From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cn.fujitsu.com ([59.151.112.132]:18185 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1753281AbcAHBtR (ORCPT ); Thu, 7 Jan 2016 20:49:17 -0500 Subject: Re: Recovery of a raid1 FS To: Tom Hunt References: <568DFF73.7080705@cn.fujitsu.com> CC: From: Qu Wenruo Message-ID: <568F158A.30601@cn.fujitsu.com> Date: Fri, 8 Jan 2016 09:48:58 +0800 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8"; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: Tom Hunt wrote on 2016/01/07 18:43 -0700: > I had done this already, but somehow forgot to include it. (Internet > suggests 'btrfs check' is synonym for 'btrfsck'; if this is not the > case, please advise.) > > [root@archiso ~]# btrfs check /dev/mapper/rootvol_1 > bad key ordering 49 50 > Checking filesystem on /dev/mapper/rootvol_1 > UUID: 91f7e058-1142-4036-b1f7-4f64163dc8ae > checking extents > bad key ordering 55 56 > bad block 6210223521792 > Errors found in extent allocation tree or chunk allocation > bad key ordering 55 56 Does the sudden end means a segfault? > > And the other: > > [root@archiso ~]# btrfs-debug-tree /dev/mapper/rootvol_1 -b 6210228551680 > bad key ordering 49 50 > leaf 6210228551680 items 195 free space 244 generation 257371 owner 2 That's extent tree, not a big problem as the whole extent tree can be easily rebuilt. And what's the output of btrfs-debug-tree /dev/mapper/rootvol_1 -b 6210223521792? If btrfs-debug-tree can still output things like below, and the leaf's owner is still 2, I'd recommend to run btrfsck --init-extent-tree, which should has a good chance to fix it. Although even in that case, I'm not 100% sure if it will work, or do more damage... Thanks, Qu > fs uuid 91f7e058-1142-4036-b1f7-4f64163dc8ae > chunk uuid 6abf465c-c677-4879-a4ca-d632e43e01e4 > item 0 key (7777093095424 EXTENT_ITEM 4096) itemoff 16217 itemsize 66 > extent refs 2 gen 96498 flags DATA > extent data backref root 258 objectid 1319842 offset > 16289792 count 1 > shared data backref parent 7588669325312 count 1 > item 1 key (7777093099520 EXTENT_ITEM 4096) itemoff 16151 itemsize 66 > extent refs 2 gen 96498 flags DATA > extent data backref root 258 objectid 1319842 offset > 20484096 count 1 > shared data backref parent 7588669325312 count 1 > item 2 key (7777093103616 EXTENT_ITEM 4096) itemoff 16085 itemsize 66 > extent refs 2 gen 96498 flags DATA > extent data backref root 258 objectid 1319842 offset > 22581248 count 1 > shared data backref parent 7588669325312 count 1 > item 3 key (7777093107712 EXTENT_ITEM 4096) itemoff 16019 itemsize 66 > extent refs 2 gen 96501 flags DATA > extent data backref root 258 objectid 1319842 offset > 56135680 count 1 > shared data backref parent 7343916351488 count 1 > item 4 key (7777093111808 EXTENT_ITEM 4096) itemoff 15953 itemsize 66 > extent refs 2 gen 96501 flags DATA > extent data backref root 258 objectid 1319842 offset > 58232832 count 1 > shared data backref parent 7343916351488 count 1 > item 5 key (7777093115904 EXTENT_ITEM 4096) itemoff 15887 itemsize 66 > extent refs 2 gen 96511 flags DATA > extent data backref root 258 objectid 1319842 offset > 35164160 count 1 > shared data backref parent 7588669325312 count 1 > item 6 key (7777093120000 EXTENT_ITEM 4096) itemoff 15821 itemsize 66 > extent refs 2 gen 96511 flags DATA > extent data backref root 258 objectid 1319842 offset > 37261312 count 1 > shared data backref parent 7588669325312 count 1 > item 7 key (7777093124096 EXTENT_ITEM 4096) itemoff 15755 itemsize 66 > extent refs 2 gen 96521 flags DATA > extent data backref root 258 objectid 1319842 offset > 45649920 count 1 > shared data backref parent 7343916351488 count 1 > item 8 key (7777093128192 EXTENT_ITEM 4096) itemoff 15689 itemsize 66 > extent refs 2 gen 96521 flags DATA > extent data backref root 258 objectid 1319842 offset > 47747072 count 1 > shared data backref parent 7343916351488 count 1 > item 9 key (7777093132288 EXTENT_ITEM 4096) itemoff 15636 itemsize 53 > extent refs 1 gen 128816 flags DATA > extent data backref root 258 objectid 1747043 offset > 208896 count 1 > item 10 key (7777093136384 EXTENT_ITEM 4096) itemoff 15583 itemsize 53 > extent refs 1 gen 128816 flags DATA > extent data backref root 258 objectid 1747043 offset > 1191936 count 1 > item 11 key (7777093140480 EXTENT_ITEM 4096) itemoff 15530 itemsize 53 > extent refs 1 gen 128816 flags DATA > extent data backref root 258 objectid 1747043 offset > 1896448 count 1 > item 12 key (7777093144576 EXTENT_ITEM 4096) itemoff 15477 itemsize 53 > extent refs 1 gen 128824 flags DATA > extent data backref root 258 objectid 1746670 offset > 3141632 count 1 > item 13 key (7777093148672 EXTENT_ITEM 4096) itemoff 15424 itemsize 53 > extent refs 1 gen 128824 flags DATA > extent data backref root 258 objectid 1746670 offset > 7335936 count 1 > item 14 key (7777093152768 EXTENT_ITEM 4096) itemoff 15371 itemsize 53 > extent refs 1 gen 128827 flags DATA > extent data backref root 258 objectid 1746598 offset > 2142208 count 1 > item 15 key (7777093156864 EXTENT_ITEM 4096) itemoff 15318 itemsize 53 > extent refs 1 gen 128827 flags DATA > extent data backref root 258 objectid 1746598 offset > 6336512 count 1 > item 16 key (7777093160960 EXTENT_ITEM 1167360) itemoff 15265 > itemsize 53 > extent refs 1 gen 148358 flags DATA > extent data backref root 258 objectid 800697 offset > 219987968 count 1 > item 17 key (7777094328320 EXTENT_ITEM 4096) itemoff 15212 itemsize 53 > extent refs 1 gen 152899 flags DATA > extent data backref root 258 objectid 2111468 offset > 909312 count 1 > item 18 key (7777094332416 EXTENT_ITEM 20480) itemoff 15159 itemsize 53 > extent refs 1 gen 185891 flags DATA > extent data backref root 7565 objectid 135103 offset 0 count 1 > item 19 key (7777094356992 EXTENT_ITEM 18608128) itemoff 15106 > itemsize 53 > extent refs 1 gen 93646 flags DATA > extent data backref root 257 objectid 1798430 offset 0 count 1 > item 20 key (7777112965120 EXTENT_ITEM 2465792) itemoff 15053 > itemsize 53 > extent refs 1 gen 93647 flags DATA > extent data backref root 257 objectid 1798304 offset 0 count 1 > item 21 key (7777115430912 EXTENT_ITEM 2441216) itemoff 15000 > itemsize 53 > extent refs 1 gen 93647 flags DATA > extent data backref root 257 objectid 1798413 offset 0 count 1 > item 22 key (7777117872128 EXTENT_ITEM 2617344) itemoff 14947 > itemsize 53 > extent refs 1 gen 93647 flags DATA > extent data backref root 257 objectid 1798416 offset 0 count 1 > item 23 key (7777120489472 EXTENT_ITEM 2592768) itemoff 14894 > itemsize 53 > extent refs 1 gen 93647 flags DATA > extent data backref root 257 objectid 1798419 offset 0 count 1 > item 24 key (7777123082240 EXTENT_ITEM 2355200) itemoff 14841 > itemsize 53 > extent refs 1 gen 93647 flags DATA > extent data backref root 257 objectid 1798422 offset 0 count 1 > item 25 key (7777125437440 EXTENT_ITEM 2469888) itemoff 14788 > itemsize 53 > extent refs 1 gen 93647 flags DATA > extent data backref root 257 objectid 1798425 offset 0 count 1 > item 26 key (7777127907328 EXTENT_ITEM 2646016) itemoff 14735 > itemsize 53 > extent refs 1 gen 93647 flags DATA > extent data backref root 257 objectid 1798428 offset 0 count 1 > item 27 key (7777130553344 EXTENT_ITEM 2461696) itemoff 14682 > itemsize 53 > extent refs 1 gen 93647 flags DATA > extent data backref root 257 objectid 1798446 offset 0 count 1 > item 28 key (7777133015040 EXTENT_ITEM 2637824) itemoff 14629 > itemsize 53 > extent refs 1 gen 93647 flags DATA > extent data backref root 257 objectid 1798449 offset 0 count 1 > item 29 key (7777135652864 EXTENT_ITEM 2609152) itemoff 14576 > itemsize 53 > extent refs 1 gen 93647 flags DATA > extent data backref root 257 objectid 1798452 offset 0 count 1 > item 30 key (7777138262016 EXTENT_ITEM 2375680) itemoff 14523 > itemsize 53 > extent refs 1 gen 93647 flags DATA > extent data backref root 257 objectid 1798455 offset 0 count 1 > item 31 key (7777140637696 EXTENT_ITEM 2490368) itemoff 14470 > itemsize 53 > extent refs 1 gen 93647 flags DATA > extent data backref root 257 objectid 1798458 offset 0 count 1 > item 32 key (7777143128064 EXTENT_ITEM 2666496) itemoff 14417 > itemsize 53 > extent refs 1 gen 93647 flags DATA > extent data backref root 257 objectid 1798461 offset 0 count 1 > item 33 key (7777145794560 EXTENT_ITEM 348160) itemoff 14364 itemsize 53 > extent refs 1 gen 148361 flags DATA > extent data backref root 258 objectid 800697 offset > 221151232 count 1 > item 34 key (7777146142720 EXTENT_ITEM 913408) itemoff 14311 itemsize 53 > extent refs 1 gen 152889 flags DATA > extent data backref root 258 objectid 2111468 offset 0 count 1 > item 35 key (7777147056128 EXTENT_ITEM 32768) itemoff 14258 itemsize 53 > extent refs 1 gen 185891 flags DATA > extent data backref root 7565 objectid 135085 offset 0 count 1 > item 36 key (7777147088896 EXTENT_ITEM 12288) itemoff 14205 itemsize 53 > extent refs 1 gen 185891 flags DATA > extent data backref root 7565 objectid 135105 offset 0 count 1 > item 37 key (7777147105280 EXTENT_ITEM 10260480) itemoff 14152 > itemsize 53 > extent refs 3 gen 128803 flags DATA > extent data backref root 258 objectid 1746598 offset 0 count 3 > item 38 key (7777157365760 EXTENT_ITEM 4096) itemoff 14099 itemsize 53 > extent refs 1 gen 257306 flags DATA > extent data backref root 258 objectid 839874 offset > 1716224 count 1 > item 39 key (7777157369856 EXTENT_ITEM 262144) itemoff 14046 itemsize 53 > extent refs 1 gen 239739 flags DATA > extent data backref root 1 objectid 4315 offset 0 count 1 > item 40 key (7777157632000 EXTENT_ITEM 4096) itemoff 13993 itemsize 53 > extent refs 1 gen 257306 flags DATA > extent data backref root 258 objectid 839874 offset > 1724416 count 1 > item 41 key (7777157636096 EXTENT_ITEM 28672) itemoff 13940 itemsize 53 > extent refs 1 gen 239755 flags DATA > extent data backref root 7565 objectid 218350 offset 0 count 1 > item 42 key (7777157672960 EXTENT_ITEM 262144) itemoff 13887 itemsize 53 > extent refs 1 gen 251770 flags DATA > extent data backref root 1 objectid 7446 offset 0 count 1 > item 43 key (7777157947392 EXTENT_ITEM 12288) itemoff 13834 itemsize 53 > extent refs 1 gen 257266 flags DATA > extent data backref root 258 objectid 839874 offset > 1716224 count 1 > item 44 key (7777157963776 EXTENT_ITEM 204800) itemoff 13781 itemsize 53 > extent refs 1 gen 239712 flags DATA > extent data backref root 7565 objectid 151704 offset 0 count 1 > item 45 key (7777158168576 EXTENT_ITEM 8192) itemoff 13728 itemsize 53 > extent refs 1 gen 239755 flags DATA > extent data backref root 7565 objectid 218364 offset 0 count 1 > item 46 key (7777158176768 EXTENT_ITEM 8192) itemoff 13675 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158076 offset 0 count 1 > item 47 key (7777158184960 EXTENT_ITEM 24576) itemoff 13622 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158077 offset 0 count 1 > item 48 key (7777158209536 EXTENT_ITEM 262144) itemoff 13569 itemsize 53 > extent refs 1 gen 250487 flags DATA > extent data backref root 1 objectid 7042 offset 0 count 1 > item 49 key (7777159520256 