Unable to mount using NFS

Altera_Forum · ‎07-08-2006

Hello all .. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

Sorry , i asked about almost the same point days ago ... but beleive me .. I waisted a lot of time ... and still .. i cant make it work ..

i want to mount a folder from my linux PC to the uClinux.. using NFS ..

i followed what was said to me ..

a strange error came up .. maybe i did not include a certain package while doing the menuconfig

the error is:

<div class='quotetop'>QUOTE </div>

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RPC: unable to receive: errno = No route to host[/b]

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also when i do telnet to my PC

<div class='quotetop'>QUOTE </div>

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telnet: unable to connect to remote host: No route to host[/b]

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but i can ping the server from client and vice versa !

i checked the NFS server ..it seems running.. "rpcinfo -p" tells me that many nfs ports are opened .. i have versions 2,3 and 4 running ..

but still cant mount !

and i cant understand !!! http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/mad.gif

pls help ..

Thanks a lot..

Yours,

Tarek http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif

Altera_Forum · ‎07-10-2006

sorry for late. I had a vacation last week.

did you open the firewall on your server?

or try to disable firewall totally.

service iptables stop

Altera_Forum · ‎07-10-2006

--- Quote Start ---

originally posted by hippo@Jul 10 2006, 07:15 AM

sorry for late. i had a vacation last week.

did you open the firewall on your server?

or try to disable firewall totally.

service iptables stop

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=16732)</div>

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ok.. i stopped the firewall .. double and even tripple checked that the service is running correctly on the server .. i tried with another PC linux ..

from the other pc i typed :

showmount -e <myIP>

the shared folder appeared after a while .. (about 5 seconds at first..faster next)

but when i tried to mount .. it said" RPC timeout" after a loong while ..

i tried to mount from the uCinux .. it said the following:

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

/> mount 192.168.0.122:/home/tarek/Desktop /mnt

mount: RPC: Timed out

mount: nfsmount failed: Bad file descriptor

mount: Mounting blaBla on Blabla failed: Invalid Argument[/b]

--- Quote End ---

Did you see such thing before..? .. sorry ..i am still a starter ..

I had spent about 4 hours till now just trying .. no results.. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/blink.gif

thanks for helping .. and waiting for the next clue from you .. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

Bye

Altera_Forum · ‎07-10-2006

i also tried the following ..

/> mount -t nfs 192.168.0.122:/home/tarek/Desktop /mnt
portmap: server localhost not responding, timed out
RPC: failed to contact portmap (errno -5).
portmap: server localhost not responding, timed out
RPC: failed to contact portmap (errno -5).
lockd_up: makesock failed, error=-5
portmap: server localhost not responding, timed out
RPC: failed to contact portmap (errno -5).
/>

also tried the " -o nfsvers=2 " .. the same http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/mad.gif

Altera_Forum · ‎07-10-2006

--- Quote Start ---

originally posted by tarekeldeeb+jul 10 2006, 01:57 pm--><div class='quotetop'>quote (tarekeldeeb @ jul 10 2006, 01:57 pm)</div>

--- quote start ---

<!--quotebegin-hippo@Jul 10 2006, 07:15 AM

sorry for late. i had a vacation last week.

did you open the firewall on your server?

or try to disable firewall totally.

service iptables stop

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=16732)</div>

--- Quote End ---

ok.. i stopped the firewall .. double and even tripple checked that the service is running correctly on the server .. i tried with another PC linux ..

from the other pc i typed :

showmount -e <myIP>

the shared folder appeared after a while .. (about 5 seconds at first..faster next)

but when i tried to mount .. it said" RPC timeout" after a loong while ..

i tried to mount from the uCinux .. it said the following:

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

/> mount 192.168.0.122:/home/tarek/Desktop /mnt

mount: RPC: Timed out

mount: nfsmount failed: Bad file descriptor

mount: Mounting blaBla on Blabla failed: Invalid Argument[/b]

--- Quote End ---

Did you see such thing before..? .. sorry ..i am still a starter ..

I had spent about 4 hours till now just trying .. no results.. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/blink.gif

thanks for helping .. and waiting for the next clue from you .. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

Bye

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=16742)</div>

[/b]

--- Quote End ---

You need the -o nolock in mount flags.

mount -t nfs -n -o nolock,rsize=1024,wsize=1024 192.168.1.2:/home/nios2 /mnt/nfs ( eg, server ip 192.168.1.2)

Look in the wiki carefully.

But why you failed to mount nfs from another linux pc?

Altera_Forum · ‎07-10-2006

--- Quote Start ---

originally posted by hippo@Jul 10 2006, 08:08 AM

you need the -o nolock in mount flags.

mount -t nfs -n -o nolock,rsize=1024,wsize=1024 192.168.1.2:/home/nios2 /mnt/nfs ( eg, server ip 192.168.1.2)

look in the wiki carefully.

but why you failed to mount nfs from another linux pc?

