[Gluster-devel] Multiple NFS Servers (Gluster NFS in 3.x, unfsd, knfsd, etc.)

Shehjar Tikoo shehjart at gluster.com
Sat Jan 9 11:17:06 UTC 2010

Martin Fick wrote:
> --- On Thu, 1/7/10, Gordan Bobic <gordan at bobich.net> wrote:
>> Shehjar Tikoo wrote:
>>> Gordan Bobic wrote:
>>>> Martin Fick wrote:
>>>>> --- On Wed, 1/6/10, Gordan Bobic <gordan at bobich.net>
>> wrote:
>>>> I don't think it would be wasted if it
>>>> includes NLM since unfsd does not do locking!
>>> It does not do decent security either. One of our
>>> goals is to implement kerberos5 based authentication. We also
>>> want to support NFS over RDMA and NFSACLs. For extending to
>>> these, unfsd code is highly limiting.
>> So why exactly use NFS instead of GlusterFS with
>> server-side brick assembly? What is the advantage? I cannot
>> see one either in terms of performance or functionality.
>> This is what I would be using if I could get that setup to
>> work without bugginess (e.g. bug 186) and crashing (see
>> other emails on this thread, will try to re-create and
>> provide backtraces).
> The last time I evaluated GlusterFS, it did not support 
> graceful server disconnection/rebooting (i.e. clients with 
> open files will see errors instead of blocking).  While it 
> would be awesome of this were simply "fixed" at the 
> GlusterFS level, if the NFS xlator provides this 
> functionality it would be a big win.  This feature is the
> single feature keeping me from using GlusterFS to this 
> day.  I look forward to either of theses solutions so that
> I could use GlusterFS,

Yes. Gluster NFS server reboots work fine with the NFS xlator.
The other aspect is the disconnections from and reboots of GlusterFS
backends/replicas. That is handled by replicate and distribute
self-heal but I havent yet come around to the cluster availability
tests with NFS yet. Soon..


> -Martin
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