nfs questions!!!

[bruce]

hi...

i've kind of setup nfs... but i have some questions/issues.

1) how do i allow the nfs on the client to always be active. currently i've
had to do a "mount 192...:/foo/data /data" to be able to share the drive.. i
know there's a way to setup the system to have the nfs always setup on
boot-up.

2) i add a file to the shared dir from the nfs system. i try to edit it from
a client, and i can't. as a client, i can copy the file to my local dir, and
edit it.. but as a client, i can't overwrite the file on the nfs share.

any pointers/thoughts would be helpful... i'm missing something in the docs
that i've bben looking at.

thanks

-bruce

[Frank Cox]

On Mon, 31 Jul 2006 09:30:53 -0700
bruce  wrote:
> how do i allow the nfs on the client to always be active. currently i've
>
> had to do a "mount 192...:/foo/data /data" to be able to share the drive.. i
> know there's a way to setup the system to have the nfs always setup on
> boot-up.

Edit /etc/fstab and include the fileserver in that.

Example:

fileserver:/nas/NASDisk-00002/files  /mnt/fileserver  nfs  defaults     0 0
> i add a file to the shared dir from the nfs system. i try to edit it from
>
> a client, and i can't. as a client, i can copy the file to my local dir, and
> edit it.. but as a client, i can't overwrite the file on the nfs share.

The /etc/exports file on your fileserver needs to have (rw) specified instead
of (ro).

[bruce]

hi frank!

i looked in the /etc/exports file.

i've made a number of changes trying to resolve this issue.

/college		192.168.1.*(ro)

i've tried (ro), (rw,ro), (ro,rw), etc...

on my client, i've done a umount/mount after each change. i've also
stopped/restarted the nfs before/after each change to the exports file.

on the client, when i try to edit a file, i still get that it's a readonly
file...

any thoughts... (i'm running a linux FC3 server, with a FC4 client)

thanks

-----Original Message-----
From: Frank Cox [mailto:[e-mail]]
Sent: Monday, July 31, 2006 9:37 AM
To: For users of Fedora Core releases
Cc: [e-mail]
Subject: Re: nfs questions!!!

On Mon, 31 Jul 2006 09:30:53 -0700
bruce  wrote:
> how do i allow the nfs on the client to always be active. currently

i've
> had to do a "mount 192...:/foo/data /data" to be able to share the drive..

i
> know there's a way to setup the system to have the nfs always setup on
> boot-up.

Edit /etc/fstab and include the fileserver in that.

Example:

fileserver:/nas/NASDisk-00002/files  /mnt/fileserver  nfs  defaults     0 0
> i add a file to the shared dir from the nfs system. i try to edit it

from
> a client, and i can't. as a client, i can copy the file to my local dir,

and
> edit it.. but as a client, i can't overwrite the file on the nfs share.

The /etc/exports file on your fileserver needs to have (rw) specified
instead
of (ro).

--
MELVILLE THEATRE ~ Melville Sask ~ http://theatre.sasktelwebsite.net

[Justin Willmert]

bruce wrote:
> hi frank!
>
> i looked in the /etc/exports file.
>
> i've made a number of changes trying to resolve this issue.
>
> /college		192.168.1.*(ro)
>
> i've tried (ro), (rw,ro), (ro,rw), etc...

Do only (rw). Take out the 'ro'.
> on my client, i've done a umount/mount after each change. i've also
> stopped/restarted the nfs before/after each change to the exports file.
>
> on the client, when i try to edit a file, i still get that it's a readonly
> file...
>
> any thoughts... (i'm running a linux FC3 server, with a FC4 client)
>
> thanks

Justin Willmert

[Thomas Paine]

Do you have a user with the same name and password on both hosts?
Does said user have write permissions on the directory?
Is this root? Then you need a change to your exports line.

/video  10.10.10.0/24(rw,no_root_squash)

That is the line I use for my mythbox.

[bruce]

hi...

further research hasn't solved the issue.

i have the server nfs
  /etc/exports
     /college		192.168.1.*(rw)

i have the client nfs/mount
   mount -o rw  192.168.1.52:/college	/college

when i add a file to the share as client1, the client and the nfs server can
edit the file with no problem. the other clients can't!! in fact, the file
attributes are changed/set to some very large number...

if i go to the nfs server, and i  make the changes to the file
(chmod,chgrp,chown) then the settings are somewhat seen by the other
clients, and each client can then edit the given files on the nfs share...

i would have thought that there should be a way to set up the nfs, so that
client1 can create/add a file, and that client2 can edit the file, and vice
versa....

searching via google seems to indicate that this should work, but i can't
see how to get it to perform.

thanks

ps. yeah, there are read/write privs on the nfs mount for the clients
    and yeah, the user is the same on each machine

-----Original Message-----
From: Thom Paine [mailto:[e-mail]]
Sent: Monday, July 31, 2006 10:49 AM
To: [e-mail]; For users of Fedora Core releases
Subject: Re: nfs questions!!!

