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  1. strace -o tmp.create.out drbdmeta 2 v08 /dev/sda7 internal create-md -vvvvvvvvvvv results in:
  2.  
  3. execve("/sbin/drbdmeta", ["drbdmeta", "2", "v08", "/dev/sda7", "internal", "create-md", "-vvvvvvvvvvv"], [/* 24 vars */]) = 0
  4. brk(0) = 0xa9e000
  5. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8876ad5000
  6. access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
  7. open("/etc/ld.so.cache", O_RDONLY) = 3
  8. fstat(3, {st_mode=S_IFREG|0644, st_size=26253, ...}) = 0
  9. mmap(NULL, 26253, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f8876ace000
  10. close(3) = 0
  11. open("/lib64/libc.so.6", O_RDONLY) = 3
  12. read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360\355\1\0\0\0\0\0"..., 832) = 832
  13. fstat(3, {st_mode=S_IFREG|0755, st_size=1903208, ...}) = 0
  14. mmap(NULL, 3733672, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f8876527000
  15. mprotect(0x7f88766ad000, 2097152, PROT_NONE) = 0
  16. mmap(0x7f88768ad000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x186000) = 0x7f88768ad000
  17. mmap(0x7f88768b2000, 18600, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f88768b2000
  18. close(3) = 0
  19. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8876acd000
  20. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8876acc000
  21. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8876acb000
  22. arch_prctl(ARCH_SET_FS, 0x7f8876acc700) = 0
  23. mprotect(0x7f88768ad000, 16384, PROT_READ) = 0
  24. mprotect(0x7f8876ad6000, 4096, PROT_READ) = 0
  25. munmap(0x7f8876ace000, 26253) = 0
  26. brk(0) = 0xa9e000
  27. brk(0xabf000) = 0xabf000
  28. mmap(NULL, 139264, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8876aa9000
  29. open("/var/lock/drbd-147-2", O_RDWR|O_CREAT, 0600) = 3
  30. rt_sigaction(SIGALRM, {0x4098b0, [], SA_RESTORER, 0x7f8876559900}, {SIG_DFL, [], 0}, 8) = 0
  31. alarm(1) = 0
  32. fcntl(3, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=0, len=0}) = 0
  33. alarm(0) = 1
  34. rt_sigaction(SIGALRM, {SIG_DFL, [], SA_RESTORER, 0x7f8876559900}, NULL, 8) = 0
  35. open("/proc/drbd", O_RDONLY) = 4
  36. fstat(4, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
  37. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8876ad4000
  38. read(4, "version: 8.3.13 (api:88/proto:86"..., 1024) = 469
  39. read(4, "", 1024) = 0
  40. close(4) = 0
  41. munmap(0x7f8876ad4000, 4096) = 0
  42. open("/dev/sda7", O_RDWR|O_DIRECT) = 4
  43. fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 7), ...}) = 0
  44. ioctl(4, BLKSSZGET, 0x7fff45a9c918) = 0
  45. write(2, "hard_sect_size is 512 Byte\n", 27) = 27
  46. ioctl(4, BLKGETSIZE64, 0x7fff45a9c868) = 0
  47. pread(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096, 4292866048) = 4096
  48. write(2, " v08_md_disk_to_cpu : pre"..., 63) = 63
  49. write(2, "ffdff000 00 00 00 00 00 00 00 0"..., 79) = 79
  50. write(2, "*\n", 2) = 2
  51. write(2, "ffdffff0 ", 9) = 9
  52. write(2, " 00", 3) = 3
  53. write(2, " 00", 3) = 3
  54. write(2, " 00", 3) = 3
  55. write(2, " 00", 3) = 3
  56. write(2, " 00", 3) = 3
  57. write(2, " 00", 3) = 3
  58. write(2, " 00", 3) = 3
  59. write(2, " 00", 3) = 3
  60. write(2, " ", 1) = 1
  61. write(2, " 00", 3) = 3
  62. write(2, " 00", 3) = 3
  63. write(2, " 00", 3) = 3
  64. write(2, " 00", 3) = 3
