superblock: bytenr=67108864, device=/dev/mapper/3tb_spinner
---------------------------------------------------------
csum_type		0 (crc32c)
csum_size		4
csum			0x076d5bba [match]
bytenr			67108864
flags			0x1
			( WRITTEN )
magic			_BHRfS_M [match]
fsid			8cf4bcd8-76c7-4494-a2c8-2578136c0aa6
metadata_uuid		00000000-0000-0000-0000-000000000000
label			
generation		123917
root			1871598567424
sys_array_size		129
chunk_root_generation	123187
root_level		0
chunk_root		28459008
chunk_root_level	1
log_root		0
log_root_transid (deprecated)	0
log_root_level		0
total_bytes		3000589352960
bytes_used		1951820050432
sectorsize		4096
nodesize		16384
leafsize (deprecated)	16384
stripesize		4096
root_dir		6
num_devices		1
compat_flags		0x0
compat_ro_flags		0xb
			( FREE_SPACE_TREE |
			  FREE_SPACE_TREE_VALID |
			  BLOCK_GROUP_TREE )
incompat_flags		0x371
			( MIXED_BACKREF |
			  COMPRESS_ZSTD |
			  BIG_METADATA |
			  EXTENDED_IREF |
			  SKINNY_METADATA |
			  NO_HOLES )
cache_generation	0
uuid_tree_generation	123887
dev_item.uuid		ba0038ab-68b2-4646-8f30-7d40dbd1b4ab
dev_item.fsid		8cf4bcd8-76c7-4494-a2c8-2578136c0aa6 [match]
dev_item.type		0
dev_item.total_bytes	3000589352960
dev_item.bytes_used	1981078831104
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 1
			stripe 0 devid 1 offset 22020096
			dev_uuid ba0038ab-68b2-4646-8f30-7d40dbd1b4ab
			stripe 1 devid 1 offset 30408704
			dev_uuid ba0038ab-68b2-4646-8f30-7d40dbd1b4ab
backup_roots[4]:
	backup 0:
		backup_tree_root:	1871598567424	gen: 123917	level: 0
		backup_chunk_root:	28459008	gen: 123187	level: 1
		backup_extent_root:	30507008	gen: 123917	level: 2
		backup_fs_root:		805961728	gen: 123887	level: 3
		backup_dev_root:	146063360	gen: 123884	level: 1
		csum_root:	806600704	gen: 123887	level: 2
		backup_total_bytes:	3000589352960
		backup_bytes_used:	1951820050432
		backup_num_devices:	1

	backup 1:
		backup_tree_root:	1871599681536	gen: 123914	level: 0
		backup_chunk_root:	28459008	gen: 123187	level: 1
		backup_extent_root:	30457856	gen: 123914	level: 2
		backup_fs_root:		805961728	gen: 123887	level: 3
		backup_dev_root:	146063360	gen: 123884	level: 1
		csum_root:	806600704	gen: 123887	level: 2
		backup_total_bytes:	3000589352960
		backup_bytes_used:	1951820050432
		backup_num_devices:	1

	backup 2:
		backup_tree_root:	1871600844800	gen: 123915	level: 0
		backup_chunk_root:	28459008	gen: 123187	level: 1
		backup_extent_root:	30507008	gen: 123915	level: 2
		backup_fs_root:		805961728	gen: 123887	level: 3
		backup_dev_root:	146063360	gen: 123884	level: 1
		csum_root:	806600704	gen: 123887	level: 2
		backup_total_bytes:	3000589352960
		backup_bytes_used:	1951820050432
		backup_num_devices:	1

	backup 3:
		backup_tree_root:	1871602515968	gen: 123916	level: 0
		backup_chunk_root:	28459008	gen: 123187	level: 1
		backup_extent_root:	30457856	gen: 123916	level: 2
		backup_fs_root:		805961728	gen: 123887	level: 3
		backup_dev_root:	146063360	gen: 123884	level: 1
		csum_root:	806600704	gen: 123887	level: 2
		backup_total_bytes:	3000589352960
		backup_bytes_used:	1951820050432
		backup_num_devices:	1