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  1. sudo mount /dev/md0 /mnt/md0
  2. mount: /mnt/md0: can't read superblock on /dev/md0.
  3.  
  4. cat /proc/mdstat
  5. md0 : inactive sdh[13](S) sdc[8](S) sdm[0](S) sdb[7](S) sdj[14](S) sdd[9](S) sdk[5](S) sdg[12](S) sda[6](S) sdn[2](S) sdl[1](S) sde[10](S) sdf[11](S)
  6. 76185162872 blocks super 1.2
  7.  
  8. sudo mdadm --stop /dev/md0
  9. mdadm: stopped /dev/md0
  10.  
  11. sudo mdadm --assemble /dev/md0 /dev/sda /dev/sdb /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/sdh /dev/sdj /dev/sdk /dev/sdl /dev/sdm /dev/sdn
  12. mdadm: /dev/md0 assembled from 5 drives - not enough to start the array.
  13.  
  14. sudo mdadm --assemble /dev/md0 /dev/sda /dev/sdb /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/sdh
  15. mdadm: /dev/md0 assembled from 8 drives - not enough to start the array.
  16.  
  17. sudo mdadm --examine /dev/sda
  18. /dev/sda:
  19. Magic : a92b4efc
  20. Version : 1.2
  21. Feature Map : 0x1
  22. Array UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  23. Name : goliath:0 (local to host goliath)
  24. Creation Time : Sat Nov 5 18:56:32 2016
  25. Raid Level : raid6
  26. Raid Devices : 13
  27.  
  28. Avail Dev Size : 11720794288 (5588.91 GiB 6001.05 GB)
  29. Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  30. Used Dev Size : 11720782848 (5588.90 GiB 6001.04 GB)
  31. Data Offset : 250880 sectors
  32. Super Offset : 8 sectors
  33. Unused Space : before=250800 sectors, after=11440 sectors
  34. State : clean
  35. Device UUID : 344864e7:5e19631d:0b14d41f:58264c67
  36.  
  37. Internal Bitmap : 8 sectors from superblock
  38. Update Time : Thu Apr 18 09:07:38 2019
  39. Bad Block Log : 512 entries available at offset 32 sectors
  40. Checksum : 447ce0e - correct
  41. Events : 1913085
  42.  
  43. Layout : left-symmetric
  44. Chunk Size : 512K
  45.  
  46. Device Role : Active device 12
  47. Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
  48.  
  49. sudo mdadm --examine /dev/sdb
  50. /dev/sdb:
  51. Magic : a92b4efc
  52. Version : 1.2
  53. Feature Map : 0x1
  54. Array UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  55. Name : goliath:0 (local to host goliath)
  56. Creation Time : Sat Nov 5 18:56:32 2016
  57. Raid Level : raid6
  58. Raid Devices : 13
  59.  
  60. Avail Dev Size : 11720794288 (5588.91 GiB 6001.05 GB)
  61. Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  62. Used Dev Size : 11720782848 (5588.90 GiB 6001.04 GB)
  63. Data Offset : 250880 sectors
  64. Super Offset : 8 sectors
  65. Unused Space : before=250800 sectors, after=11440 sectors
  66. State : clean
  67. Device UUID : 244b3058:6919fa6f:c2499e3d:fb9db6e1
  68.  
  69. Internal Bitmap : 8 sectors from superblock
  70. Update Time : Thu Apr 18 09:07:38 2019
  71. Bad Block Log : 512 entries available at offset 32 sectors
  72. Checksum : 5fdf7e64 - correct
  73. Events : 1913085
  74.  
  75. Layout : left-symmetric
  76. Chunk Size : 512K
  77.  
  78. Device Role : Active device 11
  79. Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
  80.  
  81. sudo mdadm --examine /dev/sdc
  82. /dev/sdc:
  83. Magic : a92b4efc
  84. Version : 1.2
  85. Feature Map : 0x1
  86. Array UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  87. Name : goliath:0 (local to host goliath)
  88. Creation Time : Sat Nov 5 18:56:32 2016
  89. Raid Level : raid6
  90. Raid Devices : 13
  91.  
