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  1. root@vps1:~# pkill nginx && service nginx start
  2. root@vps1:~# trace-cmd record -e \*unlink\*
  3. The program 'trace-cmd' is currently not installed. You can install it by typing:
  4. apt install trace-cmd
  5. root@vps1:~# ^C
  6. root@vps1:~# ^C
  7. root@vps1:~# apt install trace-cmd
  8. Reading package lists... Done
  9. Building dependency tree
  10. Reading state information... Done
  11. Suggested packages:
  12. kernelshark
  13. The following NEW packages will be installed:
  14. trace-cmd
  15. 0 upgraded, 1 newly installed, 0 to remove and 39 not upgraded.
  16. Need to get 279 kB of archives.
  17. After this operation, 1,138 kB of additional disk space will be used.
  18. Get:1 http://nova.clouds.archive.ubuntu.com/ubuntu xenial/universe amd64 trace-cmd amd64 2.5.3-1 [279 kB]
  19. Fetched 279 kB in 0s (426 kB/s)
  20. Selecting previously unselected package trace-cmd.
  21. (Reading database ... 158259 files and directories currently installed.)
  22. Preparing to unpack .../trace-cmd_2.5.3-1_amd64.deb ...
  23. Unpacking trace-cmd (2.5.3-1) ...
  24. Processing triggers for man-db (2.7.5-1) ...
  25. Setting up trace-cmd (2.5.3-1) ...
  26. root@vps1:~# trace-cmd record -e \*unlink\*
  27. /sys/kernel/debug/tracing/events/*unlink*/filter
  28. /sys/kernel/debug/tracing/events/*/*unlink*/filter
  29. Hit Ctrl^C to stop recording
  30. ^CKernel buffer statistics:
  31. Note: "entries" are the entries left in the kernel ring buffer and are not
  32. recorded in the trace data. They should all be zero.
  33.  
  34. CPU: 0
  35. entries: 0
  36. overrun: 0
  37. commit overrun: 0
  38. bytes: 2120
  39. oldest event ts: 1188446.417938
  40. now ts: 1188462.972789
  41. dropped events: 0
  42. read events: 180
  43.  
  44. CPU0 data recorded at offset=0x492000
  45. 8192 bytes in size
  46. root@vps1:~# trace-cmd report
  47. version = 6
  48. cpus=1
  49. fail2ban-server-2766 [000] 1188402.961623: sys_enter_unlink: pathname: 0x0115441c
  50. fail2ban-server-2766 [000] 1188402.962652: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  51. fail2ban-server-2766 [000] 1188402.963026: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  52. fail2ban-server-2766 [000] 1188402.963069: sys_exit_unlink: 0x0
  53. fail2ban-server-2762 [000] 1188402.970137: sys_enter_unlink: pathname: 0x0115441c
  54. fail2ban-server-2762 [000] 1188402.970143: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  55. fail2ban-server-2762 [000] 1188402.970152: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  56. fail2ban-server-2762 [000] 1188402.970171: sys_exit_unlink: 0x0
  57. fail2ban-server-2810 [000] 1188402.975203: sys_enter_unlink: pathname: 0x0115441c
  58. fail2ban-server-2810 [000] 1188402.975207: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  59. fail2ban-server-2810 [000] 1188402.975215: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  60. fail2ban-server-2810 [000] 1188402.975233: sys_exit_unlink: 0x0
  61. fail2ban-server-2781 [000] 1188402.979706: sys_enter_unlink: pathname: 0x0115441c
  62. fail2ban-server-2781 [000] 1188402.979711: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  63. fail2ban-server-2781 [000] 1188402.979719: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  64. fail2ban-server-2781 [000] 1188402.979737: sys_exit_unlink: 0x0
  65. fail2ban-server-2793 [000] 1188402.983807: sys_enter_unlink: pathname: 0x0115441c
  66. fail2ban-server-2793 [000] 1188402.983812: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  67. fail2ban-server-2793 [000] 1188402.983820: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  68. fail2ban-server-2793 [000] 1188402.983837: sys_exit_unlink: 0x0
  69. fail2ban-server-2799 [000] 1188402.991036: sys_enter_unlink: pathname: 0x0115441c
  70. fail2ban-server-2799 [000] 1188402.991042: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  71. fail2ban-server-2799 [000] 1188402.991052: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  72. fail2ban-server-2799 [000] 1188402.991070: sys_exit_unlink: 0x0
  73. fail2ban-server-2790 [000] 1188408.535366: sys_enter_unlink: pathname: 0x0115441c
  74. fail2ban-server-2790 [000] 1188408.535385: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  75. fail2ban-server-2790 [000] 1188408.535400: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  76. fail2ban-server-2790 [000] 1188408.535433: sys_exit_unlink: 0x0
