From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roy Sigurd Karlsbakk Subject: Re: Expanding array with multiple devices Date: Sat, 2 Mar 2013 18:15:56 +0100 (CET) Message-ID: <25032068.12.1362244556592.JavaMail.root@zimbra> References: <513232B4.7030404@turmel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <513232B4.7030404@turmel.org> Sender: linux-raid-owner@vger.kernel.org To: Phil Turmel Cc: Oliver Schinagl , linux-raid@vger.kernel.org List-Id: linux-raid.ids > On 03/02/2013 09:07 AM, Roy Sigurd Karlsbakk wrote: > >> While expanding an existing raid is as simple as mdadm --add, > >> followed > >> by an mdadm --grow, How would you go about this when expanding it > >> with > >> multiple devices. > > > > Given a RAID-5 on /dev/sd[bcde], I'd do > > > > # mdadm --add /dev/md0 /dev/sd[fghi] > > # mdadm --grow --level=3D6 --raid-devices=3D8 > > > > No need to create a new RAID and then move the data. >=20 > You missed the bit where he states he needs to use mkfs to switch > filesystem features. Oh, sorry. Then why not start off with an identical RAID-5, move the da= ta, and then expand as above? No dangling "missing" drives, just plain = and simple. Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 98013356 roy@karlsbakk.net http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt.= Det er et element=C3=A6rt imperativ for alle pedagoger =C3=A5 unng=C3=A5= eksessiv anvendelse av idiomer med xenotyp etymologi. I de fleste tilf= eller eksisterer adekvate og relevante synonymer p=C3=A5 norsk. -- 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