EXTENT_ITEM 868352) itemoff 13516 itemsize 53 > extent refs 1 gen 218523 flags DATA > extent data backref root 258 objectid 3429613 offset 0 count 1 > item 50 key (7777159340032 EXTENT_ITEM 262144) itemoff 13463 itemsize 53 > extent refs 1 gen 252003 flags DATA > extent data backref root 1 objectid 6709 offset 0 count 1 > item 51 key (7777159602176 EXTENT_ITEM 8192) itemoff 13410 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158078 offset 0 count 1 > item 52 key (7777159610368 EXTENT_ITEM 8192) itemoff 13357 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158082 offset 0 count 1 > item 53 key (7777159618560 EXTENT_ITEM 20480) itemoff 13304 itemsize 53 > extent refs 1 gen 253796 flags DATA > extent data backref root 258 objectid 839874 offset > 1708032 count 1 > item 54 key (7777159770112 EXTENT_ITEM 53248) itemoff 13251 itemsize 53 > extent refs 1 gen 239735 flags DATA > extent data backref root 7565 objectid 180984 offset 0 count 1 > item 55 key (7777159823360 EXTENT_ITEM 28672) itemoff 13198 itemsize 53 > extent refs 1 gen 239735 flags DATA > extent data backref root 7565 objectid 181027 offset 0 count 1 > item 56 key (7777159852032 EXTENT_ITEM 20480) itemoff 13145 itemsize 53 > extent refs 1 gen 239735 flags DATA > extent data backref root 7565 objectid 181029 offset 0 count 1 > item 57 key (7777159872512 EXTENT_ITEM 8192) itemoff 13092 itemsize 53 > extent refs 1 gen 239736 flags DATA > extent data backref root 7565 objectid 181418 offset 0 count 1 > item 58 key (7777159880704 EXTENT_ITEM 12288) itemoff 13039 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158079 offset 0 count 1 > item 59 key (7777159892992 EXTENT_ITEM 131072) itemoff 12986 itemsize 53 > extent refs 1 gen 152898 flags DATA > extent data backref root 258 objectid 2111468 offset > 913408 count 1 > item 60 key (7777160024064 EXTENT_ITEM 8192) itemoff 12933 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158085 offset 0 count 1 > item 61 key (7777160040448 EXTENT_ITEM 12288) itemoff 12880 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158081 offset 0 count 1 > item 62 key (7777160052736 EXTENT_ITEM 16384) itemoff 12827 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158083 offset 0 count 1 > item 63 key (7777160069120 EXTENT_ITEM 12288) itemoff 12774 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158084 offset 0 count 1 > item 64 key (7777160081408 EXTENT_ITEM 8192) itemoff 12721 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158086 offset 0 count 1 > item 65 key (7777160093696 EXTENT_ITEM 4096) itemoff 12668 itemsize 53 > extent refs 1 gen 191200 flags DATA > extent data backref root 258 objectid 839874 offset > 1728512 count 1 > item 66 key (7777160097792 EXTENT_ITEM 8192) itemoff 12615 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158088 offset 0 count 1 > item 67 key (7777160105984 EXTENT_ITEM 24576) itemoff 12562 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158090 offset 0 count 1 > item 68 key (7777160130560 EXTENT_ITEM 16384) itemoff 12509 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158092 offset 0 count 1 > item 69 key (7777160146944 EXTENT_ITEM 8192) itemoff 12456 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158093 offset 0 count 1 > item 70 key (7777160155136 EXTENT_ITEM 8192) itemoff 12403 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158095 offset 0 count 1 > item 71 key (7777160163328 EXTENT_ITEM 8192) itemoff 12350 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158099 offset 0 count 1 > item 72 key (7777160171520 EXTENT_ITEM 8192) itemoff 12297 itemsize 53 > extent refs 1 gen 239734 flags DATA > extent data backref root 7565 objectid 158101 offset 0 count 1 > item 73 key (7777160179712 EXTENT_ITEM 32768) itemoff 12244 itemsize 53 > extent refs 1 gen 185891 flags DATA > extent data backref root 7565 objectid 135098 offset 0 count 1 > item 74 key (7777160212480 EXTENT_ITEM 9064448) itemoff 12191 > itemsize 53 > extent refs 3 gen 128804 flags DATA > extent data backref root 258 objectid 1746670 offset 0 count 3 > item 75 key (7777169276928 EXTENT_ITEM 5619712) itemoff 12138 > itemsize 53 > extent refs 4 gen 128815 flags DATA > extent data backref root 258 objectid 1747043 offset 0 count 4 > item 76 key (7777174896640 EXTENT_ITEM 49152) itemoff 12085 itemsize 53 > extent refs 1 gen 185891 flags DATA > extent data backref root 7565 objectid 135087 offset 0 count 1 > item 77 key (7777174945792 EXTENT_ITEM 268435456) itemoff > 12019 itemsize 66 > extent refs 4 gen 86553 flags DATA > extent data backref root 258 objectid 1257818 offset 0 count 2 > shared data backref parent 3804574728192 count 2 > item 78 key (7777174945792 BLOCK_GROUP_ITEM 1073741824) > itemoff 11995 itemsize 24 > block group used 1073135616 chunk_objectid 256 flags DATA|RAID1 > item 79 key (7777443381248 EXTENT_ITEM 211255296) itemoff > 11929 itemsize 66 > extent refs 2 gen 86553 flags DATA > extent data backref root 258 objectid 1257818 offset > 268435456 count 1 > shared data backref parent 3804574728192 count 1 > item 80 key (7777654636544 EXTENT_ITEM 268435456) itemoff > 11863 itemsize 66 > extent refs 147 gen 86553 flags DATA > extent data backref root 258 objectid 1257819 offset 0 count 101 > shared data backref parent 3804574728192 count 46 > item 81 key (7777923072000 EXTENT_ITEM 211009536) itemoff > 11797 itemsize 66 > extent refs 167 gen 86553 flags DATA > extent data backref root 258 objectid 1257819 offset > 268435456 count 96 > shared data backref parent 5253034229760 count 71 > item 82 key (7778134081536 EXTENT_ITEM 4096) itemoff 11731 itemsize 66 > extent refs 2 gen 86555 flags DATA > extent data backref root 258 objectid 1257819 offset > 341114880 count 1 > shared data backref parent 5253034229760 count 1 > item 83 key (7778134085632 EXTENT_ITEM 4096) itemoff 11665 itemsize 66 > extent refs 2 gen 86557 flags DATA > extent data backref root 258 objectid 1257819 offset > 402767872 count 1 > shared data backref parent 5253034229760 count 1 > item 84 key (7778134089728 EXTENT_ITEM 4096) itemoff 11599 itemsize 66 > extent refs 2 gen 86560 flags DATA > extent data backref root 258 objectid 1257819 offset > 13631488 count 1 > shared data backref parent 3804574728192 count 1 > item 85 key (7778134093824 EXTENT_ITEM 4096) itemoff 11533 itemsize 66 > extent refs 2 gen 86560 flags DATA > extent data backref root 258 objectid 1257819 offset > 13975552 count 1 > shared data backref parent 3804574728192 count 1 > item 86 key (7778134097920 EXTENT_ITEM 4096) itemoff 11467 itemsize 66 > extent refs 2 gen 86560 flags DATA > extent data backref root 258 objectid 1257819 offset > 16236544 count 1 > shared data backref parent 3804574728192 count 1 > item 87 key (7778134102016 EXTENT_ITEM 4096) itemoff 11401 itemsize 66 > extent refs 2 gen 86560 flags DATA > extent data backref root 258 objectid 1257819 offset > 16351232 count 1 > shared data backref parent 3804574728192 count 1 > item 88 key (7778134106112 EXTENT_ITEM 4096) itemoff 11335 itemsize 66 > extent refs 2 gen 86564 flags DATA > extent data backref root 258 objectid 1257819 offset > 406962176 count 1 > shared data backref parent 5253034229760 count 1 > item 89 key (7778134110208 EXTENT_ITEM 4096) itemoff 11269 itemsize 66 > extent refs 2 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 46923776 count 1 > shared data backref parent 3804574728192 count 1 > item 