Re: [ts-7000] Re: problem about mount nfsroot

[Xiang Lu <>]

Dear all,

When loading the nfs file system from a nfs server, I always get the following error information.

rpcbind: server 192.168.0.100 not responding, timed out

Root-NFS: Unablee to get mountd port number from server, using default

Root-NFS: Server returned error -5 while mounting /tmp/arm/nfsroot

I think that should be the abnormal state on my NFS server. I did double check the configuration of NFS server. I can ping the server from another pc. I guess that the problem is on the portmap. Every time I start it, I will get the following hints.

restart portmap

resart: Rejected send message, 1 matched rules; type="method_call", sender=""......

Could anybody please shed the light on the problem? Thank you.

Best, 

Xiang

---

From: Xiang Lu <>
To:
Sent: Fri, July 16, 2010 1:22:04 AM
Subject: Re: [ts-7000] Re: problem about mount nfsroot

 

Dear Charles,

I found a file, called as "ts7250_nand- new-partition- table.patch" . Do you mean this patch? Should I patch this file after the default path script? Thank you.

Best Regards,

Xiang

---

From: Xiang Lu < com>
To: .com
Sent: Fri, July 16, 2010 1:11:15 AM
Subject: Re: [ts-7000] Re: problem about mount nfsroot

 

Dear Charles,

Thank you for your suggestions. I am not sure about the way to get the nand partition patch. I am using Matthieu's patch for 2.6.32.3. You mean I should use an old version patch? My objective is to cross compile 2.6.32.3. Can I choose 2.6.34 patch for my 2.6.32 kernel to fix the nand partition patch? Or, should I abstract the partition related patch file in the 2.6.32 patch? Thank you for your further explanation.

Best Regards,

Xiang 

---

From: Charles <charliem_1216@ yahoo.com>
To: .com
Sent: Fri, July 16, 2010 12:38:32 AM
Subject: [ts-7000] Re: problem about mount nfsroot

 

Hi --

--- In .com, Xiang Lu <> wrote:
>
> Dear all,
>
> I am trying to load a NFS Root file system from a NFS server after loading a new
> 2.6.32.3 kernel. But when I input the following command, I get the error
> information about "Unable to mount root fs via NFS".
>
> I googled the related messages. But I am not sure about the reasons of this
> problem. Now, I am using the root file system downloaded from the website of TS,
> http://www.embedded arm.com/software /arm-linux- 26-ts72xx. php. Should I
> manufacture my own root file system using busybox? Or, it is fine if I use the
> offered root file for 2.6.21 kernel?
>
> I posted the error information during my load process. I am a newbie for the
> embedded system. If my question is too naive, I am sorry for that. I really
> appreciate any comments, suggestions and instructions about the kernel update
> issue. Thank you so much.
>
> Best,
> Xiang
>
> RedBoot> exec -c "console=ttyAM0, 115200 ip=dhcp
> nfsroot=152. 14.97.29: /tftpboot/ tmp
> Unbalanced string!
> Using base address 0x00218000 and length 0x001e4170
> Uncompressing
> Linux....... ......... ......... ......... ......... ......... ......... ......... ......... ......
>
> Linux version 2.6.32.3-m (gcc version 3.4.4 (release)
> (CodeSourcery ARM 2005q3-2)) #1 P0
> CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=40007177
> CPU: VIVT data cache, VIVT instruction cache
> Machine: Technologic Systems TS-72xx SBC
> Memory policy: ECC disabled, Data cache writeback
> Built 1 zonelists in Zone order, mobility grouping on. Total pages: 9040
> Kernel command line: console=ttyAM0, 115200 ip=dhcp
> nfsroot=152. 14.97.29: /tftpboot/ tmp

> Creating 3 MTD partitions on "ts7250-nand" :
> 0x000000000000- 0x000000004000 : "TS-BOOTROM"
> mtd: partition "TS-BOOTROM" doesn't end on an erase block -- force read-only
> 0x000000004000- 0x000007d04000 : "Linux"
> mtd: partition "Linux" doesn't start on an erase block boundary -- force
> read-only
> 0x000007d04000- 0x000008000000 : "RedBoot"
> mtd: partition "RedBoot" doesn't start on an erase block boundary -- force
> read-only

You will need the nand partition patch later, to fix this. I think Matt has it now again, or you may have to get it from an old version of his patch set.

> Sending DHCP requests ., OK
> IP-Config: Got DHCP answer from 0.0.0.0, my address is 152.14.97.47
> IP-Config: Complete:
> device=eth0, addr=152.14. 97.47, mask=255.255. 254.0, gw=152.14.96. 1,
> host=ts7250- eb2-3042- 1, domain=ece.ncsu. edu, nis-domain=( none),
> bootserver=0. 0.0.0, rootserver=152. 14.97.29, rootpath=
> Looking up port of RPC 100003/2 on 152.14.97.29
> Looking up port of RPC 100005/1 on 152.14.97.29
> Root-NFS: Server returned error -13 while mounting /tftpboot/tmp

You are getting Err -13, which means 'permission denied'. Check that you have read access and write access to your nfsroot location. Probably even read access is missing; otherwise I believe it would mount and then get an error when trying to write to the rootfs.

If you fix the permission issue, this rootfs should work OK, I think. No need to rebuild the rootfs for the permission issue.

regards, ......... Charlie

> VFS: Unable to mount root fs via NFS, trying floppy.
> VFS: Cannot open root device "<NULL>" or unknown-block( 2,0)
> Please append a correct "root=" boot option; here are the available partitions:
> 1f00 16 mtdblock0 (driver?)
> 1f01 128000 mtdblock1 (driver?)
> 1f02 3056 mtdblock2 (driver?)
> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block( 2,0)
>

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