  92. Avail Dev Size : 11720794288 (5588.91 GiB 6001.05 GB)
  93. Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  94. Used Dev Size : 11720782848 (5588.90 GiB 6001.04 GB)
  95. Data Offset : 250880 sectors
  96. Super Offset : 8 sectors
  97. Unused Space : before=250800 sectors, after=11440 sectors
  98. State : clean
  99. Device UUID : 9081b898:7782d040:acdcc700:e8621ca2
  100.  
  101. Internal Bitmap : 8 sectors from superblock
  102. Update Time : Thu Apr 18 09:07:38 2019
  103. Bad Block Log : 512 entries available at offset 32 sectors
  104. Checksum : f4cd75b5 - correct
  105. Events : 1913085
  106.  
  107. Layout : left-symmetric
  108. Chunk Size : 512K
  109.  
  110. Device Role : Active device 10
  111. Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
  112.  
  113. sudo mdadm --examine /dev/sdd
  114. /dev/sdd:
  115. Magic : a92b4efc
  116. Version : 1.2
  117. Feature Map : 0x1
  118. Array UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  119. Name : goliath:0 (local to host goliath)
  120. Creation Time : Sat Nov 5 18:56:32 2016
  121. Raid Level : raid6
  122. Raid Devices : 13
  123.  
  124. Avail Dev Size : 11720794288 (5588.91 GiB 6001.05 GB)
  125. Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  126. Used Dev Size : 11720782848 (5588.90 GiB 6001.04 GB)
  127. Data Offset : 250880 sectors
  128. Super Offset : 8 sectors
  129. Unused Space : before=250800 sectors, after=11440 sectors
  130. State : clean
  131. Device UUID : 1b569018:549dae95:bbd59910:601886e3
  132.  
  133. Internal Bitmap : 8 sectors from superblock
  134. Update Time : Thu Apr 18 09:07:38 2019
  135. Bad Block Log : 512 entries available at offset 32 sectors
  136. Checksum : 1abf13a6 - correct
  137. Events : 1913085
  138.  
  139. Layout : left-symmetric
  140. Chunk Size : 512K
  141.  
  142. Device Role : Active device 9
  143. Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
  144.  
  145. sudo mdadm --examine /dev/sde
  146. /dev/sde:
  147. Magic : a92b4efc
  148. Version : 1.2
  149. Feature Map : 0x1
  150. Array UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  151. Name : goliath:0 (local to host goliath)
  152. Creation Time : Sat Nov 5 18:56:32 2016
  153. Raid Level : raid6
  154. Raid Devices : 13
  155.  
  156. Avail Dev Size : 11720794288 (5588.91 GiB 6001.05 GB)
  157. Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  158. Used Dev Size : 11720782848 (5588.90 GiB 6001.04 GB)
  159. Data Offset : 250880 sectors
  160. Super Offset : 8 sectors
  161. Unused Space : before=250800 sectors, after=11440 sectors
  162. State : clean
  163. Device UUID : 534b24a4:63d20861:502e4012:53fe2652
  164.  
  165. Internal Bitmap : 8 sectors from superblock
  166. Update Time : Thu Apr 18 09:07:38 2019
  167. Bad Block Log : 512 entries available at offset 32 sectors
  168. Checksum : e1f47c75 - correct
  169. Events : 1913085
  170.  
  171. Layout : left-symmetric
  172. Chunk Size : 512K
  173.  
  174. Device Role : Active device 8
  175. Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
  176.  
  177. sudo mdadm --examine /dev/sdf
  178. /dev/sdf:
  179. Magic : a92b4efc
  180. Version : 1.2
  181. Feature Map : 0x1
  182. Array UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  183. Name : goliath:0 (local to host goliath)
  184. Creation Time : Sat Nov 5 18:56:32 2016
  185. Raid Level : raid6
  186. Raid Devices : 13
  187.  
  188. Avail Dev Size : 11720794288 (5588.91 GiB 6001.05 GB)
  189. Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  190. Used Dev Size : 11720782848 (5588.90 GiB 6001.04 GB)
  191. Data Offset : 250880 sectors
  192. Super Offset : 8 sectors
  193. Unused Space : before=250800 sectors, after=11440 sectors
  194. State : clean
  195. Device UUID : 0821860a:7b75d1cc:bb512247:3dc34a12
  196.  
  197. Internal Bitmap : 8 sectors from superblock
  198. Update Time : Thu Apr 18 09:07:38 2019
  199. Bad Block Log : 512 entries available at offset 32 sectors
  200. Checksum : a924dd98 - correct
  201. Events : 1913085
  202.  
  203. Layout : left-symmetric
  204. Chunk Size : 512K
  205.  
  206. Device Role : Active device 7
  207. Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
  208.  
  209. sudo mdadm --examine /dev/sdg
  210. /dev/sdg:
  211. Magic : a92b4efc
  212. Version : 1.2
  213. Feature Map : 0x1
  214. Array UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  215. Name : goliath:0 (local to host goliath)
  216. Creation Time : Sat Nov 5 18:56:32 2016
  217. Raid Level : raid6
  218. Raid Devices : 13
  219.  
  220. Avail Dev Size : 11720794288 (5588.91 GiB 6001.05 GB)
  221. Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  222. Used Dev Size : 11720782848 (5588.90 GiB 6001.04 GB)
  223. Data Offset : 250880 sectors
  224. Super Offset : 8 sectors
  225. Unused Space : before=250800 sectors, after=11440 sectors
  226. State : clean
  227. Device UUID : 0c870013:b577639c:eba5f8d4:10a5fee4
  228.  
  229. Internal Bitmap : 8 sectors from superblock
  230. Update Time : Thu Apr 18 09:07:38 2019
  231. Bad Block Log : 512 entries available at offset 32 sectors
  232. Checksum : e1bb7bdb - correct
  233. Events : 1913085
  234.  
  235. Layout : left-symmetric
  236. Chunk Size : 512K
  237.  
  238. Device Role : Active device 6
  239. Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
  240.  
  241. sudo mdadm --examine /dev/sdh
  242. /dev/sdh:
  243. Magic : a92b4efc
  244. Version : 1.2
  245. Feature Map : 0x1
  246. Array UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  247. Name : goliath:0 (local to host goliath)
  248. Creation Time : Sat Nov 5 18:56:32 2016
  249. Raid Level : raid6
  250. Raid Devices : 13
  251.  
  252. Avail Dev Size : 11720794288 (5588.91 GiB 6001.05 GB)
  253. Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  254. Used Dev Size : 11720782848 (5588.90 GiB 6001.04 GB)
  255. Data Offset : 250880 sectors
  256. Super Offset : 8 sectors
  257. Unused Space : before=250800 sectors, after=11440 sectors
  258. State : clean
  259. Device UUID : 06713ac7:ab2a7de0:d6e0d447:52ed0231
  260.  
  261. Internal Bitmap : 8 sectors from superblock
  262. Update Time : Thu Apr 18 09:07:38 2019
  263. Bad Block Log : 512 entries available at offset 32 sectors
  264. Checksum : 98ef9bf9 - correct
  265. Events : 1913085
  266.  
  267. Layout : left-symmetric
  268. Chunk Size : 512K
  269.  
  270. Device Role : Active device 5
  271. Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
  272.  
  273. sudo mdadm --examine /dev/sdj
  274. /dev/sdj:
  275. Magic : a92b4efc
  276. Version : 1.2
  277. Feature Map : 0x1
  278. Array UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  279. Name : goliath:0 (local to host goliath)
  280. Creation Time : Sat Nov 5 18:56:32 2016
  281. Raid Level : raid6
  282. Raid Devices : 13
  283.  
  284. Avail Dev Size : 11720794288 (5588.91 GiB 6001.05 GB)
  285. Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  286. Used Dev Size : 11720782848 (5588.90 GiB 6001.04 GB)
  287. Data Offset : 250880 sectors
  288. Super Offset : 8 sectors
  289. Unused Space : before=250800 sectors, after=11440 sectors
  290. State : clean
  291. Device UUID : d6fb6b75:18fee031:84b97ab4:43ee3754
  292.  
