Sorry, forgot kernel and btrfs versions: root@tuxedo:~# uname -a Linux tuxedo.fkoop.de 5.0.0-27-generic #28-Ubuntu SMP Tue Aug 20 19:53:07 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux root@tuxedo:~# btrfs --version btrfs-progs v4.20.2
Mit freundlichen Grüßen/Kind regards Felix Koop > Felix Koop <f...@fkoop.de> hat am 24. September 2019 um 10:27 geschrieben: > > > Hi Qu, > > unfortunately nothing under dmesg. > > ~# btrfs ins dump-super -fFa /dev/md/1 > superblock: bytenr=65536, device=/dev/md/1 > --------------------------------------------------------- > csum_type 48250 (INVALID) > csum_size 32 > csum > 0x8e5542eb70bced2a96808253fcb7a73c6085b6e754cbc8e2fb89674e9f738238 [UNKNOWN > CSUM TYPE OR SIZE] > bytenr 12181234483651309775 > flags 0xd962ba5e4ef1695a > ( RELOC | > CHANGING_FSID | > METADUMP | > METADUMP_V2 | > unknown flag: 0xd962ba504ef16958 ) > magic .#7"f..0 [DON'T MATCH] > fsid a8da0ac7-579b-6d81-88cd-c933b794c785 > metadata_uuid 156aee46-b94c-b9ba-962c-b332ab4667cc > label > 0...=.a..Z.Y.`..T.l.H.f?....AAkv9.........ZB.M...........2..;!8.g...i..t..l.*.x!....].=......b.Q^D.. > generation 12986127113123940026 > root 13851558508265222271 > sys_array_size 1161401401 > chunk_root_generation 12667455870201283783 > root_level 5 > chunk_root 11926903618860088829 > chunk_root_level 64 > log_root 1841135978666913598 > log_root_transid 11002435440050228634 > log_root_level 248 > total_bytes 8158923876795838803 > bytes_used 17787222351354347041 > sectorsize 2669808347 > nodesize 4288500188 > leafsize (deprecated) 1806564735 > stripesize 4196907700 > root_dir 16118946364209963189 > num_devices 12936053495324799957 > compat_flags 0x426746ddc014497a > compat_ro_flags 0x1a387ee25cbe0480 > ( unknown flag: 0x1a387ee25cbe0480 ) > incompat_flags 0x6e87d5eadcdc0552 > ( DEFAULT_SUBVOL | > COMPRESS_ZSTD | > EXTENDED_IREF | > SKINNY_METADATA | > METADATA_UUID | > unknown flag: 0x6e87d5eadcdc0000 ) > cache_generation 10057603985414728634 > uuid_tree_generation 4068845440595781678 > dev_item.uuid 7b2ddb16-78c6-091d-d77f-37032bb24e6f > dev_item.fsid 9c1be2b7-3fe4-29db-b0a7-b18caf3d3f5a [DON'T MATCH] > dev_item.type 6604466414397713944 > dev_item.total_bytes 4621717855420266801 > dev_item.bytes_used 8342047778331657076 > dev_item.io_align 4279037902 > dev_item.io_width 1775887180 > dev_item.sector_size 2259074908 > dev_item.devid 18157633788844884947 > dev_item.dev_group 1667847581 > dev_item.seek_speed 63 > dev_item.bandwidth 207 > dev_item.generation 3594285136264646998 > sys_chunk_array[2048]: > ERROR: sys_array_size 1161401401 shouldn't exceed 2048 bytes > backup_roots[4]: > backup 0: > backup_tree_root: 6970368790324777925 gen: > 12598614702518465874 level: 78 > backup_chunk_root: 12185247256182217146 gen: > 8294830950963298816 level: 207 > backup_extent_root: 1288338481765642561 gen: > 9286345172685317925 level: 66 > backup_fs_root: 1024698212512227239 gen: > 7381800784347480503 level: 173 > backup_dev_root: 7291763814382499783 gen: > 16237858643413215931 level: 245 > backup_csum_root: 6458388087989564616 gen: > 8793163284351336981 level: 197 > backup_total_bytes: 9073274160022698418 > backup_bytes_used: 18251414241723294857 > backup_num_devices: 