linux-kernel - Re: [PATCH 0/6] Support DAX for device-mapper dm-linear devices

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Message-ID: <x49fusf282h.fsf@segfault.boston.devel.redhat.com>
Date:	Tue, 14 Jun 2016 09:50:30 -0400
From:	Jeff Moyer <jmoyer@...hat.com>
To:	"Kani\, Toshimitsu" <toshi.kani@....com>
Cc:	"dan.j.williams\@intel.com" <dan.j.williams@...el.com>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
	"agk\@redhat.com" <agk@...hat.com>,
	"linux-raid\@vger.kernel.org" <linux-raid@...r.kernel.org>,
	"snitzer\@redhat.com" <snitzer@...hat.com>,
	"viro\@zeniv.linux.org.uk" <viro@...iv.linux.org.uk>,
	"axboe\@kernel.dk" <axboe@...nel.dk>,
	"linux-nvdimm\@lists.01.org" <linux-nvdimm@...1.01.org>,
	"ross.zwisler\@linux.intel.com" <ross.zwisler@...ux.intel.com>,
	"dm-devel\@redhat.com" <dm-devel@...hat.com>
Subject: Re: [PATCH 0/6] Support DAX for device-mapper dm-linear devices

"Kani, Toshimitsu" <toshi.kani@....com> writes:

>> I had dm-linear and md-raid0 support on my list of things to look at,
>> did you have raid0 in your plans?
>
> Yes, I hope to extend further and raid0 is a good candidate.   

dm-flakey would allow more xfstests test cases to run.  I'd say that's
more important than linear or raid0.  ;-)

Also, the next step in this work is to then decide how to determine on
what numa node an LBA resides.  We had discussed this at a prior
plumbers conference, and I think the consensus was to use xattrs.
Toshi, do you also plan to do that work?

Cheers,
Jeff