What do you get for:
btrfs rescue super -v <dev>
btrfs insp dump-s -fa <dev>
btrfs rescue super -v /dev/md42
All Devices:
Device: id = 1, name = /dev/md42
Before Recovering:
[All good supers]:
device name = /dev/md42
superblock bytenr = 65536
device name = /dev/md42
superblock bytenr = 67108864
device name = /dev/md42
superblock bytenr = 274877906944
[All bad supers]:
All supers are valid, no need to recover
btrfs insp dump-s -fa /dev/md42
attached as separate file, since it is a little bit lengthy.
But both commands give no errors.
btrfs check -b <dev> which will use the previous backup roots and see
if there's anything that can be done, or if it falls over with the
same complaint. It is possible to use your btrfs-find-tree results to
plug in specific root addresses using btrfs check -b <address> <dev>
working from the top of the list (the highest generation number) and
work down. But for starters just the first two commands above might
reveal a clue.
btrfs check -b /dev/md42
Opening filesystem to check...
parent transid verify failed on 448888832 wanted 68773 found 68768
parent transid verify failed on 448888832 wanted 68773 found 68768
parent transid verify failed on 448888832 wanted 68773 found 68771
parent transid verify failed on 448888832 wanted 68773 found 68771
Ignoring transid failure
leaf parent key incorrect 448888832
ERROR: cannot open file system
Yields the same as without -b.
btrfs check -b <address> <dev> isn't valid, I assume you mean btrfs
check -r <address> <dev>?
btrfs check /dev/md42
Opening filesystem to check...
parent transid verify failed on 448888832 wanted 68773 found 68768
parent transid verify failed on 448888832 wanted 68773 found 68768
parent transid verify failed on 448888832 wanted 68773 found 68771
parent transid verify failed on 448888832 wanted 68773 found 68771
Ignoring transid failure
leaf parent key incorrect 448888832
ERROR: cannot open file system
sudo btrfs check -r 629129216 /dev/md42
Opening filesystem to check...
parent transid verify failed on 448888832 wanted 68773 found 68768
parent transid verify failed on 448888832 wanted 68773 found 68768
parent transid verify failed on 448888832 wanted 68773 found 68771
parent transid verify failed on 448888832 wanted 68773 found 68771
Ignoring transid failure
leaf parent key incorrect 448888832
ERROR: cannot open file system
btrfs check -r 625803264 /dev/md42
Opening filesystem to check...
parent transid verify failed on 625803264 wanted 68921 found 68917
parent transid verify failed on 625803264 wanted 68921 found 68917
parent transid verify failed on 625803264 wanted 68921 found 68917
parent transid verify failed on 625803264 wanted 68921 found 68917
Ignoring transid failure
parent transid verify failed on 626180096 wanted 68917 found 68919
parent transid verify failed on 626180096 wanted 68917 found 68919
parent transid verify failed on 626180096 wanted 68917 found 68919
parent transid verify failed on 626180096 wanted 68917 found 68919
Ignoring transid failure
ERROR: child eb corrupted: parent bytenr=624934912 item=2 parent level=2
child level=0
ERROR: cannot open file system
btrfs check -r 602259456 /dev/md42
Opening filesystem to check...
parent transid verify failed on 602259456 wanted 68921 found 68899
parent transid verify failed on 602259456 wanted 68921 found 68899
parent transid verify failed on 602259456 wanted 68921 found 68899
parent transid verify failed on 602259456 wanted 68921 found 68899
Ignoring transid failure
parent transid verify failed on 604602368 wanted 68899 found 68901
parent transid verify failed on 604602368 wanted 68899 found 68901
parent transid verify failed on 604602368 wanted 68899 found 68901
parent transid verify failed on 604602368 wanted 68899 found 68901
Ignoring transid failure
ERROR: child eb corrupted: parent bytenr=601964544 item=2 parent level=2
child level=2
ERROR: cannot open file system
THis continues, didn't find a address that worked.
superblock: bytenr=65536, device=/dev/md42
---------------------------------------------------------
csum_type 0 (crc32c)
csum_size 4
csum 0x035e2cd4 [match]
bytenr 65536
flags 0x1
( WRITTEN )
magic _BHRfS_M [match]
fsid 8c6746f0-944a-45c5-90f3-622724d15998
label
generation 68921
root 629129216
sys_array_size 129
chunk_root_generation 68764
root_level 1
chunk_root 22052864
chunk_root_level 1
log_root 0
log_root_transid 0
log_root_level 0
total_bytes 7979827986432
bytes_used 1796020310016
sectorsize 4096
nodesize 16384
leafsize (deprecated) 16384
stripesize 4096
root_dir 6
num_devices 1
compat_flags 0x0
compat_ro_flags 0x0
incompat_flags 0x169
( MIXED_BACKREF |
COMPRESS_LZO |
BIG_METADATA |
EXTENDED_IREF |
SKINNY_METADATA )
cache_generation 68921
uuid_tree_generation 68921
dev_item.uuid 14a50874-e2ab-49ce-92bd-135d7adb6de9
dev_item.fsid 8c6746f0-944a-45c5-90f3-622724d15998 [match]
dev_item.type 0
dev_item.total_bytes 7979827986432
dev_item.bytes_used 2086305529856
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 14a50874-e2ab-49ce-92bd-135d7adb6de9
stripe 1 devid 1 offset 30408704
dev_uuid 14a50874-e2ab-49ce-92bd-135d7adb6de9
backup_roots[4]:
backup 0:
backup_tree_root: 631357440 gen: 68920 level: 1
backup_chunk_root: 22052864 gen: 68764 level: 1
backup_extent_root: 628768768 gen: 68920 level: 2
backup_fs_root: 30457856 gen: 6359 level: 0
backup_dev_root: 30474240 gen: 68764 level: 1
backup_csum_root: 629637120 gen: 68920 level: 2
backup_total_bytes: 7979827986432
backup_bytes_used: 1796020310016
backup_num_devices: 1
backup 1:
backup_tree_root: 629129216 gen: 68921 level: 1
backup_chunk_root: 22052864 gen: 68764 level: 1
backup_extent_root: 629473280 gen: 68921 level: 2
backup_fs_root: 30457856 gen: 6359 level: 0
backup_dev_root: 30474240 gen: 68764 level: 1
backup_csum_root: 631275520 gen: 68921 level: 2
backup_total_bytes: 7979827986432
backup_bytes_used: 1796020310016
backup_num_devices: 1
backup 2:
backup_tree_root: 628654080 gen: 68918 level: 1
backup_chunk_root: 22052864 gen: 68764 level: 1
backup_extent_root: 625639424 gen: 68918 level: 2
backup_fs_root: 30457856 gen: 6359 level: 0
backup_dev_root: 30474240 gen: 68764 level: 1
backup_csum_root: 625393664 gen: 68918 level: 2
backup_total_bytes: 7979827986432
backup_bytes_used: 1796018110464
backup_num_devices: 1
backup 3:
backup_tree_root: 632176640 gen: 68919 level: 1
backup_chunk_root: 22052864 gen: 68764 level: 1
backup_extent_root: 629129216 gen: 68919 level: 2
backup_fs_root: 30457856 gen: 6359 level: 0
backup_dev_root: 30474240 gen: 68764 level: 1
backup_csum_root: 631013376 gen: 68919 level: 2
backup_total_bytes: 7979827986432
backup_bytes_used: 1796020310016
backup_num_devices: 1
superblock: bytenr=67108864, device=/dev/md42
---------------------------------------------------------
csum_type 0 (crc32c)
csum_size 4
csum 0xa33f041a [match]
bytenr 67108864
flags 0x1
( WRITTEN )
magic _BHRfS_M [match]
fsid 8c6746f0-944a-45c5-90f3-622724d15998
label
generation 68921
root 629129216
sys_array_size 129
chunk_root_generation 68764
root_level 1
chunk_root 22052864
chunk_root_level 1
log_root 0
log_root_transid 0
log_root_level 0
total_bytes 7979827986432
bytes_used 1796020310016
sectorsize 4096
nodesize 16384
leafsize (deprecated) 16384
stripesize 4096
root_dir 6
num_devices 1
compat_flags 0x0
compat_ro_flags 0x0
incompat_flags 0x169
( MIXED_BACKREF |
COMPRESS_LZO |
BIG_METADATA |
EXTENDED_IREF |
SKINNY_METADATA )
cache_generation 68921
uuid_tree_generation 68921
dev_item.uuid 14a50874-e2ab-49ce-92bd-135d7adb6de9
dev_item.fsid 8c6746f0-944a-45c5-90f3-622724d15998 [match]
dev_item.type 0
dev_item.total_bytes 7979827986432
dev_item.bytes_used 2086305529856
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 14a50874-e2ab-49ce-92bd-135d7adb6de9
stripe 1 devid 1 offset 30408704
dev_uuid 14a50874-e2ab-49ce-92bd-135d7adb6de9
backup_roots[4]:
backup 0:
backup_tree_root: 631357440 gen: 68920 level: 1
backup_chunk_root: 22052864 gen: 68764 level: 1
backup_extent_root: 628768768 gen: 68920 level: 2
backup_fs_root: 30457856 gen: 6359 level: 0
