From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bill Davidsen Subject: Re: Is it possible to grow a RAID-10 array with mdadm? Date: Wed, 01 Aug 2007 08:32:46 -0400 Message-ID: <46B07D6E.3060901@tmr.com> References: <46ABAC5A.2000103@ziu.info> <46ABB830.1000204@ziu.info> <0dc901c7d20b$be23d100$332317ac@Cortex> <18093.42484.733479.935581@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <18093.42484.733479.935581@notabene.brown> Sender: linux-raid-owner@vger.kernel.org To: Neil Brown Cc: Tomas France , linux-raid@vger.kernel.org List-Id: linux-raid.ids Neil Brown wrote: > On Sunday July 29, tomfra@centrum.cz wrote: > >> Hi everyone, >> >> Is it possible to add drives to an active RAID-10 array, using the "grow" >> switch with mdadm, just like it is possible with a RAID-5 array? Or perhaps >> there is another way? >> >> I have been looking for this information for a long time but have been >> unable to find it anywhere. The man page for mdadm does not mention RAID-10 >> at all so that didn't help either. Has anyone tried it? >> > > The man page for mdadm does not mention it because it is not > supported. > > There are several reshape options that I would like to implement > including > - raid5 -> raid6 > - shrinking raid4/5/6 > - raid0 -> raid5 > - changing chunksize/layout of raid4/5/6 > - raid10 growing and layout change > While changing chunk size is probably the least generally useful, I sure would like to have it ;-) -- bill davidsen CTO TMR Associates, Inc Doing interesting things with small computers since 1979