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Re: [Xen-users] iscsi vs nfs for xen VMs

To: Marcin Kuk <marcin.kuk@xxxxxxxxx>
Subject: Re: [Xen-users] iscsi vs nfs for xen VMs
From: Adi Kriegisch <adi@xxxxxxxxxxxxxxx>
Date: Thu, 27 Jan 2011 09:03:31 +0100
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Hi!

On Wed, Jan 26, 2011 at 11:59:40PM +0100, Marcin Kuk wrote:
[SNIP]
> Yes. NFS can handle only 16 first groups. If user belong to more than
> 16 users - you are close to have troubles.
Actually this is a server issue. Patches to raise this limit to NGROUPS_MAX
(65536 in Linux) exist for a long time. And they work well and are still
supported:
http://www.frankvm.com/nfs-ngroups/

Permission checking is a server task. So, as long as you're using Linux NFS
servers only you may raise that limit to 64K groups, no matter what client
you are using.

-- Adi

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