Share ZFS file system read/write to root

Dave

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Jun 25, 2009, 12:04:56 PM6/25/09

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I'm trying to share a NFS file system from a server 'disk' to a client 't2'

On the server

root@disk:~# zfs set sharenfs='rw=128.208.128.194,root=128.208.128.194'
tank/Solaris-SPARC

root@disk:~# zfs share tank/Solaris-SPARC

On the client, I can't seem to sort out the options to make the file
system read/writable to root.

root@t2 # mount -F nfs disk:/tank/Solaris-SPARC /usr/local/tmp
nfs mount: mount: /usr/local/tmp: Permission denied

I thought the option rw=root' had to be given, though I admin I can't
see that in the man page. Anyway, it does not work.

root@t2 # mount -F nfs -o rw=root disk:/tank/Solaris-SPARC /usr/local/tmp
nfs mount: mount: /usr/local/tmp: Permission denied

If I don't set the option on the server to make it writable to root,
then the file system will mount on the client ok. But as soon as I have
set it to be writable to root, so I can't mount it.

Any ideas?

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cindy

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Jun 25, 2009, 12:30:37 PM6/25/09

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Hi Dave,

I haven't had a chance to reproduce this problem, but I think it might
be an underlying permission problem on the /usr/local/tmp mount point.

Could you try mounting this file system on the client on something
like
/mnt? If it mounts on /mnt, then you need to fix the permission
problem
on /usr/local/tmp.

Cindy

Richard B. Gilbert

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Jun 25, 2009, 1:05:13 PM6/25/09

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Dave wrote:
> I'm trying to share a NFS file system from a server 'disk' to a client 't2'
>

>I respectfully request that this message is not archived by companies
>as unscrupulous as 'Experts Exchange' . In case you are unaware,

<snip>

It should be sufficient to add your Copyright notice!

I they then use what you wrote without your permission, you can sue them
and probably win a substantial monetary judgement!

Oscar del Rio

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Jun 25, 2009, 1:35:53 PM6/25/09

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Dave wrote:
> I'm trying to share a NFS file system from a server 'disk' to a client 't2'
>
> On the server
>
> root@disk:~# zfs set sharenfs='rw=128.208.128.194,root=128.208.128.194'

ISTR that the (legacy) NFS server checks for the hostname or FQDN and
not the IP address; it might be the same with zfs sharing (?). Try
using the hostname or FQDN, or the "network" @ syntax (see "man share_nfs")

rw=@128.208.128.194/32,root=@128.208.128.194/32

Dave

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Jun 25, 2009, 3:12:21 PM6/25/09

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Hi Cindy,

I already tried that, and it did not mount. I had in fact made the
permissions on /usr/local/tmp 777, as I thought anything else when you
mounted a file system would always be a limitation that you can't easily
control.

Dave

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Jun 25, 2009, 3:13:21 PM6/25/09

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Thank you, that worked. I'd already tried the host names, which are in
/etc/inet/hosts, so i don't know why it did not work. But your
suggestion above did work. Thank you.

Darren Dunham

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Jun 29, 2009, 6:34:09 PM6/29/09

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Dave <f...@coo.com> wrote:
> Thank you, that worked. I'd already tried the host names, which are in
> /etc/inet/hosts, so i don't know why it did not work. But your
> suggestion above did work. Thank you.

Are you using DNS? What matters is the reverse lookup. Mountd will do
a reverse lookup on the IP and try to match the result to the access
list. If the hostname lookup returns a "long" name, that will not match
a short name.

rw=foo will fail to match if the IP resolves to foo.company.com.

--
Darren