From: "J. Bruce Fields" <bfields@fieldses.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Jeff Layton <jlayton@primarydata.com>,
linux-nfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
xfs@oss.sgi.com
Subject: Re: [PATCH 14/18] nfsd: pNFS block layout driver
Date: Tue, 6 Jan 2015 14:39:49 -0500 [thread overview]
Message-ID: <20150106193949.GD28003@fieldses.org> (raw)
In-Reply-To: <20150106173957.GA16200@lst.de>
On Tue, Jan 06, 2015 at 06:39:57PM +0100, Christoph Hellwig wrote:
> 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.
I think we want at a minimum some kind of server-side "off" switch.
If nothing else it'd be handy for troubleshooting. ("Server crashing?
Could you turn off pnfs blocks and try again?")
--b.
WARNING: multiple messages have this Message-ID (diff)
From: "J. Bruce Fields" <bfields@fieldses.org>
To: Christoph Hellwig <hch@lst.de>
Cc: linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org,
Jeff Layton <jlayton@primarydata.com>,
xfs@oss.sgi.com
Subject: Re: [PATCH 14/18] nfsd: pNFS block layout driver
Date: Tue, 6 Jan 2015 14:39:49 -0500 [thread overview]
Message-ID: <20150106193949.GD28003@fieldses.org> (raw)
In-Reply-To: <20150106173957.GA16200@lst.de>
On Tue, Jan 06, 2015 at 06:39:57PM +0100, Christoph Hellwig wrote:
> 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.
I think we want at a minimum some kind of server-side "off" switch.
If nothing else it'd be handy for troubleshooting. ("Server crashing?
Could you turn off pnfs blocks and try again?")
--b.
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next prev parent reply other threads:[~2015-01-06 19:39 UTC|newest]
Thread overview: 153+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-06 16:28 a simple and scalable pNFS block layout server Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 01/18] nfs: add LAYOUT_TYPE_MAX enum value Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 02/18] fs: add FL_LAYOUT lease type Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 18:46 ` Jeff Layton
2015-01-06 18:46 ` Jeff Layton
2015-01-07 10:30 ` Christoph Hellwig
2015-01-07 10:30 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 03/18] nfsd: factor out a helper to decode nfstime4 values Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-09 23:02 ` Tom Haynes
2015-01-09 23:02 ` Tom Haynes
2015-01-09 23:02 ` Tom Haynes
2015-01-11 11:42 ` Christoph Hellwig
2015-01-11 11:42 ` Christoph Hellwig
2015-01-11 23:53 ` Tom Haynes
2015-01-11 23:53 ` Tom Haynes
2015-01-11 23:53 ` Tom Haynes
2015-01-06 16:28 ` [PATCH 04/18] nfsd: move nfsd_fh_match to nfsfh.h Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 05/18] nfsd: add fh_fsid_match helper Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 06/18] nfsd: make lookup/alloc/unhash_stid available outside nfs4state.c Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 07/18] nfsd: make find/get/put file " Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 08/18] nfsd: make find_any_file " Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 09/18] nfsd: implement pNFS operations Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-09 0:48 ` Jeff Layton
2015-01-09 0:48 ` Jeff Layton
2015-01-09 0:48 ` Jeff Layton
2015-01-09 10:05 ` Christoph Hellwig
2015-01-09 10:05 ` Christoph Hellwig
2015-01-09 16:51 ` Jeff Layton
2015-01-09 16:51 ` Jeff Layton
2015-01-09 17:16 ` Christoph Hellwig
2015-01-09 17:16 ` Christoph Hellwig
2015-01-09 17:28 ` Jeff Layton
2015-01-09 17:28 ` Jeff Layton
2015-01-09 17:33 ` Jeff Layton
2015-01-09 17:33 ` Jeff Layton
2015-01-09 17:43 ` Trond Myklebust
2015-01-09 17:43 ` Trond Myklebust
2015-01-09 18:49 ` rfc5661 errata 3901, was: " Christoph Hellwig
2015-01-14 19:16 ` Tom Haynes
2015-01-15 16:26 ` Christoph Hellwig
