MCIMX6Q-SDB Linux, nfs not working

[ambiguity]

Hi,

I am having an issue getting the MCIMX6Q-SDB up and running with Linux (L3.0.35 untouched).  My goal is to get it up and running before making modifications.  I am trying to get it to run over NFS.  I have thumbed through as many forums over the past couple of days and it is still not working.  It is able to find the image and start, but when it starts performing root operations (my suspicion) they are getting denied and nothing after.

Does anyone know how to resolve this?

Here is the log:

File transfer via NFS from server 192.168.2.101; our IP address is 192.168.2.100
Filename '/home/user/rootfs_imx6/boot/uImage'.
Load address: 0x10800000
Loading: #################################################################
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done
Bytes transferred = 3922500 (3bda44 hex)
## Booting kernel from Legacy Image at 10800000 ...
   Image Name:   Linux-3.0.35-2310-gc27cb38
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    3922436 Bytes =  3.7 MB
   Load Address: 10008000
   Entry Point:  10008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
Linux version 3.0.35-2310-gc27cb38 (removed) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #4 SMP PREEMPT Fri Apr 12 18:04:01 CEST 2013
CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d
CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: Freescale i.MX 6Quad/DualLite/Solo Sabre-SD Board

..

..

..

Sending DHCP requests ., OK

IP-Config: Got DHCP answer from 192.168.2.1, my address is 192.168.2.100

IP-Config: Complete:

     device=eth0, addr=192.168.2.100, mask=255.255.255.0, gw=192.168.2.1,

     host=192.168.2.100, domain=, nis-domain=(none),

     bootserver=192.168.2.1, rootserver=192.168.2.101, rootpath=

VFS: Mounted root (nfs filesystem) on device 0:12.

Freeing init memory: 208K

starting pid 1423, tty '': '/etc/rc.d/rcS'

Mounting /proc and /sys

mount: permission denied (are you root?)

mount: permission denied (are you root?)

/etc/rc.d/init.d/udev: line 11: /proc/sys/kernel/hotplug: No such file or directory

mount: permission denied (are you root?)

mknod: /dev/console: Operation not permitted

mknod: /dev/null: File exists

Starting the hotplug events dispatcher udevd

Synthesizing initial hotplug events

mkdir: can't create directory '/dev/pts': File exists

mount: permission denied (are you root?)

mkdir: can't create directory '/dev/shm': File exists

Setting the hostname to freescale

hostname: sethostname: Operation not permitted

Mounting filesystems

mount: permission denied (are you root?)

mount: permission denied (are you root?)

mount: permission denied (are you root?)

cat: can't open '/proc/cmdline': No such file or directory

ln: /etc/mtab: File exists

mount: permission denied (are you root?)

chown: /home/user/.rhosts: Operation not permitted

chown: /home/user: Operation not permitted

chown: /home/user: Operation not permitted

cat: can't open '/proc/devices': No such file or directory

starting pid 1463, tty '': '/etc/rc.d/rc_gpu.S'

cat: can't open '/proc/cpuinfo': No such file or directory

starting pid 1469, tty '': '/etc/rc.d/rc_mxc.S'

I believe the share/export on the VM is setup correctly.  It is setup exactly the same way the prev. project (i.mx35) is setup.

A little more background... I compiled the source using LTIB (Ubuntu 9.04) and copied the output rootfs to another Ubuntu VM (12.04) (since this contained all our necessary software/ tools).

Lastly, I am kind of new to this... I am expecting there to be a "serial console" so I can query directories and what not... is this by default?  Seial console was selected in the menuconfig.

Any ideas?

Thanks!

[ambiguity]

Hi Leo,

Thank you for all your help so far... my ulitmate goal I guess is to be able to compile the Kernel in Ubuntu 12.04.  As a near last ditch effort, I decided to go back to the recommened version of Ubuntu 9.04 and set up the NFS server there and it worked!  Board comes up with a login.

All our source and tools are one the other VM and there is no support for the older version so updating is kind of a pain.  Not really sure where to turn to for assistance in my quest.  Any thoughts, suggestions?

All I did was copy the output rootfs & source from LTIB into the other VM (over network) and compile... the only thing I find is when I used "make menuconfig" I see there is no option for Crosscompiler (no string setting), but I think it is supposed to be filled out.  I will look through the BSP porting guide - but maybe you have a suggestion.

Thank you again!

[LeonardoSandova]

my 2cents on this issue:

1. use a native machine instead of VM.

2. make sure the row on exports file has these params: *(rw,sync,no_root_squash,no_subtree_check)

3. you will reach the prompt on the serial console at the end, no need to do anything extra on the kernel menuconfig

Leo

[ambiguity]

Thank you for the quick response.

1. We are working on getting a native machine setup

2. The exports file has those params (+ some additional), but I tried your recommendation as well - no success

3. Thank you... I haven't been able to get it up and running for a while I was starting to wonder.

It is as if the board/kernel cannot modify the files on the VM.  This exact setup works on an imx35.  I am questioning my file copy (output rootfs) from 9.04 to 12.05.  Don't see how this could be though.

I am wondering if maybe I am missing an important env variable.

[LeonardoSandova]

Are you able to mount the NFS directory in the VM?. In the other hand, The instructions on the User Guide have been fully tested, so make sure your u-boot values match with these.

Leo

[ambiguity]

Yes, I could mount it in the same VM and I opened another VM and was able to mount / edit files (mkdir, etc.) - and see them on the other VM.

I will double check my u-boot values - Most of my issues up til now have been with uboot env variables - tried to use the same/similiar settings from our previous development.