CA-176801: Work around rpcinfo intricacies to determine nfs versions

[siddharthv]

Signed-off-by: Siddharth Vinothkumar siddharth.vinothkumar@citrix.com

[sriccio]

While changes are being made to nfs.py, would it be possible to allow mount options to be specified for NFS storage repositories. Like for example, not everybody wants to use soft mount. This can avoid virtual machines switching to read only when a disconnection between the hosts and the storage occurs.

Changing these options need nfs.py to be manually edited and it's being overwritten when doing updates.

XenCenter allowed or still allows, I've not really checked recently, to specify mount options, when creating a NFS repository. But nothing in nfs.py is caring about these options :/

Your thoughts about the "issue" ?

ps: there is a thread about this on citrix forum since nov. 2013:

http://discussions.citrix.com/topic/344713-linux-vm-storage-going-read-only-on-nfs-shares-and-a-proposed-fix-in-xenserver/

[siddharthv]

@sriccio thanks a lot for your comment.
I can see what you're faced with but it would be best if you could raise a Feature Request at http://bugs.xenserver.org/ to get such a change onto the product.
This change is not trivial in my opinion.