  77. fail2ban-server-2790 [000] 1188408.557253: sys_enter_unlink: pathname: 0x0115441c
  78. fail2ban-server-2790 [000] 1188408.557259: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  79. fail2ban-server-2790 [000] 1188408.557268: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  80. fail2ban-server-2790 [000] 1188408.557291: sys_exit_unlink: 0x0
  81. fail2ban-server-2790 [000] 1188408.562915: sys_enter_unlink: pathname: 0x0115441c
  82. fail2ban-server-2790 [000] 1188408.562921: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  83. fail2ban-server-2790 [000] 1188408.562931: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  84. fail2ban-server-2790 [000] 1188408.562954: sys_exit_unlink: 0x0
  85. fail2ban-server-2781 [000] 1188427.919519: sys_enter_unlink: pathname: 0x0115441c
  86. fail2ban-server-2781 [000] 1188427.919546: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  87. fail2ban-server-2781 [000] 1188427.919562: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  88. fail2ban-server-2781 [000] 1188427.919607: sys_exit_unlink: 0x0
  89. fail2ban-server-2766 [000] 1188427.929355: sys_enter_unlink: pathname: 0x0115441c
  90. fail2ban-server-2766 [000] 1188427.929362: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  91. fail2ban-server-2766 [000] 1188427.929369: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  92. fail2ban-server-2766 [000] 1188427.929403: sys_exit_unlink: 0x0
  93. fail2ban-server-2762 [000] 1188427.934886: sys_enter_unlink: pathname: 0x0115441c
  94. fail2ban-server-2762 [000] 1188427.934890: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  95. fail2ban-server-2762 [000] 1188427.934897: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  96. fail2ban-server-2762 [000] 1188427.934915: sys_exit_unlink: 0x0
  97. fail2ban-server-2793 [000] 1188427.940923: sys_enter_unlink: pathname: 0x0115441c
  98. fail2ban-server-2793 [000] 1188427.940927: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  99. fail2ban-server-2793 [000] 1188427.940935: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  100. fail2ban-server-2793 [000] 1188427.940952: sys_exit_unlink: 0x0
  101. fail2ban-server-2810 [000] 1188427.947043: sys_enter_unlink: pathname: 0x0115441c
  102. fail2ban-server-2810 [000] 1188427.947047: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  103. fail2ban-server-2810 [000] 1188427.947054: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  104. fail2ban-server-2810 [000] 1188427.947071: sys_exit_unlink: 0x0
  105. fail2ban-server-2799 [000] 1188427.952888: sys_enter_unlink: pathname: 0x0115441c
  106. fail2ban-server-2799 [000] 1188427.952892: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  107. fail2ban-server-2799 [000] 1188427.952901: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  108. fail2ban-server-2799 [000] 1188427.952919: sys_exit_unlink: 0x0
  109. fail2ban-server-2762 [000] 1188434.995095: sys_enter_unlink: pathname: 0x0115441c
  110. fail2ban-server-2762 [000] 1188434.995117: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  111. fail2ban-server-2762 [000] 1188434.995134: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  112. fail2ban-server-2762 [000] 1188434.995166: sys_exit_unlink: 0x0
  113. fail2ban-server-2810 [000] 1188435.003120: sys_enter_unlink: pathname: 0x0115441c
  114. fail2ban-server-2810 [000] 1188435.003133: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  115. fail2ban-server-2810 [000] 1188435.003156: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  116. fail2ban-server-2810 [000] 1188435.003205: sys_exit_unlink: 0x0
  117. fail2ban-server-2793 [000] 1188435.010001: sys_enter_unlink: pathname: 0x0115441c
  118. fail2ban-server-2793 [000] 1188435.010007: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  119. fail2ban-server-2793 [000] 1188435.010019: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  120. fail2ban-server-2793 [000] 1188435.010043: sys_exit_unlink: 0x0
  121. fail2ban-server-2781 [000] 1188435.017049: sys_enter_unlink: pathname: 0x0115441c
  122. fail2ban-server-2781 [000] 1188435.017055: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  123. fail2ban-server-2781 [000] 1188435.017063: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  124. fail2ban-server-2781 [000] 1188435.017084: sys_exit_unlink: 0x0
  125. fail2ban-server-2766 [000] 1188435.024258: sys_enter_unlink: pathname: 0x0115441c