backup_dev_root: 30474240 gen: 68764 level: 1
backup_csum_root: 629637120 gen: 68920 level: 2
backup_total_bytes: 7979827986432
backup_bytes_used: 1796020310016
backup_num_devices: 1
backup 1:
backup_tree_root: 629129216 gen: 68921 level: 1
backup_chunk_root: 22052864 gen: 68764 level: 1
backup_extent_root: 629473280 gen: 68921 level: 2
backup_fs_root: 30457856 gen: 6359 level: 0
backup_dev_root: 30474240 gen: 68764 level: 1
backup_csum_root: 631275520 gen: 68921 level: 2
backup_total_bytes: 7979827986432
backup_bytes_used: 1796020310016
backup_num_devices: 1
backup 2:
backup_tree_root: 628654080 gen: 68918 level: 1
backup_chunk_root: 22052864 gen: 68764 level: 1
backup_extent_root: 625639424 gen: 68918 level: 2
backup_fs_root: 30457856 gen: 6359 level: 0
backup_dev_root: 30474240 gen: 68764 level: 1
backup_csum_root: 625393664 gen: 68918 level: 2
backup_total_bytes: 7979827986432
backup_bytes_used: 1796018110464
backup_num_devices: 1
backup 3:
backup_tree_root: 632176640 gen: 68919 level: 1
backup_chunk_root: 22052864 gen: 68764 level: 1
backup_extent_root: 629129216 gen: 68919 level: 2
backup_fs_root: 30457856 gen: 6359 level: 0
backup_dev_root: 30474240 gen: 68764 level: 1
backup_csum_root: 631013376 gen: 68919 level: 2
backup_total_bytes: 7979827986432
backup_bytes_used: 1796020310016
backup_num_devices: 1
superblock: bytenr=274877906944, device=/dev/md42
---------------------------------------------------------
csum_type 0 (crc32c)
csum_size 4
csum 0x5eb8522b [match]
bytenr 274877906944
flags 0x1
( WRITTEN )
magic _BHRfS_M [match]
fsid 8c6746f0-944a-45c5-90f3-622724d15998
label
generation 68921
root 629129216
sys_array_size 129
chunk_root_generation 68764
root_level 1
chunk_root 22052864
chunk_root_level 1
log_root 0
log_root_transid 0
log_root_level 0
total_bytes 7979827986432
bytes_used 1796020310016
sectorsize 4096
nodesize 16384
leafsize (deprecated) 16384
stripesize 4096
root_dir 6
num_devices 1
compat_flags 0x0
compat_ro_flags 0x0
incompat_flags 0x169
( MIXED_BACKREF |
COMPRESS_LZO |
BIG_METADATA |
EXTENDED_IREF |
SKINNY_METADATA )
cache_generation 68921
uuid_tree_generation 68921
dev_item.uuid 14a50874-e2ab-49ce-92bd-135d7adb6de9
dev_item.fsid 8c6746f0-944a-45c5-90f3-622724d15998 [match]
dev_item.type 0
dev_item.total_bytes 7979827986432
dev_item.bytes_used 2086305529856
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 14a50874-e2ab-49ce-92bd-135d7adb6de9
stripe 1 devid 1 offset 30408704
dev_uuid 14a50874-e2ab-49ce-92bd-135d7adb6de9
backup_roots[4]:
backup 0:
backup_tree_root: 631357440 gen: 68920 level: 1
backup_chunk_root: 22052864 gen: 68764 level: 1
backup_extent_root: 628768768 gen: 68920 level: 2
backup_fs_root: 30457856 gen: 6359 level: 0
backup_dev_root: 30474240 gen: 68764 level: 1
backup_csum_root: 629637120 gen: 68920 level: 2
backup_total_bytes: 7979827986432
backup_bytes_used: 1796020310016
backup_num_devices: 1
backup 1:
backup_tree_root: 629129216 gen: 68921 level: 1
backup_chunk_root: 22052864 gen: 68764 level: 1
backup_extent_root: 629473280 gen: 68921 level: 2
backup_fs_root: 30457856 gen: 6359 level: 0
backup_dev_root: 30474240 gen: 68764 level: 1
backup_csum_root: 631275520 gen: 68921 level: 2
backup_total_bytes: 7979827986432
backup_bytes_used: 1796020310016
backup_num_devices: 1
backup 2:
backup_tree_root: 628654080 gen: 68918 level: 1
backup_chunk_root: 22052864 gen: 68764 level: 1
backup_extent_root: 625639424 gen: 68918 level: 2
backup_fs_root: 30457856 gen: 6359 level: 0
backup_dev_root: 30474240 gen: 68764 level: 1
backup_csum_root: 625393664 gen: 68918 level: 2
backup_total_bytes: 7979827986432
backup_bytes_used: 1796018110464
backup_num_devices: 1
backup 3:
backup_tree_root: 632176640 gen: 68919 level: 1
backup_chunk_root: 22052864 gen: 68764 level: 1
backup_extent_root: 629129216 gen: 68919 level: 2
backup_fs_root: 30457856 gen: 6359 level: 0
backup_dev_root: 30474240 gen: 68764 level: 1
backup_csum_root: 631013376 gen: 68919 level: 2
backup_total_bytes: 7979827986432
backup_bytes_used: 1796020310016
backup_num_devices: 1
