From mboxrd@z Thu Jan 1 00:00:00 1970 From: "William L. Thomson Jr." Subject: Re: mdadm file system type check Date: Sat, 17 Mar 2007 14:50:10 -0400 Message-ID: <1174157410.17181.7.camel@wlt.obsidian-studios.com> References: <1174089424.22511.26.camel@wlt.obsidian-studios.com> <17915.17571.333717.668140@notabene.brown> <1174099334.13073.46.camel@wlt.obsidian-studios.com> <45FC2F2B.7070506@tmr.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-7STi5aXkTRBYynTtnY6n" Return-path: In-Reply-To: <45FC2F2B.7070506@tmr.com> Sender: linux-raid-owner@vger.kernel.org To: Bill Davidsen Cc: Neil Brown , linux-raid@vger.kernel.org List-Id: linux-raid.ids --=-7STi5aXkTRBYynTtnY6n Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Sat, 2007-03-17 at 13:10 -0500, Bill Davidsen wrote: > > First, please learn the difference between file system type (user data=20 > ON the device), and partition type (a byte in the partition table). Which it's technical name would be a partition system ID. However older versions of fdisk did refer to the t option as file system type. http://www.redhat.com/docs/manuals/linux/RHL-7.3-Manual/ref-guide/s1-filesy= stem-ext3-create.html Given it's quite old and all newer docs refer to it mainly as partition system id. At least that's what's shown in current fdisks t change a partition's system id Sorry for the miss-clarification. For the record, simply changing the partitions system id from 83 -> fd allowed the commands that previously failed to succeed and create the array. > Second, mdadm cares not a bit about the partition type, That would be my understanding of it so far, and experience with it. > although some=20 > init scripts might. FYI, this was a new install running on a livecd. So no init scripts were involved. > The reason it didn't work was because the partition=20 > was zero size or missing, and would not work regardless of the partition=20 > type. Negative, it's one of the things I suggested for them to take a look at. Even provided the snippet of the IRC log that I left out containing that information in another post. To save you from having to dig it out. Here it is again :) wltjr: kingtaco|work: likely something else, partition off, wrong fs type, = or etc kingtaco|work: /dev/sda1 1 17 136521 83 Linux kingtaco|work: /dev/sdb1 1 17 136521 83 Linux Also I really would not be reporting this, or wasting any one's time if it was not something abnormal. Thus reporting it, and my miss-clarification of stuff surely did not help explain the situation :) --=20 William L. Thomson Jr. Gentoo/Java --=-7STi5aXkTRBYynTtnY6n Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.3 (GNU/Linux) iD8DBQBF/DhiPrChP8zZLyYRAvGTAJ0aJfnralMdY+ldrM8mMaWKGL0QggCg1SFQ XsLSEnrY1HdR1vtMc1h+45Y= =SVTC -----END PGP SIGNATURE----- --=-7STi5aXkTRBYynTtnY6n--