To start testing Linux pNFS server?

To start testing Linux pNFS server?

[Zack Perry]

Hi,

This is my first message to this list. I have been using Fedora 16 and NFSv4 for sometime, and would like to give NFSv4.1 with the pNFS extension a try.  

I understand that according to  http://wiki.linux-nfs.org/wiki/index.php/NFSv41_Introduction NFSv4.1 is really developer-only at this point, but it should "mostly work" - that's good enough for me. 

The wiki http://wiki.linux-nfs.org/wiki/index.php/Configuring_pNFS/spnfsd, states that "As of early 2011, it is mostly unmaintained, and we no longer recommend its use". It then points to http://wiki.linux-nfs.org/wiki/index.php/PNFS_server_projects. But, as far as spNFS is concerned, the two wiki pages form a circular reference. The other options for file layout are no go either.

Then, there is this: http://wiki.linux-nfs.org/wiki/index.php/PNFS_Setup_Instructions
which seems to indicate that with a pNFS enabled kernel, a determined user can start testing NFSv4.1 + pNFS. Steve Dickson even has a repository here: http://steved.fedorapeople.org/repos/pnfs/devel/x86_64/rpms/

Can anyone kind enough to give a short summary as to how to proceed for testing NFSv4.1 + pNFS using Fedora 16 nodes as servers?

As of now, all my Fedora 16 nodes have the following from a regular kickstart install:
[root@fedora0 ~]# uname -a
Linux fedora0 3.3.2-6.fc16.x86_64 #1 SMP Sat Apr 21 12:43:20 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
[root@fedora0 ~]# rpm -q nfs-utils
nfs-utils-1.2.5-5.fc16.x86_64
[root@fedora0 ~]# cat /proc/fs/nfsd/versions
+2 +3 +4 -4.1

Thanks,

Zack

Re: To start testing Linux pNFS server?

[J. Bruce Fields]

On Sat, Apr 28, 2012 at 11:00:56PM -0700, Zack Perry wrote:
> Hi,
> 
> This is my first message to this list. I have been using Fedora 16 and NFSv4 for sometime, and would like to give NFSv4.1 with the pNFS extension a try.  
> 
> I understand that according to  http://wiki.linux-nfs.org/wiki/index.php/NFSv41_Introduction NFSv4.1 is really developer-only at this point, but it should "mostly work" - that's good enough for me. 
> 
> The wiki http://wiki.linux-nfs.org/wiki/index.php/Configuring_pNFS/spnfsd, states that "As of early 2011, it is mostly unmaintained, and we no longer recommend its use". It then points to http://wiki.linux-nfs.org/wiki/index.php/PNFS_server_projects. But, as far as spNFS is concerned, the two wiki pages form a circular reference. The other options for file layout are no go either.
> 
> Then, there is this: http://wiki.linux-nfs.org/wiki/index.php/PNFS_Setup_Instructions
> which seems to indicate that with a pNFS enabled kernel, a determined user can start testing NFSv4.1 + pNFS. Steve Dickson even has a repository here: http://steved.fedorapeople.org/repos/pnfs/devel/x86_64/rpms/
> 
> Can anyone kind enough to give a short summary as to how to proceed for testing NFSv4.1 + pNFS using Fedora 16 nodes as servers?

My impression is that the most likely to work possibilities are either
the exofs-based or gfs2-based servers.  Boaz Harosh might be able to
help with the latter.  I don't know if the wiki instructions are up to
date.  You probably need to build a kernel from Benny's git tree in
either case.

--b.

> 
> As of now, all my Fedora 16 nodes have the following from a regular kickstart install:
> [root@fedora0 ~]# uname -a
> Linux fedora0 3.3.2-6.fc16.x86_64 #1 SMP Sat Apr 21 12:43:20 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
> [root@fedora0 ~]# rpm -q nfs-utils
> nfs-utils-1.2.5-5.fc16.x86_64
> [root@fedora0 ~]# cat /proc/fs/nfsd/versions
> +2 +3 +4 -4.1
> 
> Thanks,
> 
> Zack
> 
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Re: To start testing Linux pNFS server?

[Zack Perry]

Hi Bruce,

Thanks for your suggestion.

Zack

> 
> My impression is that the most likely to work possibilities
> are either the exofs-based or gfs2-based servers.  Boaz Harosh
> might be able to help with the latter.  I don't know if the wiki
> instructions are up to date.  You probably need to build a kernel
> from Benny's git tree in either case.
> 
> --b.

Re: To start testing Linux pNFS server?

[Benny Halevy]

hi, sorry for the late reply, and thanks Bruce!
The linux-pnfs tree is here:
git://linux-nfs.org/~bhalevy/linux-pnfs.git

What layout type are you interested to test?
Currently, the block layout back-end is not in an operational state and unfortunately
it's not actively maintained.

For the files layout, as Bruce mentioned, you can use the gfs2-based server that does
parallel reads, but writes only via the MDS, and the pnfsd-lexp (local export) testing
back end that exports a local file system over pnfs, playing both the MDS and a single DS
on the server.

The objects layout can be tested using the pnfsd-exofs back end, which is the most complete
implementation right now.  Again, as Bruce correctly pointed out :)
Boaz Harrosh <bharrosh@panasas.com> would be able to help you with that.

Benny

On 2012-04-30 23:33, Zack Perry wrote:
> Hi Bruce,
> 
> Thanks for your suggestion.
> 
> Zack
> 
>>
>> My impression is that the most likely to work possibilities
>> are either the exofs-based or gfs2-based servers.  Boaz Harosh
>> might be able to help with the latter.  I don't know if the wiki
>> instructions are up to date.  You probably need to build a kernel
>> from Benny's git tree in either case.
>>
>> --b.
> 
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