  293. Internal Bitmap : 8 sectors from superblock
  294. Update Time : Thu Apr 18 09:07:43 2019
  295. Bad Block Log : 512 entries available at offset 32 sectors
  296. Checksum : 283bd3b6 - correct
  297. Events : 1913088
  298.  
  299. Layout : left-symmetric
  300. Chunk Size : 512K
  301.  
  302. Device Role : Active device 3
  303. Array State : AAAAA........ ('A' == active, '.' == missing, 'R' == replacing)
  304.  
  305. sudo mdadm --examine /dev/sdk
  306. /dev/sdk:
  307. Magic : a92b4efc
  308. Version : 1.2
  309. Feature Map : 0x1
  310. Array UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  311. Name : goliath:0 (local to host goliath)
  312. Creation Time : Sat Nov 5 18:56:32 2016
  313. Raid Level : raid6
  314. Raid Devices : 13
  315.  
  316. Avail Dev Size : 11720794288 (5588.91 GiB 6001.05 GB)
  317. Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  318. Used Dev Size : 11720782848 (5588.90 GiB 6001.04 GB)
  319. Data Offset : 250880 sectors
  320. Super Offset : 8 sectors
  321. Unused Space : before=250792 sectors, after=11440 sectors
  322. State : clean
  323. Device UUID : aa02fdc1:15332b2a:eee48dee:9d6a91df
  324.  
  325. Internal Bitmap : 8 sectors from superblock
  326. Update Time : Thu Apr 18 09:07:43 2019
  327. Bad Block Log : 512 entries available at offset 72 sectors
  328. Checksum : 3283b76b - correct
  329. Events : 1913088
  330.  
  331. Layout : left-symmetric
  332. Chunk Size : 512K
  333.  
  334. Device Role : Active device 4
  335. Array State : AAAAA........ ('A' == active, '.' == missing, 'R' == replacing)
  336.  
  337. sudo mdadm --examine /dev/sdl
  338. /dev/sdl:
  339. Magic : a92b4efc
  340. Version : 1.2
  341. Feature Map : 0x1
  342. Array UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  343. Name : goliath:0 (local to host goliath)
  344. Creation Time : Sat Nov 5 18:56:32 2016
  345. Raid Level : raid6
  346. Raid Devices : 13
  347.  
  348. Avail Dev Size : 11720794288 (5588.91 GiB 6001.05 GB)
  349. Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  350. Used Dev Size : 11720782848 (5588.90 GiB 6001.04 GB)
  351. Data Offset : 250880 sectors
  352. Super Offset : 8 sectors
  353. Unused Space : before=250792 sectors, after=11440 sectors
  354. State : clean
  355. Device UUID : 4701d341:4c70e117:8a8d37a0:19f8b474
  356.  
  357. Internal Bitmap : 8 sectors from superblock
  358. Update Time : Thu Apr 18 09:07:43 2019
  359. Bad Block Log : 512 entries available at offset 72 sectors
  360. Checksum : e6dd2971 - correct
  361. Events : 1913088
  362.  
  363. Layout : left-symmetric
  364. Chunk Size : 512K
  365.  
  366. Device Role : Active device 1
  367. Array State : AAAAA........ ('A' == active, '.' == missing, 'R' == replacing)
  368.  
  369. sudo mdadm --examine /dev/sdm
  370. /dev/sdm:
  371. Magic : a92b4efc
  372. Version : 1.2
  373. Feature Map : 0x1
  374. Array UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  375. Name : goliath:0 (local to host goliath)
  376. Creation Time : Sat Nov 5 18:56:32 2016
  377. Raid Level : raid6
  378. Raid Devices : 13
  379.  
