From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@bugzilla.kernel.org Subject: [Bug 13930] non-contiguous files (64.9%) on a ext4 fs Date: Fri, 7 Aug 2009 22:38:00 GMT Message-ID: <200908072238.n77Mc0b4028521@demeter.kernel.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE To: linux-ext4@vger.kernel.org Return-path: Received: from demeter.kernel.org ([140.211.167.39]:41111 "EHLO demeter.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750867AbZHGWiB convert rfc822-to-8bit (ORCPT ); Fri, 7 Aug 2009 18:38:01 -0400 Received: from demeter.kernel.org (localhost.localdomain [127.0.0.1]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n77Mc0WG028522 for ; Fri, 7 Aug 2009 22:38:00 GMT In-Reply-To: Sender: linux-ext4-owner@vger.kernel.org List-ID: http://bugzilla.kernel.org/show_bug.cgi?id=3D13930 --- Comment #3 from C=C3=A9dric M 2009-08= -07 22:37:59 --- I have make some try on a 242MB file: du -h file 242M And after an: =46ilesystem type is: ef53 =46ile size of ****** is 253480960 (61885 blocks, blocksize 4096) ext logical physical expected length flags 0 0 215814144 2048=20 1 2048 215820288 215816191 2048=20 2 4096 215824384 215822335 2048=20 3 6144 215828480 215826431 2048=20 4 8192 215832576 215830527 2048=20 5 10240 215836672 215834623 2048=20 6 12288 215840768 215838719 2048=20 7 14336 215844864 215842815 2048=20 8 16384 215848960 215846911 2048=20 9 18432 215853056 215851007 26624=20 10 45056 215881728 215879679 2048=20 11 47104 215885824 215883775 2048=20 12 49152 215891968 215887871 2048=20 13 51200 215896064 215894015 2048=20 14 53248 215900160 215898111 2048=20 15 55296 215904256 215902207 2048=20 16 57344 215908352 215906303 2048=20 17 59392 215912448 215910399 2048=20 18 61440 215918592 215914495 445 eof So why so much extend ? (ie: ALL files have been write one to one on the whole disk (like a "cp= -R /cifs /ext4) (not torrent/crappy_speed_download_tools/etc ... things)) With a full dir: (for / du -h / filefrag / sed ) 180M =20 : 12 extents found 181M =20 : 20 extents found 281M =20 : 22 extents found 275M =20 : 22 extents found 275M =20 : 22 extents found 181M =20 : 20 extents found 281M =20 : 22 extents found 281M =20 : 21 extents found 277M =20 : 21 extents found 280M =20 : 21 extents found 180M =20 : 21 extents found 285M =20 : 13 extents found 180M =20 : 6 extents found --=20 Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=3Demail ------- You are receiving this mail because: ------- You are watching the assignee of the bug.-- To unsubscribe from this list: send the line "unsubscribe linux-ext4" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html