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=16745)</div>

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i did ... the same error

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

mount: RPC: Timed out

mount: nfsmount failed: Bad file descriptor

mount: Mounting blaBla on Blabla failed: Invalid Argument[/b]

--- Quote End ---

i began thinking that the server itself has a problem .. i have fedora core5 .. so i tried the server on a different pc .. having fedora core 4 .. the same results :S

when i type " rpcinfo -p " ..

i can see many prgz.. portmapper,status,nfs,nlockmgrrquotad,mountd ..

all of them have both TCP and UDP versions .. with more than one version..

i am very confused http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/sad.gif

thanks for your reply..

and still waiting ... for the next clue . http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

Altera_Forum · ‎07-10-2006

sorry .. for continuous replies..

i tried this

mount -t nfs -o nolock 192.168.0.122:/home/tarek/Desktop /mnt/test

i did not set the rsize or the wsize.. it did NOT give an error ..

but when i tried to " cd /mnt/test " it gave a " permission denied " http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/blink.gif

Darkness inside confusion ,, this is how i feel now http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/laugh.gif

Altera_Forum · ‎07-10-2006

--- Quote Start ---

originally posted by tarekeldeeb@Jul 10 2006, 02:31 PM

sorry .. for continuous replies..

i tried this

mount -t nfs -o nolock 192.168.0.122:/home/tarek/desktop /mnt/test

i did not set the rsize or the wsize.. it did not give an error ..

but when i tried to " cd /mnt/test " it gave a " permission denied " http://forum.niosforum.com/work2/style_emoticons/<#emo_dir#>/blink.gif

darkness inside confusion ,, this is how i feel now http://forum.niosforum.com/work2/style_emoticons/<#emo_dir#>/laugh.gif

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=16749)</div>

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what is your /etc/exports file ?

/home/nios2 192.168.1.0/255.255.255.0(rw,no_root_squash,sync)

you need the no_root_squas flags,

And try disable selinux in FC4/FC5 with "securify level" config.

Cheer up. you are not alone.

Altera_Forum · ‎07-10-2006

HIPPO ... thanks a LOOOT http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

it appeared to be permission issue ..

i changed the permission of " /home" and "/home/tarek" and "/home/tarek/Desktop" so that everybody can change the files.. it worked ..

about your question: yes i use the flag:

<div class='quotetop'>QUOTE </div>

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/home/tarek/Desktop 192.168.0.0/255.255.255.0(rw,no_root_squash,sync)[/b]

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but .. a last question please .. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/sad.gif

the mount works as read-only.. i need write access to save my outputs on my PC .. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/huh.gif

Anyway .. THANKS A LOT .. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

Altera_Forum · ‎07-10-2006

you are very close now.

you'd better not use the Desktop dir, it is used by desktop manager.

try

mkdir /home/nios2

chmod -R a+rw /home/nios2

and export /home/nios2,

Altera_Forum · ‎07-10-2006

--- Quote Start ---

originally posted by hippo@Jul 10 2006, 04:38 PM

you are very close now.

you'd better not use the desktop dir, it is used by desktop manager.

try

mkdir /home/nios2

chmod -r a+rw /home/nios2

and export /home/nios2,

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i tried it .. i gave the same result !!

i tried making and mounting /uc (i thought the permission of /home had problems)

this also gave the same results http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/sad.gif

Hippo .. thanks for your patience ..

could this be a client problem ?

Altera_Forum · ‎07-10-2006

Tarek,

Please take a look at your Linux box's message log (/var/log/messages or /var/log/nfs, or something like that).

For successful unmounting/mounting of NFS shares, you should see something like the following:

Jul 10 14:30:06 <your server> mountd: authenticated unmount request from <your client>:820 for <your_share> (<your_share>)
Jul 10 14:30:32 <your server> mountd: authenticated mount request from <your client>:915 for <your_share> (<your_share>)

NOTE: <your_server>,<your client>, and <your_share> are specific to your system's configuration.

This is the way I always debug NFS share permissions issues....and it hasn't failed me yet.

Also, as hippo suggests, please ensure that your /etc/exports file looks something like this, with, perhaps, multiple shares defined.

<your share> <your client>(rw,sync,no_root_squash)

Cheers,

- slacker

Altera_Forum · ‎07-11-2006

I tested again on 2c35 dev board and FC5, but it can read/write nfs mount without problem.

http://nioswiki.jot.com/wikihome/operating...zimage_std_2c35 (http://nioswiki.jot.com/wikihome/operatingsystems/%c2%b5clinux/tryoutuclinux/zimage_std_2c35)

it is the default nios2 kernel config as in my post of uClinux-dist-test.

enabled smc91111 , nfs, and nfs v3.

enabled mount in busybox.

Altera_Forum · ‎07-12-2006

--- Quote Start ---

originally posted by slacker@Jul 10 2006, 11:46 PM

tarek,

please take a look at your linux box's message log (/var/log/messages or /var/log/nfs, or something like that).

for successful unmounting/mounting of nfs shares, you should see something like the following:

jul 10 14:30:06 <your server> mountd: authenticated unmount request from <your client>:820 for <your_share> (<your_share>) jul 10 14:30:32 <your server> mountd: authenticated mount request from <your client>:915 for <your_share> (<your_share>)

note: <your_server>,<your client>, and <your_share> are specific to your system's configuration.

this is the way i always debug nfs share permissions issues....and it hasn't failed me yet.

also, as hippo suggests, please ensure that your /etc/exports file looks something like this, with, perhaps, multiple shares defined.

<your share> <your client>(rw,sync,no_root_squash)

cheers,

- slacker

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=16777)</div>

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yes i find such messages in var/log/messages but with different port numbers.

and i also double checked the export file

no more ideas?

Altera_Forum · ‎07-12-2006

<<<< FINALLY DONE >>>>

Hippo i tried your zImage .. same bad results.. read only..

so i am sure it is a server issue .. not client problem ..

i tried reading some forums.. and guessed it could be the SElinux ..

and it was http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

I disabled it .. every thing went fine http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif

Hippo and Slacker .. thanks a lot for your warm support http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

Thanks everyone

Bye http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif