SOLVED. On 8/7/12 8:00 PM, Ron McDowell wrote:
Getting real close to calling "success" on this one...
I have my new World [NFS-mounted root filesystem] built, up and
running with an old 2.6.32 kernel that came with my board. Built a
new 2.6.39.4 kernel and installed it, but it hangs when it gets to the
point where it wants to mount the root fs...see the end of the
attached boot text. I'm sure something in my .config isn't right, but
can't put my finger on it. Has anyone had this issue before?
Thanks. --rcm
[snip]
IP-Config: Guessing netmask 255.255.255.0
IP-Config: Complete:
device=eth0, addr=192.168.1.1, mask=255.255.255.0,
gw=255.255.255.255,
host=192.168.1.1, domain=, nis-domain=(none),
bootserver=255.255.255.255, rootserver=192.168.1.254, rootpath=
dm9000 dm9000: eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1
VFS: Mounted root (nfs filesystem) on device 0:12.
Freeing init memory: 128K
nfs: server 192.168.1.254 not responding, still trying
nfs: server 192.168.1.254 not responding, still trying
Answering my own post in the hope it can help others at a later time.
This is caused by the dm9000 ethernet on this board not liking the UDP
rsize/wsize change that was made in kernel 2.6.38. As is often if not
always the case in Unix, there's more than one solution. :)
1. Change the boot params. "nfsroot=192.168.1.254:/NFSRoot,proto=tcp"
worked fine, but this change would need to be made on every box/board.
2. Hack the kernel. :) In file fs/nfs/nfsroot.c, find
#define NFS_DEF_OPTIONS "udp"
and change it to
#define NFS_DEF_OPTIONS "vers=2,udp,rsize=4096,wsize=4096"
--
Ron McDowell
San Antonio TX
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