Do you have a user with the same name and password on both hosts?
Does said user have write permissions on the directory?
Is this root? Then you need a change to your exports line.

/video  10.10.10.0/24(rw,no_root_squash)

That is the line I use for my mythbox.

--
-=/>Thom

[Frank Cox]

On Mon, 31 Jul 2006 11:43:59 -0700
bruce  wrote:
> further research hasn't solved the issue.

Have you done "exportfs -r" after making changes to the /etc/exports file?

[Thomas Paine]

On 7/31/06, bruce  wrote:
> hi...
>
> further research hasn't solved the issue.

Let me log into my boxes and try a test. I usually have root mount the
shares at boot time and I am normally editing files as root when I'm
working with the filesystem.

[Aaron Konstam]

On Mon, 2006-07-31 at 11:43 -0700, bruce wrote:
> hi...
>
> further research hasn't solved the issue.
>
> i have the server nfs
>   /etc/exports
>      /college		192.168.1.*(rw)
>
> i have the client nfs/mount
>    mount -o rw  192.168.1.52:/college	/college
>
> when i add a file to the share as client1, the client and the nfs server can
> edit the file with no problem. the other clients can't!! in fact, the file
> attributes are changed/set to some very large number...

You must be doing something wrong since we do this all the time. Note:
1, Do oyu mean the owner eis a large number = -2 == nobody. That is a
problem since that will affect accessing the file.
2. You have nfs and nfslock initscripts running on the server.
3. The mounting should be done via a fstab as type nfs.

Maybe posting you exports file and fstab would help.
> if i go to the nfs server, and i  make the changes to the file
> (chmod,chgrp,chown) then the settings are somewhat seen by the other
> clients, and each client can then edit the given files on the nfs share...
>
> i would have thought that there should be a way to set up the nfs, so that
> client1 can create/add a file, and that client2 can edit the file, and vice
> versa....
>
> searching via google seems to indicate that this should work, but i can't
> see how to get it to perform.
>
> thanks
>
> ps. yeah, there are read/write privs on the nfs mount for the clients
>     and yeah, the user is the same on each machine
>
> -----Original Message-----
> From: Thom Paine [mailto:[e-mail]]
> Sent: Monday, July 31, 2006 10:49 AM
> To: [e-mail]; For users of Fedora Core releases
> Subject: Re: nfs questions!!!
>
> Do you have a user with the same name and password on both hosts?
> Does said user have write permissions on the directory?
> Is this root? Then you need a change to your exports line.
>
> /video  10.10.10.0/24(rw,no_root_squash)
>
> That is the line I use for my mythbox.
>
> --
> -=/>Thom

--
=======================================================================
In my experience, if you have to keep the lavatory door shut by
extending your left leg, it's modern architecture. -- Nancy Banks Smith
=======================================================================
Aaron Konstam telephone: [phone] e-mail: [e-mail]

[Tim]

On Mon, 2006-07-31 at 10:37 -0700, bruce wrote:
> i've tried (ro), (rw,ro), (ro,rw), etc...

"ro" means read-only, "rw" means readable and writable, you'd do one or
the other, not both (it's contradictory).

[Tim]

On Mon, 2006-07-31 at 13:48 -0400, Thom Paine wrote:
> Do you have a user with the same name and password on both hosts?

That's not how NFS works.  You need to have the same user ID
(numerical), and that's it.  The local box associates a user name and
password with local users.

i.e. user 500 is use 500 on both boxes (unless you remap user IDs across
NFS).  It doesn't matter whether use 500 is john on one and fred on the
other.  And the passwords aren't compared, either.

If you've set boxes up so that you end up being user 500 on one of them,
but 501 on another, you're different users on both.  You've either got
to do some user ID remapping between boxes through NFS (I've no advice
on how to do that to give you), or you change users on one of the boxes
to match.

[Thomas Paine]

On 8/1/06, Tim  wrote:
> On Mon, 2006-07-31 at 13:48 -0400, Thom Paine wrote:
> > Do you have a user with the same name and password on both hosts?
>
> That's not how NFS works.  You need to have the same user ID
> (numerical), and that's it.  The local box associates a user name and
> password with local users.

Oh, my bad. I was getting user 500 on both boxes as I'm the only user on both.
Thanks for clearing that up. Now I know. I thought it was a user thing.

[Tim]

Thom Paine:
> > > Do you have a user with the same name and password on both hosts?

Tim:
> > That's not how NFS works.  You need to have the same user ID
> > (numerical), and that's it.  The local box associates a user name and
> > password with local users.

Thom Paine:
> Oh, my bad. I was getting user 500 on both boxes as I'm the only user on both.
> Thanks for clearing that up. Now I know. I thought it was a user thing.

Samba typically works that way, of going by the usernames being the
same.  But it doesn't have to, different usernames can be mapped as
being the same users between boxes.