From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id o88NThJb071700 for ; Wed, 8 Sep 2010 18:29:43 -0500 Received: from mailsrv14.zmi.at (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 4A61014EE658 for ; Wed, 8 Sep 2010 16:41:40 -0700 (PDT) Received: from mailsrv14.zmi.at (mailsrv1.zmi.at [212.69.164.54]) by cuda.sgi.com with ESMTP id paSOThqNatXhvvsY for ; Wed, 08 Sep 2010 16:41:40 -0700 (PDT) From: Michael Monnerie Subject: Re: xfs mount/create options (was: XFS status update for August 2010) Date: Thu, 9 Sep 2010 01:30:15 +0200 References: <20100902145959.GA27887@infradead.org> <201009081538.54488@zmi.at> <20100908145148.GB705@dastard> In-Reply-To: <20100908145148.GB705@dastard> MIME-Version: 1.0 Message-Id: <201009090130.22983@zmi.at> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============6479083267095927087==" Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com --===============6479083267095927087== Content-Type: multipart/signed; boundary="nextPart7663428.vXVoHdNets"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit --nextPart7663428.vXVoHdNets Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable On Mittwoch, 8. September 2010 Dave Chinner wrote: > Dynamically changing the RAID array geometry is a Bad Idea. Yes, > you can do it, but if you've got a filesystem full of data and > metadata aligned to the old geometry then after the modification > it won't be aligned anymore. >=20 > If you want to do this, then either don't bother about geomtry hints > in the first place, or dump, rebuild the array, mkfs and restore so > everything is properly aligned with the new world order. Hell, > dump/mkfs/restore might even be faster than reshaping a large > array... =20 You're right. But there are some customers who don't want to spend the=20 money for a 2nd array, and can't afford the downtime of backup, rebuild=20 raid (takes 8-48 hours), restore. So an online upgrade is needed. We're=20 not in an ideal world. =2D-=20 mit freundlichen Gr=FCssen, Michael Monnerie, Ing. BSc it-management Internet Services http://proteger.at [gesprochen: Prot-e-schee] Tel: 0660 / 415 65 31 ****** Aktuelles Radiointerview! ****** http://www.it-podcast.at/aktuelle-sendung.html // Wir haben im Moment zwei H=E4user zu verkaufen: // http://zmi.at/langegg/ // http://zmi.at/haus2009/ --nextPart7663428.vXVoHdNets Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.12 (GNU/Linux) iEYEABECAAYFAkyIHI4ACgkQzhSR9xwSCbRXhACgjnLyPRvj3MaHqv9RlB5coNrZ xSAAoJ2V2i3tKxiLqqf8qTyw7AQpsvGG =fwwp -----END PGP SIGNATURE----- --nextPart7663428.vXVoHdNets-- --===============6479083267095927087== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs --===============6479083267095927087==--