21 Oct
2016
21 Oct
'16
8:07 p.m.
On 10/19/2016 23:46, Waldemar Brodkorb wrote:
Hi Joshua,
Joshua Kinard wrote,
My netbooting setup is standard dhcpd with old-school netkit-tftpd (too lazy
to set up the more maintained tftp servers). The bit probably hanging you
up is a simple /proc tuning directive needed for most SGI systems, so try
executing this line on the netboot server:
echo 1 > /proc/sys/net/ipv4/ip_no_pmtu_disc
That's needed for almost all of the SGI systems to netboot properly. IP22
(Indy/Indigo2) systems need this additional /proc tuning to limit the
ephemeral port range:
echo "2048 32767" > /proc/sys/net/ipv4/ip_local_port_range
To actually do the netboot, make sure "netaddr" is unset in the ARCS
environment:
unsetenv netaddr
Then try:
bootp(): <kernel args>
E.g., for my Octane, I typically use:
bootp(): console=tty0 root=/dev/md0 consoleblank=0
And my IP27:
bootp(): console=ttyS0,9600 root=/dev/md0
If you have no kernel args to pass, then just use "bootp():"
Just make sure your dhcpd is set up to do BOOTP requests properly and that
you can tftp get the kernel image from the server using a tftp client, and
it should JustWork(). If you have issues with the kernel itself booting,
let me know and I can roll a kernel for you. I haven't tested O2's in a
while, so I don't know if there's any surprises waiting in the 4.7 or 4.8 code.
--
Joshua Kinard
Gentoo/MIPS
kumba(a)gentoo.org
6144R/F5C6C943 2015-04-27
177C 1972 1FB8 F254 BAD0 3E72 5C63 F4E3 F5C6 C943
"The past tempts us, the present confuses us, the future frightens us. And
our lives slip away, moment by moment, lost in that vast, terrible in-between."
--Emperor Turhan, Centauri Republic
Have you tried 64K PAGE_SIZE by chance? I use
that setting on all of my SGI
systems except for the IP27, which has a peculiar Oops crop up under 64K, so
that machine boots 16K PAGE_SIZE at the moment. You actually get a nice
performance bump on 16K or 64K versus the standard 4K. The testing netboot
image I ran on my IP27 w/ 16K showed no ill effects, but I still need to do 64K
on the O2 and Octane.
I have not tested 64k, but I hope it will work fine. I will check as
soon as I get my O2 netbooting.
It seems I am too stupid to get the machine netbooted.
I tried dnsmasq (dhcp,tftp included) and dhcpd/atftpd combination.
No success so far. I have running a small Linux on my Solidrun
cubox-i as bootserver for my other machines, which normally just
works fine.
Could you share your bootserver details and the command you are
using to boot a system?
For better experience I just want to boot OpenBSD bsd.rd.IP32 file
to see that my bootserver works. Afterwards I want to try my
cross-compiled kernel.
I have netbooted so many machines, even old classic unix hardware,
(with mopd, rarpd, bootparamd, ...) feeling stupid right now.
Any hints?