90 key (7778134114304 EXTENT_ITEM 4096) itemoff 11203 itemsize 66 > extent refs 2 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 47644672 count 1 > shared data backref parent 3804574728192 count 1 > item 91 key (7778134118400 EXTENT_ITEM 4096) itemoff 11137 itemsize 66 > extent refs 2 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 49020928 count 1 > shared data backref parent 3804574728192 count 1 > item 92 key (7778134122496 EXTENT_ITEM 4096) itemoff 11071 itemsize 66 > extent refs 2 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 49037312 count 1 > shared data backref parent 3804574728192 count 1 > item 93 key (7778134126592 EXTENT_ITEM 4096) itemoff 11018 itemsize 53 > extent refs 1 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 180797440 count 1 > item 94 key (7778134130688 EXTENT_ITEM 4096) itemoff 10965 itemsize 53 > extent refs 1 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 182140928 count 1 > item 95 key (7778134134784 EXTENT_ITEM 4096) itemoff 10912 itemsize 53 > extent refs 1 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 182222848 count 1 > item 96 key (7778134138880 EXTENT_ITEM 4096) itemoff 10859 itemsize 53 > extent refs 1 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 201441280 count 1 > item 97 key (7778134142976 EXTENT_ITEM 4096) itemoff 10806 itemsize 53 > extent refs 1 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 205635584 count 1 > item 98 key (7778134147072 EXTENT_ITEM 4096) itemoff 10753 itemsize 53 > extent refs 1 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 209829888 count 1 > item 99 key (7778134151168 EXTENT_ITEM 4096) itemoff 10700 itemsize 53 > extent refs 1 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 210206720 count 1 > item 100 key (7778134155264 EXTENT_ITEM 4096) itemoff 10647 itemsize 53 > extent refs 1 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 212451328 count 1 > item 101 key (7778134159360 EXTENT_ITEM 4096) itemoff 10594 itemsize 53 > extent refs 1 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 212467712 count 1 > item 102 key (7778134163456 EXTENT_ITEM 4096) itemoff 10541 itemsize 53 > extent refs 1 gen 86565 flags DATA > extent data backref root 258 objectid 1257819 offset > 213712896 count 1 > item 103 key (7778134167552 EXTENT_ITEM 4096) itemoff 10488 itemsize 53 > extent refs 1 gen 86567 flags DATA > extent data backref root 258 objectid 1257819 offset > 176275456 count 1 > item 104 key (7778134171648 EXTENT_ITEM 4096) itemoff 10435 itemsize 53 > extent refs 1 gen 86567 flags DATA > extent data backref root 258 objectid 1257819 offset > 180469760 count 1 > item 105 key (7778134175744 EXTENT_ITEM 4096) itemoff 10369 itemsize 66 > extent refs 2 gen 86571 flags DATA > extent data backref root 258 objectid 1257819 offset > 365379584 count 1 > shared data backref parent 5253034229760 count 1 > item 106 key (7778134179840 EXTENT_ITEM 4096) itemoff 10303 itemsize 66 > extent refs 2 gen 86571 flags DATA > extent data backref root 258 objectid 1257819 offset > 368951296 count 1 > shared data backref parent 5253034229760 count 1 > item 107 key (7778134183936 EXTENT_ITEM 4096) itemoff 10237 itemsize 66 > extent refs 2 gen 86572 flags DATA > extent data backref root 258 objectid 1257819 offset > 12697600 count 1 > shared data backref parent 3804574728192 count 1 > item 108 key (7778134188032 EXTENT_ITEM 4096) itemoff 10184 itemsize 53 > extent refs 1 gen 86572 flags DATA > extent data backref root 258 objectid 1257819 offset > 151109632 count 1 > item 109 key (7778134192128 EXTENT_ITEM 4096) itemoff 10131 itemsize 53 > extent refs 1 gen 86572 flags DATA > extent data backref root 258 objectid 1257819 