From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay3.corp.sgi.com [198.149.34.15]) by oss.sgi.com (Postfix) with ESMTP id 1FB3D7CA0 for ; Wed, 8 Jun 2016 02:11:37 -0500 (CDT) Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by relay3.corp.sgi.com (Postfix) with ESMTP id 8B115AC001 for ; Wed, 8 Jun 2016 00:11:33 -0700 (PDT) Received: from newverein.lst.de (verein.lst.de [213.95.11.211]) by cuda.sgi.com with ESMTP id r6WKqZjgar15zAPH (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Wed, 08 Jun 2016 00:11:31 -0700 (PDT) Date: Wed, 8 Jun 2016 09:11:30 +0200 From: Christoph Hellwig Subject: Re: [RFC] allow enabling reflinks at runtime Message-ID: <20160608071130.GB24663@lst.de> References: <1464877150-20457-1-git-send-email-hch@lst.de> <20160602225415.GP12670@dastard> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20160602225415.GP12670@dastard> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: Dave Chinner Cc: xfs@oss.sgi.com, darrick.wong@oracle.com On Fri, Jun 03, 2016 at 08:54:15AM +1000, Dave Chinner wrote: > On Thu, Jun 02, 2016 at 04:19:07PM +0200, Christoph Hellwig wrote: > > I've had some vocal user requests to allow enabling reflinks at run time, > > which happens to be a mostly trivial feature. The only caveat is that we > > need a large enough log size to support the reflink requirements, but for > > typical large file systems that's not an issue. > > Hmmm - how does this interact with all the rmap code? I was not > planning on enabling reflink without rmap and vice versa simply > because it makes the validation and testing matrix vastly more > complex. Uh. So far I've only been testing pure reflink code, mostly because rmap really doesn't buy much for the use case I'm working on. Enabling rmap post-mkfs is defintively a different ballpark, and probably not worth it even if it would be doable. _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs