BTRFS /@/ with home as subvolume results in Firefox cache entries corrupt leaf that in turn prevents rw mounting. Using OpenSuse Leap 42.3 BTRFS Standard Repair Tools are unsuccessful to fix what seems a small localised error to a non critical directory. I could not find any BTRFS type tool to remove just that directory without the volume mounted rw. And there is the catch 22 of not being able to mount it ro while the "corrupt leaf" error occurs. Initially btrfs rescue zero-log gave rw access. I could not delete the "entries" directory associated with the Firefox cache "entries" directory. I was permitted to rename it so I renamed "entries" as "broken-inode-455338" The system shortly thereafter set itself again to ro. Since then rw mount is not possible. There was a brown out power problem here I suspect could have been the initial catalyst in conjunction with a propensity for Firefox cache entries to BTRFS corruption. The steps at https://lists.opensuse.org/opensuse/2017-02/msg00930.html were attempted to repair the system. There Richard Brown said "can we please bury the nonsense that btrfs is lacking when it comes to repair and recovery tools" I say hell no! As a user there seems to be a lack of granular ability to remove corrupt entries. There also seems to be no way of denying a subvolume (eg: in this case "home") from consideration when mounting the main volume. Or to remove a subvolume from the main volume. If there was, I could remove the "home" subvolume and recreate just that. So in this example it seems a very small and trivial error of a cache dir trashes the entire btrfs subvolume. What suggestions exist to prevent such problems occuring again other than separating out all subvolumes onto separate partitions or LVM's? And are there any tools available to manually repair a problem like I am experiencing with "entries" dir. Thankyou Relevant logs and settings are below: LOGS: --------------------------------- # Note: block 537133056 inode 455338 is the entries dir of the cache directories for firefox /home/USER/.cache/mozilla/firefox/PROFILENAME/cache2/entries # I was unable to delete the broken dir, but managed to rename ./entries to ./broken-inode-455338 and to create a new empty ./entries dir # Then was able to initiate scrub etc # But it later failed again that day. There was no way I could ascertain to remove the broken inode. # Mounted ro, the ./broken-inode-455338 dir can be opened but appears empty # It becomes problematic seemingly only when volume is mounted rw --------------------------------- localhost:/ # mount -t btrfs -o ro UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /mnt/sda7 --------------------------------- localhost:/ # uname -a Linux localhost.localdomain 4.18.13-1-default #1 SMP PREEMPT Wed Oct 10 18:47:28 UTC 2018 (c434d5c) x86_64 x86_64 x86_64 GNU/Linux --------------------------------- localhost:/ # btrfs --version btrfs-progs v4.17.1 --------------------------------- localhost:/ # btrfs fi show Label: 'pt_osa1' uuid: 133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 Total devices 2 FS bytes used 30.23GiB devid 1 size 97.66GiB used 39.03GiB path /dev/sda7 devid 2 size 97.66GiB used 39.03GiB path /dev/sdb7 --------------------------------- localhost:/ # btrfs fi df /mnt/sda7 Data, RAID1: total=37.00GiB, used=29.46GiB System, RAID1: total=32.00MiB, used=16.00KiB Metadata, RAID1: total=2.00GiB, used=787.94MiB GlobalReserve, single: total=82.91MiB, used=0.00B --------------------------------- localhost:/ # mount -t btrfs -o ro UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /mnt/sda7 [Thu Dec 20 02:29:52 2018] BTRFS info (device sda7): disk space caching is enabled [Thu Dec 20 02:29:52 2018] BTRFS info (device sda7): has skinny extents [Thu Dec 20 02:35:12 2018] BTRFS info (device sda7): disk space caching is enabled [Thu Dec 20 02:35:12 2018] BTRFS info (device sda7): has skinny extents --------------------------------- # Note: Mounting ro as above works without any error. Attempts to mount rw fails... localhost:/ # mount -t btrfs -o rw UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /mnt/sda7 mount: /mnt/sda7: wrong fs type, bad option, bad superblock on /dev/sda7, missing codepage or helper program, or other error. [Thu Dec 20 02:36:06 2018] BTRFS info (device sda7): disk space caching is enabled [Thu Dec 20 02:36:06 2018] BTRFS info (device sda7): has skinny extents [Thu Dec 20 02:36:25 2018] BTRFS critical (device sda7): corrupt leaf: root=263 block=537133056 slot=98 ino=455338, name hash mismatch with key, have 0x000000007dd7ffcb expect 0x00000000dfc274ff [Thu Dec 20 02:36:25 2018] BTRFS: error (device sda7) in merge_reloc_roots:2466: errno=-5 IO failure [Thu Dec 20 02:36:25 2018] BTRFS warning (device sda7): failed to recover relocation: -30 [Thu Dec 20 02:36:25 2018] BTRFS error (device sda7): cleaner transaction attach returned -30 [Thu Dec 20 02:36:25 2018] BTRFS error (device sda7): open_ctree failed --------------------------------- # Immediately after failing rw mount, attempts to mount ro results in no errors recorded... mount -t btrfs -o subvol=@/home,ro UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /mnt/sda7/home [Thu Dec 20 02:46:36 2018] BTRFS info (device sda7): disk space caching is enabled [Thu Dec 20 02:46:36 2018] BTRFS info (device sda7): has skinny extents --------------------------------- # Note: block 537133056 inode 455338 is the entries dir of the cache directories for firefox /home/USER/.cache/mozilla/firefox/PROFILENAME/cache2/entries btrfs inspect-internal dump-tree -b 537133056 /dev/sda7 btrfs-progs v4.17.1 leaf 537133056 items 107 free space 6118 generation 40120 owner 263 leaf 537133056 flags 0x1(WRITTEN) backref revision 1 fs uuid 133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 chunk uuid 4cab7492-6459-4bda-8703-dcc6a81e622b item 0 key (455338 DIR_ITEM 3540219901) itemoff 16213 itemsize 70 location key (703987 INODE_ITEM 0) type FILE transid 38014 data_len 0 name_len 40 name: 26F2BD5CBF294474EFDC521833782B585603C132 item 1 key (455338 DIR_ITEM 3543270328) itemoff 16143 itemsize 70 location key (672675 INODE_ITEM 0) type FILE transid 36034 data_len 0 name_len 40 name: 916D2EF147007C80F33481F0A09AD58A888F8298 item 2 key (455338 DIR_ITEM 3544258744) itemoff 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7EF6235586E1FEE458EF2C3560F690ACF00D64A3 item 83 key (455338 DIR_ITEM 3709878314) itemoff 10403 itemsize 70 location key (748270 INODE_ITEM 0) type FILE transid 40120 data_len 0 name_len 40 name: 5CCACDD44241E3EBEEA33570219B0F19F91D10CC item 84 key (455338 DIR_ITEM 3711939545) itemoff 10333 itemsize 70 location key (718030 INODE_ITEM 0) type FILE transid 38973 data_len 0 name_len 40 name: 55BFCF28726B22E68AAF2C393B4CF5D2DF8397E2 item 85 key (455338 DIR_ITEM 3714383304) itemoff 10263 itemsize 70 location key (708140 INODE_ITEM 0) type FILE transid 38357 data_len 0 name_len 40 name: 50CD01B20F1AFEDC318FEB46A467557A2878B9CC item 86 key (455338 DIR_ITEM 3717994042) itemoff 10193 itemsize 70 location key (722031 INODE_ITEM 0) type FILE transid 39119 data_len 0 name_len 40 name: C6C8588E91B54622066E8462DA69681505C0EF32 item 87 