From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from frost.carfax.org.uk ([85.119.82.111]:38866 "EHLO frost.carfax.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751773AbaL3VoT (ORCPT ); Tue, 30 Dec 2014 16:44:19 -0500 Date: Tue, 30 Dec 2014 21:44:17 +0000 From: Hugo Mills To: Tomasz Chmielewski Cc: linux-btrfs Subject: Re: Btrfs progs release 3.18 Message-ID: <20141230214417.GC26040@carfax.org.uk> References: <09d8530e73aed4552f1b3a6297c20360@admin.virtall.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="NU0Ex4SbNnrxsi6C" In-Reply-To: <09d8530e73aed4552f1b3a6297c20360@admin.virtall.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: --NU0Ex4SbNnrxsi6C Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Dec 30, 2014 at 10:38:38PM +0100, Tomasz Chmielewski wrote: > >* filesystem usage - give an overview of fs usage in a way (=E9=81=93, > >=E3=81=BF=E3=81=A1, michi) that's more > >* device usage - more detailed information about per-device allocations > > * same restrictions as for 'fi usage' >=20 > Interesting. >=20 > Used these to create a filesystem, with btrfs-progs v3.17.3: >=20 > # mkfs.btrfs -O skinny-metadata -d raid1 -m raid1 /dev/sda4 /dev/sdb4 -f >=20 >=20 > Now, with btrfs-progs 3.18 and these new options I can see that the > fs is partially single, not RAID-1 - how come? It's always been like that with a new FS. The small single chunks are part of the way that mkfs works, and will go away on the first balance operation. It's harmless, and can safely be ignored. Hugo. > # btrfs fil us /srv > Overall: > Device size: 5.25TiB > Device allocated: 510.04GiB > Device unallocated: 4.76TiB > Used: 505.39GiB > Free (estimated): 2.38TiB (min: 2.38TiB) > Data ratio: 2.00 > Metadata ratio: 2.00 > Global reserve: 512.00MiB (used: 0.00B) >=20 > Data,single: Size:8.00MiB, Used:0.00B > /dev/sda4 8.00MiB >=20 > Data,RAID1: Size:252.00GiB, Used:250.56GiB > /dev/sda4 252.00GiB > /dev/sdb4 252.00GiB >=20 > Metadata,single: Size:8.00MiB, Used:0.00B > /dev/sda4 8.00MiB >=20 > Metadata,RAID1: Size:3.00GiB, Used:2.13GiB > /dev/sda4 3.00GiB > /dev/sdb4 3.00GiB >=20 > System,single: Size:4.00MiB, Used:0.00B > /dev/sda4 4.00MiB >=20 > System,RAID1: Size:8.00MiB, Used:64.00KiB > /dev/sda4 8.00MiB > /dev/sdb4 8.00MiB >=20 > Unallocated: > /dev/sda4 2.38TiB > /dev/sdb4 2.38TiB >=20 >=20 > root@backup01 ~ # btrfs dev us /srv > /dev/sda4, ID: 1 > Device size: 2.63TiB > Data,single: 8.00MiB > Data,RAID1: 252.00GiB > Metadata,single: 8.00MiB > Metadata,RAID1: 3.00GiB > System,single: 4.00MiB > System,RAID1: 8.00MiB > Unallocated: 2.38TiB >=20 > /dev/sdb4, ID: 2 > Device size: 2.63TiB > Data,RAID1: 252.00GiB > Metadata,RAID1: 3.00GiB > System,RAID1: 8.00MiB > Unallocated: 2.38TiB >=20 >=20 --=20 Hugo Mills | The trouble with you, Ibid, is you think you know hugo@... carfax.org.uk | everything. http://carfax.org.uk/ | PGP: 65E74AC0 | --NU0Ex4SbNnrxsi6C Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBAgAGBQJUoxywAAoJEFheFHXiqx3kAwYQAIpCHBHDwHg1R+UeKQkGfQUe IAzANVHWSuBpTOQux1LupUPVuf88f092fakmCKfdgN+8vRhThUE1WY9VA/mWrTNM yYeOMKPXYqeZZjKM5PHhdJ2lCQleOlIcIILCVM/inkVPGDSmfXVP/hO12ZH9Yl5a Y6JG73QdWvv2vwRcG7xET5ynoWSy0x2eE2XGREVEpC4WpgE8hA/nBfc3YaJErXed O+PKo3bgBBUNqgqw+7OjtyHByTJYRkxiz7kpINt5vHJTgFxpbsFj8uLuvJRLBCwd JIUPoIkwduoxHtfs8ObzDaRceYyqENgvOVpYg0NmjsxTF5NQuLHZJZBHkwCVkTSD gbAnB113RHewrnWzt4EgbK3j+jBLiYjKpEDdeAhF2KDCSypvu6hS2v3QJ5TYorMn I/lEIbEO+IOEEDAYiJV45kucP24bpu0sLdR0X0I8veZUJqlAscBZkISAlO4fll/N HEVFopaPuHxr+WnbtgugAZwY1WtynA9JzynbYllSjkk8GzT7TOQvexPKBky+fj1Z 9nEb+3nnFIyDKapTyeXxj9fAnAtvKQRqhaqD1+igjNL7Vhw1NryZH+/KbM4hdq8K W711qKEobp+MEJ42hiXVcLA7TiVjUyr5vI7Vbxhk+0++kJSNaRhse+j5YcbrEwyH E8zeNf6sl9O6k7dsMQuT =5ll6 -----END PGP SIGNATURE----- --NU0Ex4SbNnrxsi6C--