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- floyd@nas ~ $ sudo btrfs-show-super -i0 /dev/sdc
- superblock: bytenr=65536, device=/dev/sdc
- ---------------------------------------------------------
- csum 0x6c562d8b [match]
- bytenr 65536
- flags 0x1
- ( WRITTEN )
- magic _BHRfS_M [match]
- fsid cba641be-f5a2-444b-af88-359f7edae8aa
- label RAID
- generation 83438
- root 8789920350208
- sys_array_size 129
- chunk_root_generation 82188
- root_level 1
- chunk_root 8788035780608
- chunk_root_level 1
- log_root 0
- log_root_transid 0
- log_root_level 0
- total_bytes 9001778946048
- bytes_used 2727475957760
- sectorsize 4096
- nodesize 16384
- leafsize 16384
- stripesize 4096
- root_dir 6
- num_devices 3
- compat_flags 0x0
- compat_ro_flags 0x0
- incompat_flags 0x29
- ( MIXED_BACKREF |
- COMPRESS_LZO |
- BIG_METADATA )
- csum_type 0
- csum_size 4
- cache_generation 83438
- uuid_tree_generation 83438
- dev_item.uuid 184dcb12-1171-4036-9539-4ae5da796fb8
- dev_item.fsid cba641be-f5a2-444b-af88-359f7edae8aa [match]
- dev_item.type 0
- dev_item.total_bytes 3000592982016
- dev_item.bytes_used 2325724790784
- dev_item.io_align 4096
- dev_item.io_width 4096
- dev_item.sector_size 4096
- dev_item.devid 2
- dev_item.dev_group 0
- dev_item.seek_speed 0
- dev_item.bandwidth 0
- dev_item.generation 0
- floyd@nas ~ $ sudo btrfs-show-super -i1 /dev/sdc
- superblock: bytenr=67108864, device=/dev/sdc
- ---------------------------------------------------------
- csum 0xcc370545 [match]
- bytenr 67108864
- flags 0x1
- ( WRITTEN )
- magic _BHRfS_M [match]
- fsid cba641be-f5a2-444b-af88-359f7edae8aa
- label RAID
- generation 83438
- root 8789920350208
- sys_array_size 129
- chunk_root_generation 82188
- root_level 1
- chunk_root 8788035780608
- chunk_root_level 1
- log_root 0
- log_root_transid 0
- log_root_level 0
- total_bytes 9001778946048
- bytes_used 2727475957760
- sectorsize 4096
- nodesize 16384
- leafsize 16384
- stripesize 4096
- root_dir 6
- num_devices 3
- compat_flags 0x0
- compat_ro_flags 0x0
- incompat_flags 0x29
- ( MIXED_BACKREF |
- COMPRESS_LZO |
- BIG_METADATA )
- csum_type 0
- csum_size 4
- cache_generation 83438
- uuid_tree_generation 83438
- dev_item.uuid 184dcb12-1171-4036-9539-4ae5da796fb8
- dev_item.fsid cba641be-f5a2-444b-af88-359f7edae8aa [match]
- dev_item.type 0
- dev_item.total_bytes 3000592982016
- dev_item.bytes_used 2325724790784
- dev_item.io_align 4096
- dev_item.io_width 4096
- dev_item.sector_size 4096
- dev_item.devid 2
- dev_item.dev_group 0
- dev_item.seek_speed 0
- dev_item.bandwidth 0
- dev_item.generation 0
- floyd@nas ~ $ sudo btrfs-show-super -i2 /dev/sdc
- superblock: bytenr=274877906944, device=/dev/sdc
- ---------------------------------------------------------
- csum 0x31b05374 [match]
- bytenr 274877906944
- flags 0x1
- ( WRITTEN )
- magic _BHRfS_M [match]
- fsid cba641be-f5a2-444b-af88-359f7edae8aa
- label RAID
- generation 83438
- root 8789920350208
- sys_array_size 129
- chunk_root_generation 82188
- root_level 1
- chunk_root 8788035780608
- chunk_root_level 1
- log_root 0
- log_root_transid 0
- log_root_level 0
- total_bytes 9001778946048
- bytes_used 2727475957760
- sectorsize 4096
- nodesize 16384
- leafsize 16384
- stripesize 4096
- root_dir 6
- num_devices 3
- compat_flags 0x0
- compat_ro_flags 0x0
- incompat_flags 0x29
- ( MIXED_BACKREF |
- COMPRESS_LZO |
- BIG_METADATA )
- csum_type 0
- csum_size 4
- cache_generation 83438
- uuid_tree_generation 83438
- dev_item.uuid 184dcb12-1171-4036-9539-4ae5da796fb8
- dev_item.fsid cba641be-f5a2-444b-af88-359f7edae8aa [match]
- dev_item.type 0
- dev_item.total_bytes 3000592982016
- dev_item.bytes_used 2325724790784
- dev_item.io_align 4096
- dev_item.io_width 4096
- dev_item.sector_size 4096
- dev_item.devid 2
- dev_item.dev_group 0
- dev_item.seek_speed 0
- dev_item.bandwidth 0
- dev_item.generation 0
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