Re: nfs-ganesha/pnfs read/write path on EC volume

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On 02/10/2016 01:15 PM, Serkan Çoban wrote:
Hi Jiffin,

Any update about the write path?
I saw him send some mails related to this, yesterday and day before. You will hear from him soon.

Pranith

Serkan

On Sun, Jan 31, 2016 at 5:00 PM, Jiffin Tony Thottan
<jthottan@xxxxxxxxxx> wrote:

On 31/01/16 16:19, Serkan Çoban wrote:
Hi,
I am testing nfs-ganesha with pNFS on EC volume and I want to ask some
questions.
Assume we have two clients: c1,c2
and six servers with one 4+2 EC volume constructed as below:

gluster volume create vol1 disperse 6 redundancy 2 server{1..6}:/brick/b1
\

       server{1..6}:/brick/b2 \

       server{1..6}:/brick/b3 \

       server{1..6}:/brick/b4 \

       server{1..6}:/brick/b5 \

       server{1..6}:/brick/b6
vol1 is mounted on both clients as server1:/vol1

Here is first question: When I write file1 from client1 and file2 from
client2; which servers get the files? In my opinion server1 gets file1
and server2 gets file2 and do EC calculations and distribute chunks to
other servers. Am I right?

Can anyone explain detailed read/write path with pNFS and EC volumes?

I never tried pNFS with EC volume, will try the same by my own and reply to
your question as soon as possible.
--
Jiffin

Thanks,
Serkan
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