ZFS and 'traditional' nfs-export

[Arno J. Klaassen-2]

Hello,

I googled a bit on this question but could not find
a clear answer :

is there any risk/inconvenience/advantage in exporting
a ZFS-fs by just putting it in /etc/exports the old
way and leaving the 'sharenfs' option on the filesystem off?

I'd like to replace a UFS-based server serving mostly
linux-clients which work well now with a ZFS-fs, and somehow
am a bit waterfearing changing the nfsèoptions which worked
great till now.

Thank you in advance,

regards, Arno
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[Larry Rosenman]

ZFS makes its own version of the exports file.

Just do it that way, and be safe.

You can pass the full set of NFS options in the sharenfs parameter....



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-----Original Message-----
From: owner-freebsd-net@... [mailto:owner-freebsd-net@...]
On Behalf Of Arno J. Klaassen
Sent: Monday, October 26, 2009 6:46 PM
To: freebsd-fs@...
Cc: freebsd-net@...
Subject: ZFS and 'traditional' nfs-export


Hello,

I googled a bit on this question but could not find
a clear answer :

is there any risk/inconvenience/advantage in exporting
a ZFS-fs by just putting it in /etc/exports the old
way and leaving the 'sharenfs' option on the filesystem off?

I'd like to replace a UFS-based server serving mostly
linux-clients which work well now with a ZFS-fs, and somehow
am a bit waterfearing changing the nfsèoptions which worked
great till now.

Thank you in advance,

regards, Arno
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[Arno J. Klaassen-2]

hello,

"Larry Rosenman" <ler@...> writes:

> ZFS makes its own version of the exports file.
>
> Just do it that way, and be safe.
>
> You can pass the full set of NFS options in the sharenfs parameter....

ah ok, I see. Thanks for answering.

I got fooled by the man zfs(1M) example :

 zfs set sharenfs='rw=@.../16,root=neo' tank/home

This syntax does not seem to work for me (8.0RC2).
Maybe an extra line could be added that one can just set
the sharenfs property to exactly the same character string
as in /etc/exports.

Once again, merci.

Arno
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[Kris Kennaway-3]

Arno J. Klaassen wrote:

> hello,
>
> "Larry Rosenman" <ler@...> writes:
>
>> ZFS makes its own version of the exports file.
>>
>> Just do it that way, and be safe.
>>
>> You can pass the full set of NFS options in the sharenfs parameter....
>
> ah ok, I see. Thanks for answering.
>
> I got fooled by the man zfs(1M) example :
>
>  zfs set sharenfs='rw=@.../16,root=neo' tank/home
>
> This syntax does not seem to work for me (8.0RC2).
> Maybe an extra line could be added that one can just set
> the sharenfs property to exactly the same character string
> as in /etc/exports.

Yeah that is the solaris notation -- various things in the manpages have
not yet been customized for FreeBSD, which can be a bit confusing.

The only limitation I've found in using sharenfs is that you can't
specify multiple exports for the same filesystem, e.g. exporting to
different hosts/networks with different options.  The solaris notation
above allows you to express this.

Kris

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[Pawel Jakub Dawidek]

On Tue, Oct 27, 2009 at 12:46:00AM +0100, Arno J. Klaassen wrote:

>
> Hello,
>
> I googled a bit on this question but could not find
> a clear answer :
>
> is there any risk/inconvenience/advantage in exporting
> a ZFS-fs by just putting it in /etc/exports the old
> way and leaving the 'sharenfs' option on the filesystem off?
>
> I'd like to replace a UFS-based server serving mostly
> linux-clients which work well now with a ZFS-fs, and somehow
> am a bit waterfearing changing the nfsèoptions which worked
> great till now.

You can safely use /etc/exports without touching sharenfs property.

--
Pawel Jakub Dawidek                       http://www.wheel.pl
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