From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bill Davidsen Subject: Re: New features? Date: Tue, 31 Oct 2006 14:19:04 -0500 Message-ID: <4547A1A8.7000106@tmr.com> References: <1162293818.32109.113.camel@kenny> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1162293818.32109.113.camel@kenny> Sender: linux-raid-owner@vger.kernel.org To: John Rowe Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids John Rowe wrote: >All this discussion has led me to wonder if we users of linux RAID have >a clear consensus of what our priorities are, ie what are the things we >really want to see soon as opposed to the many things that would be nice >but not worth delaying the important things for. FWIW, here are mine, in >order although the first two are roughly equal priority. > >1 "Warm swap" - replacing drives without taking down the array but maybe >having to type in a few commands. Presumably a sata or sata/raid >interface issue. (True hot swap is nice but not worth delaying warm- >swap.) > > That seems to work now. It does assume that you have hardware hot swap capability. >2 Adding new disks to arrays. Allows incremental upgrades and to take >advantage of the hard disk equivalent of Moore's law. > > Also seems to work. >3. RAID level conversion (1 to 5, 5 to 6, with single-disk to RAID 1 a >lower priority). > > Single to RAID-N is possible, but involves a good bit of magic with leaving room for superblocks, etc. >4. Uneven disk sizes, eg adding a 400GB disk to a 2x200GB mirror to >create a 400GB mirror. Together with 2 and 3, allows me to continuously >expand a disk array. > > ??? -- bill davidsen CTO TMR Associates, Inc Doing interesting things with small computers since 1979