[Gluster-users] NFS export under Centos 5.3

[Justice London]

Well, I ended up finding that I had to mount with 'glusterfs' rather than
using a mount command to get this to work properly. Perhaps it was an error
on my part there, but I got it working in general.

 

The issue now is that when disabling direct-io it brings gluster from
at-disk speeds to a crawling 18-24M/s. This means when I want to export
through NFS it further slows things down, somewhere in the range of 4-7M/s.
Given that this is over gigabit Ethernet I should expect ~100M/s in good
conditions and when simply reading/writing plain files over NFS this is the
case. I did try unfs3 and turned back on direct-io and there are speed
increases, but even when using plain filesystem, unfs seems to only be able
to run about 24M/s tops. I'm not sure if this is an issue with the fuse
lib/module, but certainly if I want to do any real work over NFS this isn't
going to be a workable solution (either way, unfs or plain nfs with
disable-direct-io).

 

Any further suggestions to get this working (different fuse library, etc.)
or at this point is this just how things will be with gluster+nfs?

 

Justice London
E-mail:  jlondon at lawinfo.com



  _____  

From: Raghavendra G [mailto:raghavendra.hg at gmail.com] 
Sent: Tuesday, April 14, 2009 6:15 AM
To: Justice London
Cc: gluster-users at gluster.org
Subject: Re: [Gluster-users] NFS export under Centos 5.3

 

Hi,

glusterfs has to be mounted with direct-io disabled for NFS re-export to
work properly. You can disable direct-io using --disable-direct-io option to
glusterfs.

regards,

On Mon, Apr 13, 2009 at 11:06 PM, Justice London <jlondon at lawinfo.com>
wrote:

Has anyone successfully gotten NFS exports of a gluster filesystem to work
properly? When the export is mounted, file-names and folders can be properly
created, but actually writing data to any of these files or folders results
in a permissions/write error. I can send out further details on configs,
etc. but perhaps someone has simply encountered this before and worked
around it.

 

Justice London
E-mail:  jlondon at lawinfo.com

 


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Raghavendra G

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