  65. write(2, " 00", 3) = 3
  66. write(2, " 00", 3) = 3
  67. write(2, " 00", 3) = 3
  68. write(2, " 00", 3) = 3
  69. write(2, " |", 3) = 3
  70. write(2, ".", 1) = 1
  71. write(2, ".", 1) = 1
  72. write(2, ".", 1) = 1
  73. write(2, ".", 1) = 1
  74. write(2, ".", 1) = 1
  75. write(2, ".", 1) = 1
  76. write(2, ".", 1) = 1
  77. write(2, ".", 1) = 1
  78. write(2, ".", 1) = 1
  79. write(2, ".", 1) = 1
  80. write(2, ".", 1) = 1
  81. write(2, ".", 1) = 1
  82. write(2, ".", 1) = 1
  83. write(2, ".", 1) = 1
  84. write(2, ".", 1) = 1
  85. write(2, ".", 1) = 1
  86. write(2, "|\n", 2) = 2
  87. write(2, "ffe00000\n", 9) = 9
  88. write(2, "v08 Magic number not found\n", 27) = 27
  89. open("/var/lib/drbd/drbd-minor-2.lkbd", O_RDONLY) = 5
  90. fstat(5, {st_mode=S_IFREG|0644, st_size=21, ...}) = 0
  91. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8876ad4000
  92. read(5, "4292870144\t/dev/sda7\n", 4096) = 21
  93. read(5, "", 4096) = 0
  94. close(5) = 0
  95. munmap(0x7f8876ad4000, 4096) = 0
  96. write(2, " last known info: 4292870144 /de"..., 39) = 39
  97. pread(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 69632, 0) = 69632
  98. write(2, " check_for_existing_data : pre"..., 63) = 63
  99. write(2, "00000000 00 00 00 00 00 00 00 0"..., 79) = 79
  100. write(2, "*\n", 2) = 2
  101. write(2, "00010ff0 ", 9) = 9
  102. write(2, " 00", 3) = 3
  103. write(2, " 00", 3) = 3
  104. write(2, " 00", 3) = 3
  105. write(2, " 00", 3) = 3
  106. write(2, " 00", 3) = 3
  107. write(2, " 00", 3) = 3
  108. write(2, " 00", 3) = 3
  109. write(2, " 00", 3) = 3
  110. write(2, " ", 1) = 1
  111. write(2, " 00", 3) = 3
  112. write(2, " 00", 3) = 3
  113. write(2, " 00", 3) = 3
  114. write(2, " 00", 3) = 3
  115. write(2, " 00", 3) = 3
  116. write(2, " 00", 3) = 3
  117. write(2, " 00", 3) = 3
  118. write(2, " 00", 3) = 3
  119. write(2, " |", 3) = 3
  120. write(2, ".", 1) = 1
  121. write(2, ".", 1) = 1
  122. write(2, ".", 1) = 1
  123. write(2, ".", 1) = 1
  124. write(2, ".", 1) = 1
  125. write(2, ".", 1) = 1
  126. write(2, ".", 1) = 1
  127. write(2, ".", 1) = 1
  128. write(2, ".", 1) = 1
  129. write(2, ".", 1) = 1
  130. write(2, ".", 1) = 1
  131. write(2, ".", 1) = 1
  132. write(2, ".", 1) = 1
  133. write(2, ".", 1) = 1
  134. write(2, ".", 1) = 1
  135. write(2, ".", 1) = 1
  136. write(2, "|\n", 2) = 2
  137. write(2, "00011000\n", 9) = 9
  138. pread(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096, 4158652416) = 4096
  139. write(2, " check_internal_md_flavours: pre"..., 63) = 63
  140. write(2, "f7e00000 00 00 00 00 00 00 00 0"..., 79) = 79
  141. write(2, "*\n", 2) = 2
  142. write(2, "f7e00ff0 ", 9) = 9
  143. write(2, " 00", 3) = 3
  144. write(2, " 00", 3) = 3
  145. write(2, " 00", 3) = 3
  146. write(2, " 00", 3) = 3
  147. write(2, " 00", 3) = 3
  148. write(2, " 00", 3) = 3
  149. write(2, " 00", 3) = 3
  150. write(2, " 00", 3) = 3
  151. write(2, " ", 1) = 1
  152. write(2, " 00", 3) = 3
  153. write(2, " 00", 3) = 3
  154. write(2, " 00", 3) = 3
  155. write(2, " 00", 3) = 3
  156. write(2, " 00", 3) = 3
  157. write(2, " 00", 3) = 3
  158. write(2, " 00", 3) = 3
  159. write(2, " 00", 3) = 3
  160. write(2, " |", 3) = 3
  161. write(2, ".", 1) = 1
  162. write(2, ".", 1) = 1
  163. write(2, ".", 1) = 1
  164. write(2, ".", 1) = 1
  165. write(2, ".", 1) = 1
  166. write(2, ".", 1) = 1
