From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay3-d.mail.gandi.net ([217.70.183.195]:33215 "EHLO relay3-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756131Ab2GCPKU (ORCPT ); Tue, 3 Jul 2012 11:10:20 -0400 Received: from mfilter3-d.gandi.net (mfilter3-d.gandi.net [217.70.178.133]) by relay3-d.mail.gandi.net (Postfix) with ESMTP id A95F7A80F7 for ; Tue, 3 Jul 2012 17:10:18 +0200 (CEST) Received: from relay3-d.mail.gandi.net ([217.70.183.195]) by mfilter3-d.gandi.net (mfilter3-d.gandi.net [10.0.15.180]) (amavisd-new, port 10024) with ESMTP id s7ByeFtFDha9 for ; Tue, 3 Jul 2012 17:10:17 +0200 (CEST) Received: from [192.168.5.100] (unknown [90.84.144.221]) (Authenticated sender: swami@petaramesh.org) by relay3-d.mail.gandi.net (Postfix) with ESMTPSA id 70AF8A80D5 for ; Tue, 3 Jul 2012 17:10:16 +0200 (CEST) Message-ID: <4FF30B55.6060205@petaramesh.org> Date: Tue, 03 Jul 2012 17:10:13 +0200 From: =?ISO-8859-1?Q?Sw=E2mi_Petaramesh?= MIME-Version: 1.0 To: linux-btrfs@vger.kernel.org Subject: BTRFS fsck apparent errors Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi there, A couple days ago, I have converted my Ubuntu Precise machine from ext4 to BTRFS using btrfs-convert. I currently use kernel: Linux fnix 3.2.0-26-generic #41-Ubuntu SMP Thu Jun 14 17:49:24 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux ...and a btrfs-tools package more recent than the old one that came with Ubuntu Precise: Version: 0.19+20120328-4ubuntu1 After I had shifted, I tried to defragment and compress my FS using commands such as : find /mnt/STORAGEFS/STORAGE/ -exec btrfs fi defrag -clzo -v {} \; During execution of such commands, my kernel oopsed, so I restarted. Afterwards, I noticed that, during the execution of such a command, my FS free space was quickly dropping, where I would have expected it to increase... Once finished, I checked a couple of BTRFS FSes using btrfsck, but I interpret the results as having some errors : root@fnix:/# btrfsck /dev/VG1/DEBMINT checking extents checking fs roots root 256 inode 257 errors 800 found 7814565888 bytes used err is 1 total csum bytes: 6264636 total tree bytes: 394928128 total fs tree bytes: 365121536 btree space waste bytes: 101451531 file data blocks allocated: 20067590144 referenced 13270241280 Btrfs Btrfs v0.19 root@fnix:/# btrfsck /dev/VG1/STORAGE checking extents checking fs roots root 301 inode 10644 errors 1000 root 301 inode 10687 errors 1000 root 301 inode 10688 errors 1000 root 301 inode 10749 errors 1000 found 55683117056 bytes used err is 1 total csum bytes: 54188580 total tree bytes: 191500288 total fs tree bytes: 103596032 btree space waste bytes: 49730472 file data blocks allocated: 55640522752 referenced 56466059264 Btrfs Btrfs v0.19 It doesn't seem that btrfsck attempts to fix these errors in any way... It just displays them. Besides this, my filesystem looks sane, but I suspect that at least my "STORAGE" FS uses much more space than it should... Are these errors serious ?Is there a way to get rid of them without reformatting ? TIA for any clue. Best regards.