From mboxrd@z Thu Jan 1 00:00:00 1970 From: ross@lug.udel.edu (Ross Vandegrift) Subject: Re: [PATCH 000 of 5] md: Introduction Date: Fri, 20 Jan 2006 12:29:32 -0500 Message-ID: <20060120172932.GC27141@lug.udel.edu> References: <26A66BC731DAB741837AF6B2E29C1017D47EA0@xmb-hkg-413.apac.cisco.com> <17358.52476.290687.858954@cse.unsw.edu.au> <43D00FFA.1040401@cfl.rr.com> <17360.5011.975665.371008@cse.unsw.edu.au> <43D02033.4070008@cfl.rr.com> <17360.9233.215291.380922@cse.unsw.edu.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <17360.9233.215291.380922@cse.unsw.edu.au> Sender: linux-raid-owner@vger.kernel.org To: Neil Brown Cc: Phillip Susi , Jan Engelhardt , "Lincoln Dale (ltd)" , Michael Tokarev , linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org, "Steinar H. Gunderson" List-Id: linux-raid.ids On Fri, Jan 20, 2006 at 10:43:13AM +1100, Neil Brown wrote: > dm and md are just two different interface styles to various bits of > this. Neither is clearly better than the other, partly because > different people have different tastes. Here's why it's great to have both: they have different toolkits. I'm really familiar with md's toolkit. I can do most anything I need. But I'll bet that I've never gotten a pvmove to finish sucessfully because I am doing something wrong and I don't know it. Becuase we're talking about data integrity, the toolkit issue alone makes it worth keeping both code paths. md does 90% of what I need, so why should I spend the time to learn a new system that doesn't offer any advantages? [1] I'm intentionally neglecting the 4k stack issue -- Ross Vandegrift ross@lug.udel.edu "The good Christian should beware of mathematicians, and all those who make empty prophecies. The danger already exists that the mathematicians have made a covenant with the devil to darken the spirit and to confine man in the bonds of Hell." --St. Augustine, De Genesi ad Litteram, Book II, xviii, 37