  167. write(2, ".", 1) = 1
  168. write(2, ".", 1) = 1
  169. write(2, ".", 1) = 1
  170. write(2, ".", 1) = 1
  171. write(2, ".", 1) = 1
  172. write(2, ".", 1) = 1
  173. write(2, ".", 1) = 1
  174. write(2, ".", 1) = 1
  175. write(2, ".", 1) = 1
  176. write(2, ".", 1) = 1
  177. write(2, "|\n", 2) = 2
  178. write(2, "f7e01000\n", 9) = 9
  179. write(2, "v07 Magic number not found\n", 27) = 27
  180. pread(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096, 4292866048) = 4096
  181. write(2, " check_internal_md_flavours: pre"..., 63) = 63
  182. write(2, "ffdff000 00 00 00 00 00 00 00 0"..., 79) = 79
  183. write(2, "*\n", 2) = 2
  184. write(2, "ffdffff0 ", 9) = 9
  185. write(2, " 00", 3) = 3
  186. write(2, " 00", 3) = 3
  187. write(2, " 00", 3) = 3
  188. write(2, " 00", 3) = 3
  189. write(2, " 00", 3) = 3
  190. write(2, " 00", 3) = 3
  191. write(2, " 00", 3) = 3
  192. write(2, " 00", 3) = 3
  193. write(2, " ", 1) = 1
  194. write(2, " 00", 3) = 3
  195. write(2, " 00", 3) = 3
  196. write(2, " 00", 3) = 3
  197. write(2, " 00", 3) = 3
  198. write(2, " 00", 3) = 3
  199. write(2, " 00", 3) = 3
  200. write(2, " 00", 3) = 3
  201. write(2, " 00", 3) = 3
  202. write(2, " |", 3) = 3
  203. write(2, ".", 1) = 1
  204. write(2, ".", 1) = 1
  205. write(2, ".", 1) = 1
  206. write(2, ".", 1) = 1
  207. write(2, ".", 1) = 1
  208. write(2, ".", 1) = 1
  209. write(2, ".", 1) = 1
  210. write(2, ".", 1) = 1
  211. write(2, ".", 1) = 1
  212. write(2, ".", 1) = 1
  213. write(2, ".", 1) = 1
  214. write(2, ".", 1) = 1
  215. write(2, ".", 1) = 1
  216. write(2, ".", 1) = 1
  217. write(2, ".", 1) = 1
  218. write(2, ".", 1) = 1
  219. write(2, "|\n", 2) = 2
  220. write(2, "ffe00000\n", 9) = 9
  221. write(2, "v07 Magic number not found\n", 27) = 27
  222. write(2, "v08 Magic number not found\n", 27) = 27
  223. fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
  224. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8876ad4000
  225. write(1, "Writing meta data...\n", 21) = 21
  226. write(2, "md_offset: 4292866048\n", 22) = 22
  227. write(2, "al_offset: 4292833280 (-64)\n", 28) = 28
  228. write(2, "bm_offset: 4292702208 (-320)\n", 29) = 29
  229. write(2, "md_size_sect: 328\n", 18) = 18
  230. write(1, "initializing activity log\n", 26) = 26
  231. pwrite(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 32768, 4292833280) = 32768
  232. write(2, " md_initialize_common:AL : pwr"..., 64) = 64
  233. write(2, "NOT initialized bitmap\n", 23) = 23
  234. pwrite(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\4\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096, 4292866048) = 4096
  235. write(2, " v08_md_cpu_to_disk : pwr"..., 64) = 64
  236. open("/var/lib/drbd/drbd-minor-2.lkbd", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 5
  237. fstat(5, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
  238. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8876ad3000
  239. write(5, "4292870144\t/dev/sda7\n", 21) = 21
  240. fsync(5) = 0
  241. close(5) = 0
  242. munmap(0x7f8876ad3000, 4096) = 0
  243. fsync(4) = 0
  244. close(4) = 0
  245. write(1, "New drbd meta data block success"..., 47) = 47
  246. exit_group(0) = ?
  247.  
  248.  
  249. and strace -o tmp.write-dev-uuid.out drbdmeta 2 v08 /dev/sda7 internal write-dev-uuid B8B8EDD2900264FC -vvvvvvvvvvv results in
  250.  
  251.  
