From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from magic.merlins.org ([209.81.13.136]:53975 "EHLO mail1.merlins.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753437AbaDMQ7I (ORCPT ); Sun, 13 Apr 2014 12:59:08 -0400 Date: Sun, 13 Apr 2014 09:59:07 -0700 From: Marc MERLIN To: linux-btrfs@vger.kernel.org, Chris Mason , Duncan <1i5t5.duncan@cox.net> Cc: Josef Bacik Subject: Re: what does your btrfsck look like? Message-ID: <20140413165907.GC7322@merlins.org> References: <20140407160506.GG10789@merlins.org> <5342CE0C.3070707@fb.com> <20140407185121.GI10222@merlins.org> <5342FD3D.3090905@fb.com> <20140407200002.GL1809@merlins.org> <20140409173842.GT10789@merlins.org> <20140325014956.GG11533@merlins.org> <20140412202542.GW7322@merlins.org> <20140413145700.GY7322@merlins.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20140413145700.GY7322@merlins.org> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Sun, Apr 13, 2014 at 07:57:00AM -0700, Marc MERLIN wrote: > On Sat, Apr 12, 2014 at 01:25:42PM -0700, Marc MERLIN wrote: > > (I have a btrfsck running, looks like it may take over an hour, so I'll post > > that after it's finished) > > I ran out of patience after 18 hours of waiting since it seemed to have not > progressed after 12 hours (it was still doing stuff, but no more output on > the screen). > > Let's look at the output: > 1794407 lines of lines similar to: > Extent back ref already exists for 2148837945344 parent 0 root 257 > > 61 lines of > leaf parent key incorrect 504993210368 > > 67 lines of > bad block 504993210368 > => just curious, what is this one supposed to mean? Is the data checksum > bad, or something else? We had a chat about btrfsck running clean in some cases. Sure enough, it did for me on a filesystem I had just created. But on existing filesystems I've been using for a while, it never has for me has per the example above. I've added some info to: https://btrfs.wiki.kernel.org/index.php/Btrfsck Two questions: 1) are others seeing errors like these: Extent back ref already exists for 2148837945344 parent 0 root 257 leaf parent key incorrect 504993210368 bad block 504993210368 2) do you know how bad each one is, and should they all be picked up by a scrub? (I'm under the impression that they were not for me) I'm happy to further update the wiki on btrfsck with info you can contribute. Thanks, Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/