From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matias Bjorling Subject: Re: [PATCH RFC v1 00/01] dm-lightnvm introduction Date: Fri, 21 Mar 2014 09:42:54 -0700 Message-ID: <532C6C0E.3040608@bjorling.me> References: <1395383538-18019-1-git-send-email-m@bjorling.me> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: snitzer@redhat.com, agk@redhat.com, dm-devel@redhat.com, NeilBrown , linux-fsdevel , LKML To: Richard Weinberger Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On 03/21/2014 08:32 AM, Richard Weinberger wrote: > On Fri, Mar 21, 2014 at 7:32 AM, Matias Bj=F8rling wr= ote: >=20 > This sounds very interesting! >=20 > Is there also a way to expose the flash directly as MTD device? > I'm thinking of UBI. Maybe both projects can benefit from each others= =2E >=20 Hi Richard, Yes, mostly. It's different from MTD, in that all flash is exposed through a linear address space, from which the FTL is layered on top. This allows the device to still do some work, such as ECC, RAID, etc. i= f it choose to, but also allows the host to do it. I think UBI could be a good choice for maintaining each of the flash "partitions" as there's a lot of small subtle details that have to be taken care of. - Matias