key (455338 DIR_ITEM 3720066625) itemoff 10123 itemsize 70 location key (721870 INODE_ITEM 0) type FILE transid 39119 data_len 0 name_len 40 name: 7ED965594B3BF9BA68AAB6EAE62490E28B9A7277 item 88 key (455338 DIR_ITEM 3720757208) itemoff 10053 itemsize 70 location key (740718 INODE_ITEM 0) type FILE transid 39757 data_len 0 name_len 40 name: 067B3AA0A501EC22CC7E87D4AEFDD5F6C140C938 item 89 key (455338 DIR_ITEM 3721224365) itemoff 9983 itemsize 70 location key (736920 INODE_ITEM 0) type FILE transid 39651 data_len 0 name_len 40 name: EC355701D5BAF931F6D0D3F1F4B64891227BFBDE item 90 key (455338 DIR_ITEM 3728042486) itemoff 9913 itemsize 70 location key (691232 INODE_ITEM 0) type FILE transid 37527 data_len 0 name_len 40 name: 2430E27DEC60EEDD6B26F9BBD890B03097AE141D item 91 key (455338 DIR_ITEM 3728903590) itemoff 9843 itemsize 70 location key (747885 INODE_ITEM 0) type FILE transid 40082 data_len 0 name_len 40 name: 898EA51F7C37A05B570675AD499423BF2D1BC6D0 item 92 key (455338 DIR_ITEM 3734264028) itemoff 9773 itemsize 70 location key (722185 INODE_ITEM 0) type FILE transid 39120 data_len 0 name_len 40 name: 24469A256D4FE3814D33B6975D49E3A28EF16EC9 item 93 key (455338 DIR_ITEM 3738964685) itemoff 9703 itemsize 70 location key (685067 INODE_ITEM 0) type FILE transid 36975 data_len 0 name_len 40 name: 044D06846635A0CF7C9E32ABD4AFE5EEDAFDB5CD item 94 key (455338 DIR_ITEM 3748117366) itemoff 9633 itemsize 70 location key (692538 INODE_ITEM 0) type FILE transid 37622 data_len 0 name_len 40 name: 860CBC7964C9F41AAB9A0BFDAA57DBCB01163779 item 95 key (455338 DIR_ITEM 3749145932) itemoff 9563 itemsize 70 location key (728144 INODE_ITEM 0) type FILE transid 39404 data_len 0 name_len 40 name: 5E3F61D6678EDD6BBDBD9F16E5871D825357F695 item 96 key (455338 DIR_ITEM 3750982353) itemoff 9493 itemsize 70 location key (721315 INODE_ITEM 0) type FILE transid 39117 data_len 0 name_len 40 name: FCE0F0D3C3A3D1DF147BCC410EC03235BECF877E item 97 key (455338 DIR_ITEM 3751215179) itemoff 9423 itemsize 70 location key (675576 INODE_ITEM 0) type FILE transid 36353 data_len 0 name_len 40 name: 79606EABD028C5A6DFC0AA2F60B06EB61FFF5CDA item 98 key (455338 DIR_ITEM 3754063103) itemoff 9353 itemsize 70 location key (463979 INODE_ITEM 0) type FILE transid 25552 data_len 0 name_len 40 name: 648C5FC8D5C2BB828ED86E44DD9E5FB3A6430332 item 99 key (455338 DIR_ITEM 3759476008) itemoff 9283 itemsize 70 location key (695411 INODE_ITEM 0) type FILE transid 37702 data_len 0 name_len 40 name: EA0D80B3AC2EB5A79D44A9E36279688B4F4F4571 item 100 key (455338 DIR_ITEM 3760671333) itemoff 9213 itemsize 70 location key (742035 INODE_ITEM 0) type FILE transid 39862 data_len 0 name_len 40 name: 3ACDD6CB0A6CB9AA9C9D9F6EA2AA3339963B7A9C item 101 key (455338 DIR_ITEM 3769483178) itemoff 9143 itemsize 70 location key (570869 INODE_ITEM 0) type FILE transid 30187 data_len 0 name_len 40 name: 85A9CF3B7F369C806A0D8768216748C516DD0844 item 102 key (455338 DIR_ITEM 3770386312) itemoff 9073 itemsize 70 location key (463983 INODE_ITEM 0) type FILE transid 25552 data_len 0 name_len 40 name: 088AFB851C028D9E256D0B7C68348F277FC77557 item 103 key (455338 DIR_ITEM 3770577855) itemoff 9003 itemsize 70 location key (746148 INODE_ITEM 0) type FILE transid 39955 data_len 0 name_len 40 name: 02D103922E00747EE0CA600BAB1DBB820E19945F item 104 key (455338 DIR_ITEM 3774765965) itemoff 8933 itemsize 70 location key (728088 INODE_ITEM 0) type FILE transid 39396 data_len 0 name_len 40 name: 9DCEAF9793EA0EF13D1967FDD3CDCA1DE361106F item 105 key (455338 DIR_ITEM 3776729019) itemoff 8863 itemsize 70 location