[Gluster-devel] Re-exporting NFS to vmware

[Gordan Bobic]

沈允中 wrote:
> Hi All：
> 
> I wanted to use GlusterFS as a share storage to connect with vmware.
> 
> But the nfs protocol had a poor performance when the scalability got 
> larger.(I have 20 servers as a GlusterFS)
> 
> So I figured out a way when I saw the wiki of Ceph
> 
> http://ceph.newdream.net/wiki/Re-exporting_NFS
> 
>  
> 
> I think that I can add a middle-converter between vmware and GlusterFS.
> 
> It can connect with vmware by nfs and mount GlusterFS by glusterfs.
> 
> Here is the architecture I thought.......
> 
> And then I had a problem. The middle-tier is OK to connect with 
> GlusterFS by glusterfs protocol.
> 
> But the errors happened when vmware connects with middle-tier by nfs 
> protocol.
> 
> The vmware cannot mount middle-tier by nfs at the first time.
> 
> Even if vmware can mount the middle-tier by nfs, it cannot see the data 
> in the GlusterFS.
> 
> It can only see the data(directory) in the middle-tier
> 
>  
> 
> Does anyone have the same problem as I ?
> 
> How do you solve this thorny problem?

Are you saying you are mounting GlusterFS on an interim node, and then
re-exporting that via NFS? What are you using for the NFS export? Last I
checked kernel nfsd didn't work with fuse based file systems, so you'd
have to use something like unfsd (user-space) instead. You may, however,
find that if you do that, the extra performance hit from unfsd will undo
most of the speed-up you are hoping to achieve.

Gordan