Also - here's 'btrfs inspect-internal dump-super /dev/sdc1':
superblock: bytenr=65536, device=/dev/sdc1
---------------------------------------------------------
csum_type 0 (crc32c)
csum_size 4
csum 0x4331039b [match]
bytenr 65536
flags 0x1
( WRITTEN )
magic _BHRfS_M [match]
fsid 53749823-faaf-46f9-866d-3778d93cb1ca
label btrfs1
generation 49750
root 229846646784
sys_array_size 129
chunk_root_generation 49725
root_level 1
chunk_root 2568857059328
chunk_root_level 1
log_root 0
log_root_transid 0
log_root_level 0
total_bytes 9001775738880
bytes_used 2085801975808
sectorsize 4096
nodesize 16384
leafsize (deprecated) 16384
stripesize 4096
root_dir 6
num_devices 3
compat_flags 0x0
compat_ro_flags 0x0
incompat_flags 0x361
( MIXED_BACKREF |
BIG_METADATA |
EXTENDED_IREF |
SKINNY_METADATA |
NO_HOLES )
cache_generation 49748
uuid_tree_generation 49748
dev_item.uuid 7338a973-9a45-4032-a4c9-d18142fd7908
dev_item.fsid 53749823-faaf-46f9-866d-3778d93cb1ca [match]
dev_item.type 0
dev_item.total_bytes 3000591912960
dev_item.bytes_used 1407675531264
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
Although, 'btrfs inspect-internal logical-resolve ...' just says:
# btrfs inspect-internal logical-resolve 229846466560 /dev/sdc1
ERROR: not a btrfs filesystem: /dev/sdc1
On 08/15/2019 10:35 +0800, Qu Wenruo wrote:
>>
>>
>> On 2019/8/15 ??????2:32, Tim Walberg wrote:
>> > Most of the recommendations I've found online deal with when "wanted" is
>> > greater than "found", which, if I understand correctly means that one or
>> > more transactions were interrupted/lost before fully committed.
>>
>> No matter what the case is, a proper transaction shouldn't have any tree
>> block overwritten.
>>
>> That means, either the FLUSH/FUA of the hardware/lower block layer is
>> screwed up, or the COW of tree block is already screwed up.
>>
>> >
>> > Are the recommendations for recovery the same if the system is reporting a
>> > "wanted" that is less than "found"?
>> >
>> The salvage is no difference than any transid mismatch, no matter if
>> it's larger or smaller.
>>
>> It depends on the tree block.
>>
>> Please provide full dmesg output and btrfs check for further advice.
>>
>> Thanks,
>> Qu
>>
End of included message
--
+----------------------+
| Tim Walberg |
| 830 Carriage Dr. |
| Algonquin, IL 60102 |
| twalberg@xxxxxxxxxxx |
+----------------------+