key (699983 INODE_ITEM 0) type FILE transid 37906 data_len 0 name_len 40 name: A48EC9DA3C204DF9C124C10C231D1D478BFB6BFA item 106 key (455338 DIR_ITEM 3781356904) itemoff 8793 itemsize 70 location key (610716 INODE_ITEM 0) type FILE transid 32073 data_len 0 name_len 40 name: 8B37E9EF2812C5B70E7B0FF7EBCB317B4323BD8A --------------------------------- localhost:/ # btrfs inspect-internal dump-super /dev/sda7 superblock: bytenr=65536, device=/dev/sda7 --------------------------------------------------------- csum_type 0 (crc32c) csum_size 4 csum 0x9c238f67 [match] bytenr 65536 flags 0x1 ( WRITTEN ) magic _BHRfS_M [match] fsid 133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 label pt_osa1 generation 429428 root 31473664 sys_array_size 129 chunk_root_generation 429386 root_level 1 chunk_root 154484604928 chunk_root_level 0 log_root 0 log_root_transid 0 log_root_level 0 total_bytes 209715200000 bytes_used 32460804096 sectorsize 4096 nodesize 16384 leafsize (deprecated) 16384 stripesize 4096 root_dir 6 num_devices 2 compat_flags 0x0 compat_ro_flags 0x0 incompat_flags 0x17b ( MIXED_BACKREF | DEFAULT_SUBVOL | COMPRESS_LZO | COMPRESS_ZSTD | BIG_METADATA | EXTENDED_IREF | SKINNY_METADATA ) cache_generation 429428 uuid_tree_generation 363 dev_item.uuid f8bfb24e-353d-43fa-8d37-c2f61d966f32 dev_item.fsid 133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 [match] dev_item.type 0 dev_item.total_bytes 104857600000 dev_item.bytes_used 41909485568 dev_item.io_align 0 dev_item.io_width 0 dev_item.sector_size 0 dev_item.devid 1 dev_item.dev_group 0 dev_item.seek_speed 0 dev_item.bandwidth 0 dev_item.generation 0 --------------------------------- localhost:/ # mount | grep '/mnt/sda7'; blkid | grep '133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5'; btrfs inspect-internal inode-resolve 455338 /mnt/sda7 /dev/sda7 on /mnt/sda7 type btrfs (ro,relatime,space_cache,subvolid=260,subvol=/@/.snapshots/1/snapshot) /dev/sda7: LABEL="pt_osa1" UUID="133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5" UUID_SUB="f8bfb24e-353d-43fa-8d37-c2f61d966f32" TYPE="btrfs" PTTYPE="dos" PARTLABEL="pt_osa1" PARTUUID="738e830b-3c58-4ce2-97f4-8e7503b92dce" /dev/sdb7: LABEL="pt_osa1" UUID="133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5" UUID_SUB="a11e8a7a-5fd2-4f9b-a9cc-b051b211bcbb" TYPE="btrfs" PTTYPE="dos" PARTLABEL="pt_osb1" PARTUUID="738e830b-3c58-4ce2-97f4-8e7503b92dce" ERROR: ino paths ioctl: No such file or directory --------------------------------- localhost:/ # btrfs su li /mnt/sda7 ID 258 gen 253 top level 5 path @ ID 259 gen 428546 top level 258 path @/.snapshots ID 260 gen 428625 top level 259 path @/.snapshots/1/snapshot ID 263 gen 429383 top level 258 path @/home ID 264 gen 429288 top level 258 path @/opt ID 265 gen 11660 top level 258 path @/srv ID 266 gen 429332 top level 258 path @/tmp ID 267 gen 429177 top level 258 path @/usr/local ID 268 gen 429365 top level 258 path @/var ID 269 gen 427718 top level 258 path @/root ID 307 gen 24177 top level 259 path @/.snapshots/6/snapshot ID 308 gen 24177 top level 259 path @/.snapshots/7/snapshot ID 309 gen 24177 top level 259 path @/.snapshots/8/snapshot ID 311 gen 24177 top level 259 path @/.snapshots/9/snapshot ID 320 gen 24220 top level 259 path @/.snapshots/16/snapshot ID 321 gen 24220 top level 259 path @/.snapshots/17/snapshot ID 330 gen 27036 top level 259 path @/.snapshots/24/snapshot ID 331 gen 27077 top level 259 path @/.snapshots/25/snapshot ID 353 gen 73635 top level 259 path @/.snapshots/46/snapshot ID 354 gen 73635 top level 259 path @/.snapshots/47/snapshot