From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Evans Subject: Re: Problem converting from raid5 to raid6 Date: Sun, 21 Mar 2010 03:28:48 -0700 Message-ID: <4877c76c1003210328s313155c5u7c6e829d33f38abe@mail.gmail.com> References: <20100321030107.GA18586@csy.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <20100321030107.GA18586@csy.ca> Sender: linux-raid-owner@vger.kernel.org To: Shane W Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Sat, Mar 20, 2010 at 8:01 PM, Shane W wrote: > Hello all, > > I am trying to convert a 5 disk raid5 array to a 6 disk > raid6 but am having no luck. I first added the 6th disk as > a spare then > mdadm --grow /dev/md3 --level 6 > mdadm level of /dev/md3 changed to raid6 > mdadm: /dev/md3: Something wrong - reshape aborted > mdadm: aborting level change > > dmesg doesn't show an error and neither does mdadm beyond > "something wrong". Is this supported? > > mdadm 3.1.1 Linux 2.6.32.8 x86_64. > > Thanks, > Shane > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid"= in > the body of a message to majordomo@vger.kernel.org > More majordomo info at =A0http://vger.kernel.org/majordomo-info.html > It should be supported, but you probably need to specify a temporary file ON ANOTHER DEVICE where the 'critical section' can be backed up to and restored in case the reshape fails. I forget what the exact syntax is, but man mdadm will inform you. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html