From mboxrd@z Thu Jan 1 00:00:00 1970 From: Doug Ledford Subject: Re: Time to deprecate old RAID formats? Date: Fri, 19 Oct 2007 13:11:17 -0400 Message-ID: <1192813877.1666.79.camel@firewall.xsintricity.com> References: <18200.49267.763509.924873@stoffel.org> <18200.53593.687483.120827@stoffel.org> <1192810534.1666.68.camel@firewall.xsintricity.com> <18200.56684.14194.630264@stoffel.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-YV1w6lzYGb6HAPrR9TAj" Return-path: In-Reply-To: <18200.56684.14194.630264@stoffel.org> Sender: linux-raid-owner@vger.kernel.org To: John Stoffel Cc: Justin Piszcz , linux-raid@vger.kernel.org List-Id: linux-raid.ids --=-YV1w6lzYGb6HAPrR9TAj Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Fri, 2007-10-19 at 12:38 -0400, John Stoffel wrote: > 1, 1.0, 1.1, 1.2 >=20 > Use the new version-1 format superblock. This has few restrictions= . > The different sub-versions store the superblock at different locati= ons > on the device, either at the end (for 1.0), at the start (for 1.1) = or > 4K from the start (for 1.2). >=20 >=20 > It looks to me that the 1.1, combined with the 1.0 should be what we > use, with the 1.2 format nuked. Maybe call it 1.3? *grin* You're somewhat misreading the man page. You *can't* combine 1.0 with 1.1. All of the above options: 1, 1.0, 1.1, 1.2; specifically mean to use a version 1 superblock. 1.0 means use a version 1 superblock at the end of the disk. 1.1 means version 1 superblock at beginning of disk. `1.2 means version 1 at 4k offset from beginning of the disk. There really is no actual version 1.1, or 1.2, the .0, .1, and .2 part of the version *only* means where to put the version 1 superblock on the disk. If you just say version 1, then it goes to the default location for version 1 superblocks, and last I checked that was the end of disk (aka, 1.0). --=20 Doug Ledford GPG KeyID: CFBFF194 http://people.redhat.com/dledford Infiniband specific RPMs available at http://people.redhat.com/dledford/Infiniband --=-YV1w6lzYGb6HAPrR9TAj Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) iD8DBQBHGOU1TzP9PM7pjw8RAponAJ0b3bLg89bJOfdXJWkkEe2oL+5o3ACfc+xm A99AcUV79uBav4Xru8W1ib8= =QeOu -----END PGP SIGNATURE----- --=-YV1w6lzYGb6HAPrR9TAj--