ID 355 gen 73635 top level 259 path @/.snapshots/48/snapshot ID 356 gen 73635 top level 259 path @/.snapshots/49/snapshot ID 358 gen 176335 top level 259 path @/.snapshots/50/snapshot ID 359 gen 176335 top level 259 path @/.snapshots/51/snapshot ID 361 gen 176335 top level 259 path @/.snapshots/52/snapshot ID 362 gen 176335 top level 259 path @/.snapshots/53/snapshot ID 363 gen 176335 top level 259 path @/.snapshots/54/snapshot ID 364 gen 176335 top level 259 path @/.snapshots/55/snapshot --------------------------------- #cat /etc/fstab UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 / btrfs compress=lzo,rw,noatime 0 0 UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /.snapshots btrfs subvol=@/.snapshots,compress=lzo 0 0 #UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /boot btrfs subvol=@/boot,rw,noatime 0 0 #UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /boot/grub2/i386-pc btrfs subvol=@/boot/grub2/i386-pc,rw,noatime 0 0 #UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /boot/grub2/x86_64-efi btrfs subvol=@/boot/grub2/x86_64-efi,rw,noatime 0 0 UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /home btrfs subvol=@/home,compress=lzo,rw,noatime 0 0 UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /opt btrfs subvol=@/opt,compress=lzo,rw,noatime 0 0 UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /root btrfs subvol=@/root,compress=lzo,rw,noatime 0 0 UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /srv btrfs subvol=@/srv,compress=lzo,rw,noatime 0 0 UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /tmp btrfs subvol=@/tmp,compress=lzo,rw,noatime 0 0 UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /usr/local btrfs subvol=@/usr/local,compress=lzo,rw,noatime 0 0 UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /var btrfs subvol=@/var,compress=lzo,rw,noatime 0 0 UUID=9471d962-1890-4624-9d89-2356bd5f0269 swap swap defaults 0 0 -----------------------------------
#btrfs check --readonly /dev/sda7 2>&1 | tee /mnt/archive01/--RepairBTRFS/btrfs-check-sda7-20181221.txt [1/7] checking root items [2/7] checking extents [3/7] checking free space cache [4/7] checking fs roots ERROR: DIR_ITEM[455338 3754063103] name 648C5FC8D5C2BB828ED86E44DD9E5FB3A643033276b6353640.first-shutdown.jsonlz4D19A0BCFCB.20181103140737858.wpsnda%202%20Questions%20Answered%20Lavaughn%20being%20a%20Nazi%20SS_20181029_1033.html0actor_20180213_20181028.html-25-17-.png=907-24%2011-57-47%7D.html namelen 40 filetype 1 mismatch with its hash, wanted 3754063103 have 2111307723 root 263 inode 455338 errors 10, odd dir item unresolved ref dir 455338 index 0 namelen 40 name 648C5FC8D5C2BB828ED86E44DD9E5FB3A6430332 filetype 1 errors 6, no dir index, no inode ref unresolved ref dir 455338 index 5857 namelen 40 name 648C5FC8D5C2CB828ED86E44DD9E5FB3A6430332 filetype 1 errors 1, no dir item relocroot 263 inode 455338 errors 10, odd dir item unresolved ref dir 455338 index 0 namelen 40 name 648C5FC8D5C2BB828ED86E44DD9E5FB3A6430332 filetype 1 errors 6, no dir index, no inode ref unresolved ref dir 455338 index 5857 namelen 40 name 648C5FC8D5C2CB828ED86E44DD9E5FB3A6430332 filetype 1 errors 1, no dir item ERROR: errors found in fs roots Opening filesystem to check... Checking filesystem on /dev/sda7 UUID: 133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 found 32460804096 bytes used, error(s) found total csum bytes: 28059520 total tree bytes: 826228736 total fs tree bytes: 739164160 total extent tree bytes: 48562176 btree space waste bytes: 171226092 file data blocks allocated: 41388740608 referenced 47772729344 -----------------------------------
