anyone would take a look at it:
http://www.daemonsecurity.com/pub/pxeboot/
Cheers, Erik
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