offset > 255967232 count 1 > item 110 key (7778134196224 EXTENT_ITEM 4096) itemoff 10078 itemsize 53 > extent refs 1 gen 86574 flags DATA > extent data backref root 258 objectid 1257819 offset > 148488192 count 1 > item 111 key (7778134200320 EXTENT_ITEM 4096) itemoff 10025 itemsize 53 > extent refs 1 gen 86574 flags DATA > extent data backref root 258 objectid 1257819 offset > 148635648 count 1 > item 112 key (7778134204416 EXTENT_ITEM 4096) itemoff 9972 itemsize 53 > extent refs 1 gen 86574 flags DATA > extent data backref root 258 objectid 1257819 offset > 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data backref root 258 objectid 1257819 offset > 472039424 count 1 > shared data backref parent 5253034229760 count 1 > item 190 key (7778134523904 EXTENT_ITEM 4096) itemoff 5357 itemsize 66 > extent refs 2 gen 86612 flags DATA > extent data backref root 258 objectid 1257819 offset > 369213440 count 1 > shared data backref parent 5253034229760 count 1 > item 191 key (7778134528000 EXTENT_ITEM 4096) itemoff 5291 itemsize 66 > extent refs 2 gen 86613 flags DATA > extent data backref root 258 objectid 1257819 offset > 372703232 count 1 > shared data backref parent 5253034229760 count 1 > item 192 key (7778134532096 EXTENT_ITEM 4096) itemoff 5225 itemsize 66 > extent refs 2 gen 86613 flags DATA > extent data backref root 258 objectid 1257819 offset > 372768768 count 1 > shared data backref parent 5253034229760 count 1 > item 193 key (7778134536192 EXTENT_ITEM 4096) itemoff 5172 itemsize 53 > extent refs 1 gen 86614 flags DATA > extent data backref root 258 objectid 1257819 offset > 222412800 count 1 > item 194 key (7778134540288 EXTENT_ITEM 4096) itemoff 5119 itemsize 53 > extent refs 1 gen 86614 flags DATA > extent data backref root 258 objectid 1257819 offset > 226607104 count 1 > > On Wed, Jan 6, 2016 at 11:02 PM, Qu Wenruo wrote: >> Did you tried btrfsck without --repair? >> >> And would you please paste the output of the following command? >> >> # btrfs-debug-tree -b 6210228551680 >> >> Thanks, >> Qu >> >> >> Tom Hunt wrote on 2016/01/06 22:16 -0700: >>> >>> Some things I missed: >>> >>> [root@archiso ~]# uname -a >>> Linux archiso 4.2.5-1-ARCH #1 SMP PREEMPT Tue Oct 27 08:13:28 CET 2015 >>> x86_64 GNU/Linux >>> [root@archiso ~]# btrfs --version >>> btrfs-progs v4.3.1 >>> [root@archiso ~]# btrfs fi show >>> Label: none uuid: 91f7e058-1142-4036-b1f7-4f64163dc8ae >>> Total devices 2 FS bytes used 3.84TiB >>> devid 1 size 5.45TiB used 3.86TiB path /dev/mapper/rootvol_1 >>> devid 2 size 5.45TiB used 3.86TiB path /dev/mapper/rootvol_2 >>> >>> >>> This is a liveUSB, but the machine that was running was also an up-to-date >>> Arch. >>> >>> On Wed, Jan 6, 2016 at 9:02 PM, Tom Hunt wrote: >>>> >>>> I've got a two-disk RAID1 btrfs volume, which crashed for no apparent >>>> reason and was corrupt on next boot. Relevant command runs and >>>> outputs: >>>> >>>> [root@archiso ~]# mount -osubvol=.,ro,recovery /dev/mapper/rootvol_1 mnt >>>> mount: wrong fs type, bad option, bad superblock on >>>> /dev/mapper/rootvol_1, >>>> missing codepage or helper program, or other error >>>> >>>> In some cases useful info is found in syslog - try >>>> dmesg | tail or so. >>>> [ 372.665800] Btrfs loaded >>>> [ 372.666481] BTRFS: device fsid 91f7e058-1142-4036-b1f7-4f64163dc8ae >>>> devid 1 transid 257371 /dev/dm-4 >>>> [ 389.339860] BTRFS: device fsid 91f7e058-1142-4036-b1f7-4f64163dc8ae >>>> devid 2 transid 257371 /dev/dm-5 >>>> [ 781.695931] BTRFS info (device dm-5): enabling auto recovery >>>> [ 781.695933] BTRFS info (device dm-5): disk space caching is enabled >>>> [ 781.695934] BTRFS: has skinny extents >>>> [ 781.776198] BTRFS: bdev /dev/mapper/rootvol_2 