2015-01-15 16:30 ` [nfsv4] " Trond Myklebust
2015-01-12 17:54 ` Tom Haynes
2015-01-12 17:54 ` Tom Haynes
2015-01-12 17:54 ` Tom Haynes
2015-01-06 16:28 ` [PATCH 10/18] nfsd: implement pNFS layout recalls Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 17:25 ` J. Bruce Fields
2015-01-06 17:25 ` J. Bruce Fields
2015-01-06 17:25 ` J. Bruce Fields
2015-01-06 17:42 ` Christoph Hellwig
2015-01-06 17:42 ` Christoph Hellwig
2015-01-06 17:59 ` Tom Haynes
2015-01-06 17:59 ` Tom Haynes
2015-01-06 17:59 ` Tom Haynes
2015-01-06 16:28 ` [PATCH 11/18] nfsd: update documentation for pNFS support Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 12/18] nfsd: add trace events Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 13/18] exportfs: add methods for block layout exports Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 14/18] nfsd: pNFS block layout driver Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 17:16 ` J. Bruce Fields
2015-01-06 17:16 ` J. Bruce Fields
2015-01-06 17:39 ` Christoph Hellwig
2015-01-06 17:39 ` Christoph Hellwig
2015-01-06 19:39 ` J. Bruce Fields [this message]
2015-01-06 19:39 ` J. Bruce Fields
2015-01-06 19:42 ` Jeff Layton
2015-01-06 19:42 ` Jeff Layton
2015-01-06 19:42 ` Jeff Layton
2015-01-07 10:28 ` Christoph Hellwig
2015-01-07 10:28 ` Christoph Hellwig
2015-01-08 20:41 ` Jeff Layton
2015-01-08 20:41 ` Jeff Layton
2015-01-08 20:54 ` J. Bruce Fields
2015-01-08 20:54 ` J. Bruce Fields
2015-01-12 4:56 ` Tom Haynes
2015-01-12 4:56 ` Tom Haynes
2015-01-12 4:56 ` Tom Haynes
2015-01-12 12:43 ` Christoph Hellwig
2015-01-12 12:43 ` Christoph Hellwig
2015-01-12 6:14 ` Tom Haynes
2015-01-12 6:14 ` Tom Haynes
2015-01-12 12:46 ` Christoph Hellwig
2015-01-12 12:46 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 15/18] xfs: pass a 64-bit count argument to xfs_iomap_write_unwritten Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 16/18] xfs: do not allocate blocks when converting unwritten extents Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 23:21 ` Dave Chinner
2015-01-06 23:21 ` Dave Chinner
2015-01-06 16:28 ` [PATCH 17/18] xfs: implement pnfs export operations Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-07 0:24 ` Dave Chinner
2015-01-07 0:24 ` Dave Chinner
2015-01-07 10:40 ` Christoph Hellwig
2015-01-07 10:40 ` Christoph Hellwig
2015-01-07 10:40 ` Christoph Hellwig
2015-01-07 21:11 ` Dave Chinner
2015-01-07 21:11 ` Dave Chinner
2015-01-07 21:11 ` Dave Chinner
2015-01-08 12:43 ` Christoph Hellwig
2015-01-08 12:43 ` Christoph Hellwig
2015-01-08 21:04 ` Dave Chinner
2015-01-08 21:04 ` Dave Chinner
2015-01-09 11:41 ` Christoph Hellwig
2015-01-09 11:41 ` Christoph Hellwig
2015-01-12 3:04 ` Dave Chinner
2015-01-12 3:04 ` Dave Chinner
2015-01-12 3:04 ` Dave Chinner
2015-01-14 10:08 ` Christoph Hellwig
2015-01-14 10:08 ` Christoph Hellwig
2015-01-14 10:08 ` Christoph Hellwig
2015-01-06 16:28 ` [PATCH 18/18] xfs: recall pNFS layouts on conflicting access Christoph Hellwig
2015-01-06 16:28 ` Christoph Hellwig
2015-01-06 23:18 ` Dave Chinner
2015-01-06 23:18 ` Dave Chinner
2015-01-06 23:18 ` Dave Chinner
2015-01-07 10:31 ` Christoph Hellwig
2015-01-07 10:31 ` Christoph Hellwig
2015-01-06 17:32 ` a simple and scalable pNFS block layout server J. Bruce Fields
2015-01-06 17:32 ` J. Bruce Fields
2015-01-06 17:56 ` Christoph Hellwig
2015-01-06 17:56 ` Christoph Hellwig
2015-01-06 18:37 ` Jeff Layton
2015-01-06 18:37 ` Jeff Layton
2015-01-06 18:37 ` Jeff Layton
2015-01-06 18:39 ` Weston Andros Adamson
2015-01-06 18:39 ` Weston Andros Adamson
2015-01-06 18:39 ` Weston Andros Adamson
2015-01-06 19:17 ` J. Bruce Fields
2015-01-06 19:17 ` J. Bruce Fields
2015-01-06 19:17 ` J. Bruce Fields
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