4518080734946755492 > > backup 1: > backup_tree_root: 8259739005406706376 gen: > 11190415651942675634 level: 248 > backup_chunk_root: 18248383521275344277 gen: > 8975374588041967785 level: 77 > backup_extent_root: 8904246775283008170 gen: > 10396757054042900315 level: 167 > backup_fs_root: 5396296792390782509 gen: > 4442630659605843819 level: 199 > backup_dev_root: 16699734435861110318 gen: > 15048997227385557306 level: 150 > backup_csum_root: 11341563417203940976 gen: > 10565796296655441867 level: 147 > backup_total_bytes: 14154396027034184437 > backup_bytes_used: 4527608919712333479 > backup_num_devices: 16180777334101189082 > > backup 2: > backup_tree_root: 7234681543498250474 gen: > 1426436775921748192 level: 22 > backup_chunk_root: 18299546316577055742 gen: > 8457029571622666206 level: 190 > backup_extent_root: 938095847490098596 gen: > 3561749671145080517 level: 110 > backup_fs_root: 16620609691604273391 gen: > 13316231509064955595 level: 116 > backup_dev_root: 6546605238984936919 gen: > 8637539137105119188 level: 30 > backup_csum_root: 4673665454181379707 gen: > 2591971300734134658 level: 114 > backup_total_bytes: 7209206266924999293 > backup_bytes_used: 16310899366805622086 > backup_num_devices: 14495759847441176014 > > backup 3: > backup_tree_root: 16070221463289531118 gen: > 12053826310892106180 level: 98 > backup_chunk_root: 4064898164871351729 gen: > 15139400542209185938 level: 79 > backup_extent_root: 12602461080827122942 gen: > 882859735452525139 level: 187 > backup_fs_root: 6147598603993586532 gen: > 17537062445806784871 level: 17 > backup_dev_root: 17321276347622146300 gen: > 3635482114765943339 level: 73 > backup_csum_root: 4762360560673113434 gen: > 10797920740240765554 level: 167 > backup_total_bytes: 14240312077713093305 > backup_bytes_used: 10068420544575204023 > backup_num_devices: 11928987221309933272 > > > superblock: bytenr=67108864, device=/dev/md/1 > --------------------------------------------------------- > csum_type 0 (crc32c) > csum_size 4 > csum 0x636f9da3 [match] > bytenr 67108864 > flags 0x1 > ( WRITTEN ) > magic _BHRfS_M [match] > fsid 6bd5c974-2565-4736-815d-fe071f560e68 > metadata_uuid 6bd5c974-2565-4736-815d-fe071f560e68 > label > generation 168 > root 340721664 > sys_array_size 129 > chunk_root_generation 156 > root_level 1 > chunk_root 22020096 > chunk_root_level 1 > log_root 0 > log_root_transid 0 > log_root_level 0 > total_bytes 375567417344 > bytes_used 243939692544 > sectorsize 4096 > nodesize 16384 > leafsize (deprecated) 16384 > stripesize 4096 > root_dir 6 > num_devices 1 > compat_flags 0x0 > compat_ro_flags 0x0 > incompat_flags 0x161 > ( MIXED_BACKREF | > BIG_METADATA | > EXTENDED_IREF | > SKINNY_METADATA ) > cache_generation 168 > uuid_tree_generation 168 > dev_item.uuid d71e03b8-b353-4242-a65a-dc9d60bc46a6 > dev_item.fsid 6bd5c974-2565-4736-815d-fe071f560e68 [match] > dev_item.type 0 > dev_item.total_bytes 375567417344 > dev_item.bytes_used 248059527168 > dev_item.io_align 4096 > dev_item.io_width 4096 > dev_item.sector_size 4096 > dev_item.devid 1 > dev_item.dev_group 0 > dev_item.seek_speed 0 > dev_item.bandwidth 0 > dev_item.generation 0 > sys_chunk_array[2048]: > item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 22020096) > length 8388608 owner 2 stripe_len 65536 type SYSTEM|DUP > io_align 65536 io_width 65536 sector_size 4096 > num_stripes 2 sub_stripes 0 > stripe 0 devid 1 offset 22020096 > dev_uuid d71e03b8-b353-4242-a65a-dc9d60bc46a6 > stripe 1 devid 1 offset 30408704 > dev_uuid d71e03b8-b353-4242-a65a-dc9d60bc46a6 > backup_roots[4]: > backup 0: > backup_tree_root: 350814208 gen: 166 > level: 1 > backup_chunk_root: 22020096 gen: 156 > level: 1 > backup_extent_root: 340721664 gen: 166 > level: 2 > backup_fs_root: 338608128 gen: 166 > level: 2 > backup_dev_root: 354140160 gen: 166 > level: 1 > backup_csum_root: 353402880 gen: 166 > level: 2 > backup_total_bytes: 375567417344 > backup_bytes_used: 243939692544 > backup_num_devices: 1 > > backup 1: > backup_tree_root: 57311232 gen: 167 > level: 1 > backup_chunk_root: 22020096 gen: 156 > level: 1 > backup_extent_root: 69419008 gen: 167 > level: 2 > backup_fs_root: 338608128 gen: 166 > level: 2 > backup_dev_root: 317472768 gen: 167 > level: 1 > backup_csum_root: 345784320 gen: 167 > level: 2 > backup_total_bytes: 375567417344 > backup_bytes_used: 243939692544 > backup_num_devices: 1 > > backup 2: > backup_tree_root: 340721664 gen: 168 > level: 1 > backup_chunk_root: 22020096 gen: 156 > level: 1 > backup_extent_root: 340738048 gen: 168 > level: 2 > backup_fs_root: 338608128 gen: 166 > level: 2 > backup_dev_root: 345358336 gen: 168 > level: 1 > backup_csum_root: 353320960 gen: 168 > level: 2 > backup_total_bytes: 375567417344 > backup_bytes_used: 243939692544 > backup_num_devices: 1 > > backup 3: > backup_tree_root: 57311232 gen: 165 > level: 1 > backup_chunk_root: 22020096 gen: 156 > level: 1 > backup_extent_root: 69419008 gen: 165 > level: 2 > backup_fs_root: 352387072 gen: 157 > level: 2 > backup_dev_root: 317325312 gen: 165 > level: 1 > backup_csum_root: 343932928 gen: 165 > level: 2 > backup_total_bytes: 375567417344 > backup_bytes_used: 243939692544 > backup_num_devices: 1 > > > superblock: bytenr=274877906944, device=/dev/md/1 > --------------------------------------------------------- > csum_type 0 (crc32c) > csum_size 4 > csum 0x9ee8cb92 [match] > bytenr 274877906944 > flags 0x1 > ( WRITTEN ) > magic _BHRfS_M [match] > fsid 6bd5c974-2565-4736-815d-fe071f560e68 > metadata_uuid 6bd5c974-2565-4736-815d-fe071f560e68 > label > generation 168 > root 340721664 > sys_array_size 129 > chunk_root_generation 156 > root_level 1 > chunk_root 22020096 > chunk_root_level 1 > log_root 0 > log_root_transid 0 > log_root_level 0 > total_bytes 375567417344 > bytes_used 243939692544 > sectorsize 4096 > nodesize 16384 > leafsize (deprecated) 16384 > stripesize 4096 > root_dir 6 > num_devices 1 > compat_flags 0x0 > compat_ro_flags 0x0 > incompat_flags 0x161 > ( MIXED_BACKREF | > BIG_METADATA | > EXTENDED_IREF | > SKINNY_METADATA ) > cache_generation 168 > uuid_tree_generation 168 > dev_item.uuid d71e03b8-b353-4242-a65a-dc9d60bc46a6 > dev_item.fsid 6bd5c974-2565-4736-815d-fe071f560e68 [match] > dev_item.type 0 > dev_item.total_bytes 375567417344 > dev_item.bytes_used 248059527168 > dev_item.io_align 4096 > dev_item.io_width 4096 > dev_item.sector_size 4096 > dev_item.devid 