Re: Configure grub for pxe boot and nfs-mounted root

[Vladimir 'φ-coder/phcoder' Serbinenko]

On 26.11.2013 12:26, Beeblebrox wrote:
>>> This doesn't seem to be a GRUB problem at all. I use tftpd which serves
> from /var/tftpd
> You are right, it is not a GRUB problem; it's a folder structure error
> in the way I approached the problem.
> 
>>> boot/grub ($prefix) is where grub.cfg goes. Judging from your first
>>> question, is it possible you serve from a different folder than you think 
>>> you do?
> No, the dhcp-tftp chain is correct. Because /data/amd64 is a jail
> (like a chroot) and the chroot is where dhcp and tftpd are running, I
> thought maybe the correct sytax should be "grub-mknetdir
> --net-directory=/ --subdir=boot/grub", then copy the files to
> boot/grub under the chroot folder. No difference, however and client
> drops to "grub rescue". /var/log/xferlog shows:
> in.tftpd[41762]: RRQ from 192.168.2.34 filename i386-pc/core.0
> in.tftpd[41762]: tftp: client does not accept options
> in.tftpd[41763]: RRQ from 192.168.2.34 filename i386-pc/core.0
> in.tftpd[41764]: RRQ from 192.168.2.34 filename /boot/grub/i386-pc/normal.mod
> in.tftpd[41764]: sending NAK (1, File not found) to 192.168.2.34
> 
You misconfigured your server --net-directory is where root of tftp is.
--subdir is subdirectory of it. Yet your server has root in /boot/grub
and not subdirectory
> grub rescue> set
> cmdpath=(tftp,192.168.2.1)i386-pc
> prefix=(tftp,192.168.2.1)/boot/grub
> root=tftp,192.168.2.1
> net_pxe_boot_file=i386-pc/core.0
> 
> I changed the dhcp-tftpd configuration from prefix /boot/grub/i386-pc,
> to test whether the problem lay in tftpd's inability to rad giles from
> folders one level up (cd ..). Same result.
> 
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