ReiserFS and NFS?

ReiserFS and NFS?

[Anders Widman]

   Hello!

   I am trying to use ReiserFS with NFS to work nicely, but I ran into
   troubles  exporting root (/). I am getting the following error when
   a   client   tries  to  connect  to  the  root  export  (I am using
   ReiserFS on root filesystem):

      rpc.mountd: getfh failed: Operation not permitted

   After  browsing around different mailing lists and read suggestions
   about Kernel and NFS utils I found that someone said that there was
   needed patches to use ReiserFS with NFS?

   Right now my exports file looks like this:

         /usr/src/       192.168.0.100(rw,no_root_squash,insecure)
         /               192.168.0.100(rw,no_root_squash,insecure)

   The /usr/src/ share does work.

   Is this something someone might know how to fix?

   Regards,
   Anders Widman

Re: ReiserFS and NFS?

[Oleg Drokin]

Hello!

On Tue, Sep 03, 2002 at 05:56:52PM +0200, Anders Widman wrote:
> 
>    I am trying to use ReiserFS with NFS to work nicely, but I ran into
>    troubles  exporting root (/). I am getting the following error when
>    a   client   tries  to  connect  to  the  root  export  (I am using
>    ReiserFS on root filesystem):
>       rpc.mountd: getfh failed: Operation not permitted
>    After  browsing around different mailing lists and read suggestions
>    about Kernel and NFS utils I found that someone said that there was
>    needed patches to use ReiserFS with NFS?

Hmmm.
What kernel are you using? What nfs server?
2.4.19 with stock knfsd:
angband:~ # cat /etc/exports
/ (ro)

bowl:~# mount angband:/ /mnt/testfs -t nfs
bowl:~# ls /mnt/testfs/
.   bin   cdrecorder  dev  floppy  lib    mnt  proc    root  testfs0  tmp  var
..  boot  cdrom       etc  home    media  opt  rescue  sbin  testfs1  usr

Changing config:
angband:~ # cat /etc/exports
/ (rw,no_root_squash,insecure)
angband:~ # exportfs -a
exportfs: No host name given with / (rw,no_root_squash,insecure), suggest *(rw,no_root_squash,insecure) to avoid warning

bowl:~# ls /mnt/testfs/
.    boot        dev     home   mnt   rescue  testfile  tmp
..   cdrecorder  etc     lib    opt   root    testfs0   usr
bin  cdrom       floppy  media  proc  sbin    testfs1   var

Everything works ok.

But now (/rescue is another mount point):
bowl:~# mount angband:/rescue /mnt/testfs -t nfs

Sep  4 10:06:17 angband rpc.mountd: authenticated mount request from 212.16.7.82:916 for /rescue (/)
Sep  4 10:06:17 angband rpc.mountd: getfh failed: Operation not permitted

>    Right now my exports file looks like this:
>          /usr/src/       192.168.0.100(rw,no_root_squash,insecure)
>          /               192.168.0.100(rw,no_root_squash,insecure)

>    Is this something someone might know how to fix?

What if you allow anyone to connect (use * instead of address?)
Look into logs on on nfs server side for more clues, enable debug.

Basically I do not think yo are experiencing reiserfs problem, but it rather
looks like nfs server configuration problem.

I hope you have not forgot to to 'exportfs -a' after changing /etc/exports.

Bye,
    Oleg

Re: ReiserFS and NFS?

[Anders Widman]

> Hello!

> On Tue, Sep 03, 2002 at 05:56:52PM +0200, Anders Widman wrote:
>> 
>>    I am trying to use ReiserFS with NFS to work nicely, but I ran into
>>    troubles  exporting root (/). I am getting the following error when
>>    a   client   tries  to  connect  to  the  root  export  (I am using
>>    ReiserFS on root filesystem):
>>       rpc.mountd: getfh failed: Operation not permitted
>>    After  browsing around different mailing lists and read suggestions
>>    about Kernel and NFS utils I found that someone said that there was
>>    needed patches to use ReiserFS with NFS?

> Hmmm.
> What kernel are you using? What nfs server?

Using 2.4.19 with nfsd running.

> 2.4.19 with stock knfsd:
> angband:~ # cat /etc/exports
> / (ro)

> bowl:~# mount angband:/ /mnt/testfs -t nfs
> bowl:~# ls /mnt/testfs/
> .   bin   cdrecorder  dev  floppy  lib    mnt  proc    root  testfs0  tmp  var
> ..  boot  cdrom       etc  home    media  opt  rescue  sbin  testfs1  usr

> Changing config:
> angband:~ # cat /etc/exports
> / (rw,no_root_squash,insecure)
> angband:~ # exportfs -a
> exportfs: No host name given with / (rw,no_root_squash,insecure), suggest *(rw,no_root_squash,insecure) to avoid warning

> bowl:~# ls /mnt/testfs/
> .    boot        dev     home   mnt   rescue  testfile  tmp
> ..   cdrecorder  etc     lib    opt   root    testfs0   usr
> bin  cdrom       floppy  media  proc  sbin    testfs1   var

> Everything works ok.

> But now (/rescue is another mount point):
> bowl:~# mount angband:/rescue /mnt/testfs -t nfs

> Sep  4 10:06:17 angband rpc.mountd: authenticated mount request from 212.16.7.82:916 for /rescue (/)
> Sep  4 10:06:17 angband rpc.mountd: getfh failed: Operation not permitted

>>    Right now my exports file looks like this:
>>          /usr/src/       192.168.0.100(rw,no_root_squash,insecure)
>>          /               192.168.0.100(rw,no_root_squash,insecure)

>>    Is this something someone might know how to fix?

> What if you allow anyone to connect (use * instead of address?)
> Look into logs on on nfs server side for more clues, enable debug.

I  don't think I tried using only a '*' instead of an address. Will do
that.

> Basically I do not think yo are experiencing reiserfs problem, but it rather
> looks like nfs server configuration problem.

I  was out of clues, therefore I posted here as there was someone that
mentioned ReiserFS and NFS problems somewhere.

> I hope you have not forgot to to 'exportfs -a' after changing /etc/exports.

Of course not =).. And I tried rebooting too.

Anyway, thanks for your response!

Regards,
Anders

> Bye,
>     Oleg