From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roman Mamedov Subject: Re: Raid 5 to 6 migration Date: Sat, 2 Feb 2013 00:16:25 +0600 Message-ID: <20130202001625.2b7d6514@natsu> References: <510C0075.9010908@turmel.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/sr_4MwJtqAcnUtXaRq9asKT"; protocol="application/pgp-signature" Return-path: In-Reply-To: <510C0075.9010908@turmel.org> Sender: linux-raid-owner@vger.kernel.org To: Phil Turmel Cc: Dominique , linux-raid mailing list List-Id: linux-raid.ids --Sig_/sr_4MwJtqAcnUtXaRq9asKT Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Fri, 01 Feb 2013 12:50:45 -0500 Phil Turmel wrote: > On 02/01/2013 12:17 PM, Dominique wrote: > > Hi list, > >=20 > > I was wondering what would be the best way to convert a 6 hdd raid 5 to > > raid 6. Ideally without having to reformat everything and lose all the > > data in the process. I have backups of the data but I don't look forward > > reinstalling everything on that server. ... > 3) Convert array to raid6 w/ "mdadm --grow --level=3Draid6" --layout=3Dpreserve will make it an order of magnitude faster. Read "man md= adm" for more details. (And "man md" to learn about things in general.) That's all while still assuming you *can* or want to add a 7th drive. If not, things become more complex. --=20 With respect, Roman --Sig_/sr_4MwJtqAcnUtXaRq9asKT Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAlEMBnkACgkQTLKSvz+PZwjblgCeKMwA2Bq8PErGDhUgCpnvWUnb 3gUAn3v66AemSPCc6FCfI0Cl2g80bLK+ =WnXs -----END PGP SIGNATURE----- --Sig_/sr_4MwJtqAcnUtXaRq9asKT--