(In reply to Jesse from comment #1) > #btrfs check --readonly /dev/sda7 2>&1 | tee > /mnt/archive01/--RepairBTRFS/btrfs-check-sda7-20181221.txt > [1/7] checking root items > [2/7] checking extents > [3/7] checking free space cache > [4/7] checking fs roots > ERROR: DIR_ITEM[455338 3754063103] name > 648C5FC8D5C2BB828ED86E44DD9E5FB3A643033276b6353640.first-shutdown. > jsonlz4D19A0BCFCB.20181103140737858. > wpsnda%202%20Questions%20Answered%20Lavaughn%20being%20a%20Nazi%20SS_20181029 > _1033.html0actor_20180213_20181028.html-25-17-.png=907-24%2011-57-47%7D.html > namelen 40 filetype 1 mismatch with its hash, wanted 3754063103 have > 2111307723 > root 263 inode 455338 errors 10, odd dir item > unresolved ref dir 455338 index 0 namelen 40 name > 648C5FC8D5C2BB828ED86E44DD9E5FB3A6430332 filetype 1 errors 6, no dir index, > no inode ref > unresolved ref dir 455338 index 5857 namelen 40 name > 648C5FC8D5C2CB828ED86E44DD9E5FB3A6430332 filetype 1 errors 1, no dir item > relocroot 263 inode 455338 errors 10, odd dir item > unresolved ref dir 455338 index 0 namelen 40 name > 648C5FC8D5C2BB828ED86E44DD9E5FB3A6430332 filetype 1 errors 6, no dir index, > no inode ref > unresolved ref dir 455338 index 5857 namelen 40 name > 648C5FC8D5C2CB828ED86E44DD9E5FB3A6430332 filetype 1 errors 1, no dir item > ERROR: errors found in fs roots > Opening filesystem to check... > Checking filesystem on /dev/sda7 > UUID: 133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 > found 32460804096 bytes used, error(s) found > total csum bytes: 28059520 > total tree bytes: 826228736 > total fs tree bytes: 739164160 > total extent tree bytes: 48562176 > btree space waste bytes: 171226092 > file data blocks allocated: 41388740608 > referenced 47772729344 > ----------------------------------- And the following repair tools make no difference: ----------------------------------- localhost:/home/linux # mount -t btrfs -o subvol=@/home,rw,usebackuproot UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /mnt/sda7-home mount: /mnt/sda7-home: wrong fs type, bad option, bad superblock on /dev/sdb7, missing codepage or helper program, or other error. [Sat Dec 22 12:20:36 2018] BTRFS info (device sda7): trying to use backup root at mount time [Sat Dec 22 12:20:36 2018] BTRFS info (device sda7): disk space caching is enabled [Sat Dec 22 12:20:36 2018] BTRFS info (device sda7): has skinny extents [Sat Dec 22 12:20:55 2018] BTRFS critical (device sda7): corrupt leaf: root=263 block=537133056 slot=98 ino=455338, name hash mismatch with key, have 0x000000007dd7ffcb expect 0x00000000dfc274ff [Sat Dec 22 12:20:55 2018] BTRFS critical (device sda7): corrupt leaf: root=263 block=537133056 slot=98 ino=455338, name hash mismatch with key, have 0x000000007dd7ffcb expect 0x00000000dfc274ff [Sat Dec 22 12:20:55 2018] BTRFS: error (device sda7) in merge_reloc_roots:2425: errno=-5 IO failure [Sat Dec 22 12:20:55 2018] BTRFS warning (device sda7): failed to recover relocation: -30 [Sat Dec 22 12:20:55 2018] BTRFS error (device sda7): cleaner transaction attach returned -30 [Sat Dec 22 12:20:55 2018] BTRFS error (device sda7): open_ctree failed ----------------------------------- localhost:/home/linux # mount -t btrfs -o subvol=@,rw,usebackuproot UUID=133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 /mnt/sda7 mount: /mnt/sda7: wrong fs type, bad option, bad superblock on /dev/sdb7, missing codepage or helper program, or other error [Sat Dec 22 12:22:11 2018] BTRFS info (device sda7): trying to use backup root at mount time [Sat