errs: wr 0, rd 0, >>>> flush 0, corrupt 10, gen 426 >>>> [ 791.982552] BTRFS critical (device dm-5): corrupt leaf, bad key >>>> order: block=6210228551680,root=1, slot=49 >>>> [ 791.982836] BTRFS critical (device dm-5): corrupt leaf, bad key >>>> order: block=6210228551680,root=1, slot=49 >>>> [ 791.982862] BTRFS: Failed to read block groups: -5 >>>> [ 792.030513] BTRFS: open_ctree failed >>>> >>>> [root@archiso ~]# btrfs restore -D /dev/mapper/rootvol_1 >>>> /root/tmp_data | tee data_mnt/tom/restore_list.txt >>>> bad key ordering 49 50 >>>> Error searching -1 >>>> Error searching /root/tmp_data/home >>>> This is a dry-run, no files are going to be restored >>>> We have looped trying to restore files in >>>> /exherbo/root/squashfs-root/usr/bin too many times to be making >>>> progress, stopping >>>> We have looped trying to restore files in >>>> /exherbo/root/squashfs-root/usr/share/man/man1 too many times to be >>>> making progress, stopping >>>> We have looped trying to restore files in >>>> /exherbo/root/squashfs-root/usr/share/man/man3 too many times to be >>>> making progress, stopping >>>> We have looped trying to restore files in >>>> /exherbo/usr/x86_64-pc-linux-gnu/bin too many times to be making >>>> progress, stopping >>>> We have looped trying to restore files in >>>> /exherbo/usr/x86_64-pc-linux-gnu/include/firefox/mozilla/dom too many >>>> times to be making progress, stopping >>>> We have looped trying to restore files in >>>> /exherbo/usr/x86_64-pc-linux-gnu/include/firefox too many times to be >>>> making progress, stopping >>>> We have looped trying to restore files in >>>> /exherbo/usr/x86_64-pc-linux-gnu/lib/python3.5/test/__pycache__ too >>>> many times to be making progress, stopping >>>> We have looped trying to restore files in >>>> /exherbo/usr/x86_64-pc-linux-gnu/lib/python2.7/test too many times to >>>> be making progress, stopping >>>> We have looped trying to restore files in >>>> /exherbo/usr/x86_64-pc-linux-gnu/lib/debug/usr/x86_64-pc-linux-gnu/bin >>>> too many times to be making progress, stopping >>>> We have looped trying to restore files in /exherbo/usr/share/man/man3 >>>> too many times to be making progress, stopping >>>> We have looped trying to restore files in /exherbo/usr/share/man/man1 >>>> too many times to be making progress, stopping >>>> We have looped trying to restore files in >>>> /exherbo/usr/share/idl/firefox too many times to be making progress, >>>> stopping >>>> >>>> [root@archiso ~]# btrfs restore -v -l /dev/mapper/rootvol_1 >>>> bad key ordering 49 50 >>>> tree key (EXTENT_TREE ROOT_ITEM 0) 6210219163648 level 2 >>>> tree key (DEV_TREE ROOT_ITEM 0) 3792640000000 level 1 >>>> tree key (FS_TREE ROOT_ITEM 0) 3792595566592 level 0 >>>> tree key (CSUM_TREE ROOT_ITEM 0) 6210220048384 level 3 >>>> tree key (UUID_TREE ROOT_ITEM 0) 3792855105536 level 0 >>>> tree key (257 ROOT_ITEM 0) 3792551755776 level 2 >>>> tree key (258 ROOT_ITEM 0) 6210218557440 level 2 >>>> tree key (3785 ROOT_ITEM 0) 7588191682560 level 0 >>>> tree key (3786 ROOT_ITEM 0) 7588191633408 level 0 >>>> tree key (7565 ROOT_ITEM 0) 6210221588480 level 2 >>>> tree key (7566 ROOT_ITEM 0) 4055721377792 level 0 >>>> tree key (7567 ROOT_ITEM 101377) 3792849616896 level 2 >>>> tree key (DATA_RELOC_TREE ROOT_ITEM 0) 3792520544256 level 0 >>>> >>>> Any help available? I tried using btrfs-restore previously on a >>>> different machine with only one of the disks plugged in, and it at >>>> least showed some files, though the 'Error searching -1' still showed >>>> up. (The /home subvolume is the only one I really care about; >>>> everything else is nice-to-have.) >>>> >>>> -- >>>> Tom Hunt >>> >>> >>> >>> >> >> > > >