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  1. floyd@nas ~ $ sudo btrfs-show-super -i0 /dev/sdd
  2. superblock: bytenr=65536, device=/dev/sdd
  3. ---------------------------------------------------------
  4. csum 0x5774bf49 [match]
  5. bytenr 65536
  6. flags 0x1
  7. ( WRITTEN )
  8. magic _BHRfS_M [match]
  9. fsid cba641be-f5a2-444b-af88-359f7edae8aa
  10. label RAID
  11. generation 83439
  12. root 8789923774464
  13. sys_array_size 129
  14. chunk_root_generation 82188
  15. root_level 1
  16. chunk_root 8788035780608
  17. chunk_root_level 1
  18. log_root 0
  19. log_root_transid 0
  20. log_root_level 0
  21. total_bytes 9001778946048
  22. bytes_used 2727475957760
  23. sectorsize 4096
  24. nodesize 16384
  25. leafsize 16384
  26. stripesize 4096
  27. root_dir 6
  28. num_devices 3
  29. compat_flags 0x0
  30. compat_ro_flags 0x0
  31. incompat_flags 0x29
  32. ( MIXED_BACKREF |
  33. COMPRESS_LZO |
  34. BIG_METADATA )
  35. csum_type 0
  36. csum_size 4
  37. cache_generation 83439
  38. uuid_tree_generation 83439
  39. dev_item.uuid 76372314-e7d3-485a-b993-11e94ddb27c0
  40. dev_item.fsid cba641be-f5a2-444b-af88-359f7edae8aa [match]
  41. dev_item.type 0
  42. dev_item.total_bytes 3000592982016
  43. dev_item.bytes_used 854732046336
  44. dev_item.io_align 4096
  45. dev_item.io_width 4096
  46. dev_item.sector_size 4096
  47. dev_item.devid 3
  48. dev_item.dev_group 0
  49. dev_item.seek_speed 0
  50. dev_item.bandwidth 0
  51. dev_item.generation 0
  52.  
  53. floyd@nas ~ $ sudo btrfs-show-super -i1 /dev/sdd
  54. superblock: bytenr=67108864, device=/dev/sdd
  55. ---------------------------------------------------------
  56. csum 0xf7159787 [match]
  57. bytenr 67108864
  58. flags 0x1
  59. ( WRITTEN )
  60. magic _BHRfS_M [match]
  61. fsid cba641be-f5a2-444b-af88-359f7edae8aa
  62. label RAID
  63. generation 83439
  64. root 8789923774464
  65. sys_array_size 129
  66. chunk_root_generation 82188
  67. root_level 1
  68. chunk_root 8788035780608
  69. chunk_root_level 1
  70. log_root 0
  71. log_root_transid 0
  72. log_root_level 0
  73. total_bytes 9001778946048
  74. bytes_used 2727475957760
  75. sectorsize 4096
  76. nodesize 16384
  77. leafsize 16384
  78. stripesize 4096
  79. root_dir 6
  80. num_devices 3
  81. compat_flags 0x0
  82. compat_ro_flags 0x0
  83. incompat_flags 0x29
  84. ( MIXED_BACKREF |
  85. COMPRESS_LZO |
  86. BIG_METADATA )
  87. csum_type 0
  88. csum_size 4
  89. cache_generation 83439
  90. uuid_tree_generation 83439
  91. dev_item.uuid 76372314-e7d3-485a-b993-11e94ddb27c0
  92. dev_item.fsid cba641be-f5a2-444b-af88-359f7edae8aa [match]
  93. dev_item.type 0
  94. dev_item.total_bytes 3000592982016
  95. dev_item.bytes_used 854732046336
  96. dev_item.io_align 4096
  97. dev_item.io_width 4096
  98. dev_item.sector_size 4096
  99. dev_item.devid 3
  100. dev_item.dev_group 0
  101. dev_item.seek_speed 0
  102. dev_item.bandwidth 0
  103. dev_item.generation 0
  104.  
  105. floyd@nas ~ $ sudo btrfs-show-super -i2 /dev/sdd
  106. superblock: bytenr=274877906944, device=/dev/sdd
  107. ---------------------------------------------------------
  108. csum 0x0a92c1b6 [match]
  109. bytenr 274877906944
  110. flags 0x1
  111. ( WRITTEN )
  112. magic _BHRfS_M [match]
  113. fsid cba641be-f5a2-444b-af88-359f7edae8aa
  114. label RAID
  115. generation 83439
  116. root 8789923774464
  117. sys_array_size 129
  118. chunk_root_generation 82188
  119. root_level 1
  120. chunk_root 8788035780608
  121. chunk_root_level 1
  122. log_root 0
  123. log_root_transid 0
  124. log_root_level 0
  125. total_bytes 9001778946048
  126. bytes_used 2727475957760
  127. sectorsize 4096
  128. nodesize 16384
  129. leafsize 16384
  130. stripesize 4096
  131. root_dir 6
  132. num_devices 3
  133. compat_flags 0x0
  134. compat_ro_flags 0x0
  135. incompat_flags 0x29
  136. ( MIXED_BACKREF |
  137. COMPRESS_LZO |
  138. BIG_METADATA )
  139. csum_type 0
  140. csum_size 4
  141. cache_generation 83439
  142. uuid_tree_generation 83439
  143. dev_item.uuid 76372314-e7d3-485a-b993-11e94ddb27c0
  144. dev_item.fsid cba641be-f5a2-444b-af88-359f7edae8aa [match]
  145. dev_item.type 0
  146. dev_item.total_bytes 3000592982016
  147. dev_item.bytes_used 854732046336
  148. dev_item.io_align 4096
  149. dev_item.io_width 4096
  150. dev_item.sector_size 4096
  151. dev_item.devid 3
  152. dev_item.dev_group 0
  153. dev_item.seek_speed 0
  154. dev_item.bandwidth 0
  155. dev_item.generation 0
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