  380. Avail Dev Size : 11720794288 (5588.91 GiB 6001.05 GB)
  381. Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  382. Used Dev Size : 11720782848 (5588.90 GiB 6001.04 GB)
  383. Data Offset : 250880 sectors
  384. Super Offset : 8 sectors
  385. Unused Space : before=250792 sectors, after=11440 sectors
  386. State : clean
  387. Device UUID : ab1c4435:3c735172:3cf07404:f66f2944
  388.  
  389. Internal Bitmap : 8 sectors from superblock
  390. Update Time : Thu Apr 18 09:07:43 2019
  391. Bad Block Log : 512 entries available at offset 72 sectors
  392. Checksum : 68702233 - correct
  393. Events : 1913088
  394.  
  395. Layout : left-symmetric
  396. Chunk Size : 512K
  397.  
  398. Device Role : Active device 0
  399. Array State : AAAAA........ ('A' == active, '.' == missing, 'R' == replacing)
  400.  
  401. sudo mdadm --examine /dev/sdn
  402. /dev/sdn:
  403. Magic : a92b4efc
  404. Version : 1.2
  405. Feature Map : 0x1
  406. Array UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  407. Name : goliath:0 (local to host goliath)
  408. Creation Time : Sat Nov 5 18:56:32 2016
  409. Raid Level : raid6
  410. Raid Devices : 13
  411.  
  412. Avail Dev Size : 11720794288 (5588.91 GiB 6001.05 GB)
  413. Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  414. Used Dev Size : 11720782848 (5588.90 GiB 6001.04 GB)
  415. Data Offset : 250880 sectors
  416. Super Offset : 8 sectors
  417. Unused Space : before=250792 sectors, after=11440 sectors
  418. State : clean
  419. Device UUID : b7465e3e:502defd4:dcf61288:b0f14a84
  420.  
  421. Internal Bitmap : 8 sectors from superblock
  422. Update Time : Thu Apr 18 09:07:43 2019
  423. Bad Block Log : 512 entries available at offset 72 sectors
  424. Checksum : 97e78eb0 - correct
  425. Events : 1913088
  426.  
  427. Layout : left-symmetric
  428. Chunk Size : 512K
  429.  
  430. Device Role : Active device 2
  431. Array State : AAAAA........ ('A' == active, '.' == missing, 'R' == replacing)
  432.  
  433. /dev/md0:
  434.           Version : 1.2
  435.     Creation Time : Sat Nov  5 18:56:32 2016
  436.        Raid Level : raid6
  437.        Array Size : 64464305664 (61477.95 GiB 66011.45 GB)
  438.     Used Dev Size : 5860391424 (5588.90 GiB 6001.04 GB)
  439.      Raid Devices : 13
  440.     Total Devices : 13
  441.       Persistence : Superblock is persistent
  442.  
  443.     Intent Bitmap : Internal
  444.  
  445.       Update Time : Tue Apr 16 19:14:14 2019
  446.             State : clean  
  447.    Active Devices : 13
  448.   Working Devices : 13
  449.    Failed Devices : 0
  450.     Spare Devices : 0
  451.  
  452.            Layout : left-symmetric
  453.        Chunk Size : 512K
  454.  
  455. Consistency Policy : bitmap
  456.  
  457.              Name : ubuntu:0  (local to host ubuntu)
  458.              UUID : 405dae60:c540c726:087bbaaf:a15c79c5
  459.            Events : 1913085
  460.  
  461.    Number   Major   Minor   RaidDevice State
  462.       0       8      192        0      active sync   /dev/sdm
  463.       1       8      176        1      active sync   /dev/sdl
  464.       2       8      208        2      active sync   /dev/sdn
  465.      14       8      144        3      active sync   /dev/sdj
  466.       5       8      160        4      active sync   /dev/sdk
  467.      13       8      112        5      active sync   /dev/sdh
  468.      12       8       96        6      active sync   /dev/sdg
  469.      11       8       80        7      active sync   /dev/sdf
  470.      10       8       64        8      active sync   /dev/sde
  471.       9       8       48        9      active sync   /dev/sdd
  472.       8       8       32       10      active sync   /dev/sdc
  473.       7       8       16       11      active sync   /dev/sdb
  474.       6       8        0       12      active sync   /dev/sda
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