From: Christoph Hellwig <hch@infradead.org>
To: Dan Greenfield <dgrnfld@gmail.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: XFS NVMe RDMA?
Date: Wed, 20 Oct 2021 09:35:52 -0700 [thread overview]
Message-ID: <YXBFaOqjMRN7ucFb@infradead.org> (raw)
In-Reply-To: <YXBE5y2cJtAaMfzs@infradead.org>
On Wed, Oct 20, 2021 at 09:33:43AM -0700, Christoph Hellwig wrote:
> On Wed, Oct 20, 2021 at 12:51:05PM +0100, Dan Greenfield wrote:
> > Do you have any ideas how they could have been able to utilise RDMA so that node A can directly access data chunks stored on XFS on node B? Is the only approach to mmap the chunk on node B and then RDMA it to/from node A?
>
> I'm not going to watch a video, but with the pNFS code other nodes can
> access data on an XFS node directly using any SCSI transport.
> For RMDA that would be SRP or iSCSI/iSER.
>
> Note that I also have an unfinished draft to support NVMe, which has
> an RDMA transports as well and someone else could trivially reimplement
> that as well.
Oh, and just FYI here are my slides on the pNFS support:
https://events.static.linuxfound.org/sites/events/files/slides/pnfs.pdf
next prev parent reply other threads:[~2021-10-20 16:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-20 11:51 XFS NVMe RDMA? Dan Greenfield
2021-10-20 16:33 ` Christoph Hellwig
2021-10-20 16:35 ` Christoph Hellwig [this message]
2021-10-21 9:58 ` Dan Greenfield
2021-10-27 8:23 ` Dan Greenfield
2021-11-12 6:40 ` Christoph Hellwig
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