  252. execve("/sbin/drbdmeta", ["drbdmeta", "2", "v08", "/dev/sda7", "internal", "write-dev-uuid", "B8B8EDD2900264FC", "-vvvvvvvvvvv"], [/* 24 vars */]) = 0
  253. brk(0) = 0x2370000
  254. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb7d4d85000
  255. access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
  256. open("/etc/ld.so.cache", O_RDONLY) = 3
  257. fstat(3, {st_mode=S_IFREG|0644, st_size=26253, ...}) = 0
  258. mmap(NULL, 26253, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fb7d4d7e000
  259. close(3) = 0
  260. open("/lib64/libc.so.6", O_RDONLY) = 3
  261. read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360\355\1\0\0\0\0\0"..., 832) = 832
  262. fstat(3, {st_mode=S_IFREG|0755, st_size=1903208, ...}) = 0
  263. mmap(NULL, 3733672, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fb7d47d7000
  264. mprotect(0x7fb7d495d000, 2097152, PROT_NONE) = 0
  265. mmap(0x7fb7d4b5d000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x186000) = 0x7fb7d4b5d000
  266. mmap(0x7fb7d4b62000, 18600, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fb7d4b62000
  267. close(3) = 0
  268. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb7d4d7d000
  269. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb7d4d7c000
  270. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb7d4d7b000
  271. arch_prctl(ARCH_SET_FS, 0x7fb7d4d7c700) = 0
  272. mprotect(0x7fb7d4b5d000, 16384, PROT_READ) = 0
  273. mprotect(0x7fb7d4d86000, 4096, PROT_READ) = 0
  274. munmap(0x7fb7d4d7e000, 26253) = 0
  275. brk(0) = 0x2370000
  276. brk(0x2391000) = 0x2391000
  277. mmap(NULL, 139264, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb7d4d59000
  278. open("/var/lock/drbd-147-2", O_RDWR|O_CREAT, 0600) = 3
  279. rt_sigaction(SIGALRM, {0x4098b0, [], SA_RESTORER, 0x7fb7d4809900}, {SIG_DFL, [], 0}, 8) = 0
  280. alarm(1) = 0
  281. fcntl(3, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=0, len=0}) = 0
  282. alarm(0) = 1
  283. rt_sigaction(SIGALRM, {SIG_DFL, [], SA_RESTORER, 0x7fb7d4809900}, NULL, 8) = 0
  284. open("/proc/drbd", O_RDONLY) = 4
  285. fstat(4, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
  286. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb7d4d84000
  287. read(4, "version: 8.3.13 (api:88/proto:86"..., 1024) = 469
  288. read(4, "", 1024) = 0
  289. close(4) = 0
  290. munmap(0x7fb7d4d84000, 4096) = 0
  291. open("/dev/sda7", O_RDWR|O_DIRECT) = 4
  292. fstat(4, {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 7), ...}) = 0
  293. ioctl(4, BLKSSZGET, 0x7fff6d2bf4e8) = 0
  294. write(2, "hard_sect_size is 512 Byte\n", 27) = 27
  295. ioctl(4, BLKGETSIZE64, 0x7fff6d2bf438) = 0
  296. pread(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096, 4292866048) = 4096
  297. write(2, " v08_md_disk_to_cpu : pre"..., 63) = 63
  298. write(2, "ffdff000 00 00 00 00 00 00 00 0"..., 79) = 79
  299. write(2, "*\n", 2) = 2
  300. write(2, "ffdffff0 ", 9) = 9
  301. write(2, " 00", 3) = 3
  302. write(2, " 00", 3) = 3
  303. write(2, " 00", 3) = 3
  304. write(2, " 00", 3) = 3
  305. write(2, " 00", 3) = 3
  306. write(2, " 00", 3) = 3
  307. write(2, " 00", 3) = 3
  308. write(2, " 00", 3) = 3
  309. write(2, " ", 1) = 1
  310. write(2, " 00", 3) = 3
  311. write(2, " 00", 3) = 3
  312. write(2, " 00", 3) = 3
  313. write(2, " 00", 3) = 3
  314. write(2, " 00", 3) = 3
  315. write(2, " 00", 3) = 3
  316. write(2, " 00", 3) = 3
  317. write(2, " 00", 3) = 3
  318. write(2, " |", 3) = 3
  319. write(2, ".", 1) = 1
  320. write(2, ".", 1) = 1
  321. write(2, ".", 1) = 1
  322. write(2, ".", 1) = 1
  323. write(2, ".", 1) = 1
  324. write(2, ".", 1) = 1
  325. write(2, ".", 1) = 1
  326. write(2, ".", 1) = 1
  327. write(2, ".", 1) = 1
  328. write(2, ".", 1) = 1
  329. write(2, ".", 1) = 1
  330. write(2, ".", 1) = 1
  331. write(2, ".", 1) = 1
  332. write(2, ".", 1) = 1
  333. write(2, ".", 1) = 1
  334. write(2, ".", 1) = 1
  335. write(2, "|\n", 2) = 2
  336. write(2, "ffe00000\n", 9) = 9
  337. write(2, "v08 Magic number not found\n", 27) = 27
  338. open("/var/lib/drbd/drbd-minor-2.lkbd", O_RDONLY) = 5
  339. fstat(5, {st_mode=S_IFREG|0644, st_size=21, ...}) = 0
  340. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb7d4d84000
  341. read(5, "4292870144\t/dev/sda7\n", 4096) = 21
  342. read(5, "", 4096) = 0
  343. close(5) = 0
  344. munmap(0x7fb7d4d84000, 4096) = 0
  345. write(2, " last known info: 4292870144 /de"..., 39) = 39
  346. exit_group(-1)
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