1 > dev_item.dev_group 0 > dev_item.seek_speed 0 > dev_item.bandwidth 0 > dev_item.generation 0 > sys_chunk_array[2048]: > item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 22020096) > length 8388608 owner 2 stripe_len 65536 type SYSTEM|DUP > io_align 65536 io_width 65536 sector_size 4096 > num_stripes 2 sub_stripes 0 > stripe 0 devid 1 offset 22020096 > dev_uuid d71e03b8-b353-4242-a65a-dc9d60bc46a6 > stripe 1 devid 1 offset 30408704 > dev_uuid d71e03b8-b353-4242-a65a-dc9d60bc46a6 > backup_roots[4]: > backup 0: > backup_tree_root: 350814208 gen: 166 > level: 1 > backup_chunk_root: 22020096 gen: 156 > level: 1 > backup_extent_root: 340721664 gen: 166 > level: 2 > backup_fs_root: 338608128 gen: 166 > level: 2 > backup_dev_root: 354140160 gen: 166 > level: 1 > backup_csum_root: 353402880 gen: 166 > level: 2 > backup_total_bytes: 375567417344 > backup_bytes_used: 243939692544 > backup_num_devices: 1 > > backup 1: > backup_tree_root: 57311232 gen: 167 > level: 1 > backup_chunk_root: 22020096 gen: 156 > level: 1 > backup_extent_root: 69419008 gen: 167 > level: 2 > backup_fs_root: 338608128 gen: 166 > level: 2 > backup_dev_root: 317472768 gen: 167 > level: 1 > backup_csum_root: 345784320 gen: 167 > level: 2 > backup_total_bytes: 375567417344 > backup_bytes_used: 243939692544 > backup_num_devices: 1 > > backup 2: > backup_tree_root: 340721664 gen: 168 > level: 1 > backup_chunk_root: 22020096 gen: 156 > level: 1 > backup_extent_root: 340738048 gen: 168 > level: 2 > backup_fs_root: 338608128 gen: 166 > level: 2 > backup_dev_root: 345358336 gen: 168 > level: 1 > backup_csum_root: 353320960 gen: 168 > level: 2 > backup_total_bytes: 375567417344 > backup_bytes_used: 243939692544 > backup_num_devices: 1 > > backup 3: > backup_tree_root: 57311232 gen: 165 > level: 1 > backup_chunk_root: 22020096 gen: 156 > level: 1 > backup_extent_root: 69419008 gen: 165 > level: 2 > backup_fs_root: 352387072 gen: 157 > level: 2 > backup_dev_root: 317325312 gen: 165 > level: 1 > backup_csum_root: 343932928 gen: 165 > level: 2 > backup_total_bytes: 375567417344 > backup_bytes_used: 243939692544 > backup_num_devices: 1 > > > > > > Mit freundlichen Grüßen/Kind regards > > > Felix Koop > > > > Qu Wenruo <quwenruo.bt...@gmx.com> hat am 22. September 2019 um 11:50 > > geschrieben: > > > > > > > > > > On 2019/9/22 下午2:34, Felix Koop wrote: > > > Hello, > > > > > > I need help accessing a btrfs-filesystem. When I try to mount the fs, I > > > get the following error: > > > > > > # mount -t btrfs /dev/md/1 /mnt > > > mount: /mnt: wrong fs type, bad option, bad superblock on /dev/md1, > > > missing codepage or helper program, or other error. > > > > dmesg please. > > > > > > > > When I then try to check the fs, this is what I get: > > > > > > # btrfs check /dev/md/1 > > > Opening filesystem to check... > > > No valid Btrfs found on /dev/md/1 > > > ERROR: cannot open file system > > > > As it said, it can't find the primary superblock. > > > > Please provide the following output. > > > > # btrfs ins dump-super -fFa /dev/md/1 > > > > And kernel and btrfs-progs version please. > > > > Thanks, > > Qu > > > > > > Can anybody help me how to recover my data? > > > > > > > >