Dec 22 12:22:11 2018] BTRFS info (device sda7): disk space caching is enabled [Sat Dec 22 12:22:11 2018] BTRFS info (device sda7): has skinny extents [Sat Dec 22 12:22:29 2018] BTRFS critical (device sda7): corrupt leaf: root=263 block=537133056 slot=98 ino=455338, name hash mismatch with key, have 0x000000007dd7ffcb expect 0x00000000dfc274ff [Sat Dec 22 12:22:29 2018] BTRFS critical (device sda7): corrupt leaf: root=263 block=537133056 slot=98 ino=455338, name hash mismatch with key, have 0x000000007dd7ffcb expect 0x00000000dfc274ff [Sat Dec 22 12:22:29 2018] BTRFS: error (device sda7) in merge_reloc_roots:2425: errno=-5 IO failure [Sat Dec 22 12:22:29 2018] BTRFS warning (device sda7): failed to recover relocation: -30 [Sat Dec 22 12:22:29 2018] BTRFS error (device sda7): cleaner transaction attach returned -30 [Sat Dec 22 12:22:29 2018] BTRFS error (device sda7): open_ctree failed ----------------------------------- localhost:/home/linux # btrfs rescue super-recover /dev/sda7 All supers are valid, no need to recover ----------------------------------- localhost:/home/linux # btrfs rescue zero-log /dev/sda7 Clearing log on /dev/sda7, previous log_root 0, level 0 localhost:/home/linux # btrfs rescue zero-log /dev/sdb7 Clearing log on /dev/sdb7, previous log_root 0, level 0 ----------------------------------- localhost:/home/linux # btrfs rescue chunk-recover /dev/sda7 Scanning: DONE in dev0, DONE in dev1 We are going to rebuild the chunk tree on disk, it might destroy the old metadata on the disk, Are you sure? [y/N]: y Chunk tree recovered successfully ----------------------------------- localhost:/home/linux # btrfs check --repair /dev/sda7 2>&1 | tee /mnt/archive01/--RepairBTRFS/btrfs-check-sda7-repair-20181222.txt [1/7] checking root items Fixed 0 roots. [2/7] checking extents [3/7] checking free space cache [4/7] checking fs roots ERROR: DIR_ITEM[455338 3754063103] name 648C5FC8D5C2BB828ED86E44DD9E5FB3A643033276b6353640.first-shutdown.jsonlz4D19A0BCFCB.20181103140737858.wpsnda%202%20Questions%20Answered%20Lavaughn%20being%20a%20Nazi%20SS_20181029_1033.html0actor_20180213_20181028.html-25-17-.png=907-24%2011-57-47%7D.html namelen 40 filetype 1 mismatch with its hash, wanted 3754063103 have 2111307723 root 263 inode 455338 errors 10, odd dir item unresolved ref dir 455338 index 0 namelen 40 name 648C5FC8D5C2BB828ED86E44DD9E5FB3A6430332 filetype 1 errors 6, no dir index, no inode ref unresolved ref dir 455338 index 5857 namelen 40 name 648C5FC8D5C2CB828ED86E44DD9E5FB3A6430332 filetype 1 errors 1, no dir item relocroot 263 inode 455338 errors 10, odd dir item unresolved ref dir 455338 index 0 namelen 40 name 648C5FC8D5C2BB828ED86E44DD9E5FB3A6430332 filetype 1 errors 6, no dir index, no inode ref unresolved ref dir 455338 index 5857 namelen 40 name 648C5FC8D5C2CB828ED86E44DD9E5FB3A6430332 filetype 1 errors 1, no dir item ERROR: errors found in fs roots enabling repair mode Opening filesystem to check... Checking filesystem on /dev/sda7 UUID: 133e69bd-65d0-4af6-8a4b-5d2ddd6fefb5 No device size related problem found cache and super generation don't match, space cache will be invalidated found 32460181504 bytes used, error(s) found total csum bytes: 28059520 total tree bytes: 826392576 total fs tree bytes: 739328000 total extent tree bytes: 48562176 btree space waste bytes: 171278836 file data blocks allocated: 41415008256 referenced 47803871232 -----------------------------------
This is a semi-automated bugzilla cleanup, report is against an old kernel version. If the problem still happens, please open a new bug. Thanks.