UNCLASSIFIED - RE: [Linux-cluster] iSCSI GFS

[gordan at bobich.net]

On Thu, 31 Jan 2008, HAWKER, Dan 2 (external) wrote:

>> Is there a way of RE-exporting an NFS share through the
>> aggregator or am I
>> overlooking something?
>
> You can't NFS a NFS share (if I understand what you are saying). Don't
> know the intricacies of why (I'd presume it is to do with keeping track
> of locks down/across the hierarchy of multiple NFS servers), but it
> doesn't work (in my experience anyway).

I must admit I never tried it, but I'm sure I read some documentation that 
says it can be done. You have to mount first, then export the FS. Similar 
applies to exporting mount points for other FS-es (e.g. CDs).

As for locking, that doesn't work on NFS anyway.

> You'll need to export the share (actually the data in the share) you are
> presently NFSing to the aggregator using something else (iSCSI for
> instance) and then NFS that from the aggregator.

I think he's trying to do it the other way around. Put a volume file on an 
NFS share, then export that volume file via iSCSI.

Gordan