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Re: [PATCH 14/18] nfsd: pNFS block layout driver

To: "J. Bruce Fields" <bfields@xxxxxxxxxxxx>
Subject: Re: [PATCH 14/18] nfsd: pNFS block layout driver
From: Christoph Hellwig <hch@xxxxxx>
Date: Tue, 6 Jan 2015 18:39:57 +0100
Cc: Jeff Layton <jlayton@xxxxxxxxxxxxxxx>, linux-nfs@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20150106171658.GD12067@xxxxxxxxxxxx>
References: <1420561721-9150-1-git-send-email-hch@xxxxxx> <1420561721-9150-15-git-send-email-hch@xxxxxx> <20150106171658.GD12067@xxxxxxxxxxxx>
User-agent: Mutt/1.5.17 (2007-11-01)
On Tue, Jan 06, 2015 at 12:16:58PM -0500, J. Bruce Fields wrote:
> > +file system must sit on shared storage (typically iSCSI) that is accessible
> > +to the clients as well as the server.  The file system needs to either sit
> > +directly on the exported volume, or on a RAID 0 using the MD software RAID
> > +driver with the version 1 superblock format.  If the filesystem uses sits
> > +on a RAID 0 device the clients will automatically stripe their I/O over
> > +multiple LUNs.
> > +
> > +On the server pNFS block volume support is automatically if the file system
> s/automatically/automatically enabled/.
> So there's no server-side configuration required at all?

The only required configuration is the fencing helper script if you
want to be able to fence a non-responding client.  For simple test setups
everything will just work out of the box.

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