  126. fail2ban-server-2766 [000] 1188435.024263: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  127. fail2ban-server-2766 [000] 1188435.024272: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  128. fail2ban-server-2766 [000] 1188435.024294: sys_exit_unlink: 0x0
  129. fail2ban-server-2799 [000] 1188435.032656: sys_enter_unlink: pathname: 0x0115441c
  130. fail2ban-server-2799 [000] 1188435.032662: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  131. fail2ban-server-2799 [000] 1188435.032672: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  132. fail2ban-server-2799 [000] 1188435.032698: sys_exit_unlink: 0x0
  133. fail2ban-server-2781 [000] 1188445.529508: sys_enter_unlink: pathname: 0x0115441c
  134. fail2ban-server-2781 [000] 1188445.529531: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  135. fail2ban-server-2781 [000] 1188445.529545: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  136. fail2ban-server-2781 [000] 1188445.529578: sys_exit_unlink: 0x0
  137. fail2ban-server-2766 [000] 1188445.535301: sys_enter_unlink: pathname: 0x0115441c
  138. fail2ban-server-2766 [000] 1188445.535317: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  139. fail2ban-server-2766 [000] 1188445.535336: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  140. fail2ban-server-2766 [000] 1188445.535353: sys_exit_unlink: 0x0
  141. fail2ban-server-2810 [000] 1188445.543341: sys_enter_unlink: pathname: 0x0115441c
  142. fail2ban-server-2810 [000] 1188445.543345: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  143. fail2ban-server-2810 [000] 1188445.543353: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  144. fail2ban-server-2810 [000] 1188445.543372: sys_exit_unlink: 0x0
  145. fail2ban-server-2762 [000] 1188445.549144: sys_enter_unlink: pathname: 0x0115441c
  146. fail2ban-server-2762 [000] 1188445.549148: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  147. fail2ban-server-2762 [000] 1188445.549155: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  148. fail2ban-server-2762 [000] 1188445.549173: sys_exit_unlink: 0x0
  149. fail2ban-server-2793 [000] 1188445.556763: sys_enter_unlink: pathname: 0x0115441c
  150. fail2ban-server-2793 [000] 1188445.556767: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  151. fail2ban-server-2793 [000] 1188445.556775: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  152. fail2ban-server-2793 [000] 1188445.556793: sys_exit_unlink: 0x0
  153. fail2ban-server-2799 [000] 1188445.564478: sys_enter_unlink: pathname: 0x0115441c
  154. fail2ban-server-2799 [000] 1188445.564483: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  155. fail2ban-server-2799 [000] 1188445.564490: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  156. fail2ban-server-2799 [000] 1188445.564508: sys_exit_unlink: 0x0
  157. fail2ban-server-2810 [000] 1188446.407000: sys_enter_unlink: pathname: 0x0115441c
  158. fail2ban-server-2810 [000] 1188446.407010: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  159. fail2ban-server-2810 [000] 1188446.407021: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  160. fail2ban-server-2810 [000] 1188446.407052: sys_exit_unlink: 0x0
  161. fail2ban-server-2793 [000] 1188446.411760: sys_enter_unlink: pathname: 0x0115441c
  162. fail2ban-server-2793 [000] 1188446.411768: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  163. fail2ban-server-2793 [000] 1188446.411779: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  164. fail2ban-server-2793 [000] 1188446.411804: sys_exit_unlink: 0x0
  165. fail2ban-server-2766 [000] 1188446.417902: sys_enter_unlink: pathname: 0x0115441c
  166. fail2ban-server-2766 [000] 1188446.417909: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  167. fail2ban-server-2766 [000] 1188446.417938: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  168. fail2ban-server-2766 [000] 1188446.418128: sys_exit_unlink: 0x0
  169. fail2ban-server-2762 [000] 1188446.426088: sys_enter_unlink: pathname: 0x0115441c
  170. fail2ban-server-2762 [000] 1188446.426097: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  171. fail2ban-server-2762 [000] 1188446.426107: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  172. fail2ban-server-2762 [000] 1188446.426133: sys_exit_unlink: 0x0
  173. fail2ban-server-2799 [000] 1188446.433928: sys_enter_unlink: pathname: 0x0115441c
  174. fail2ban-server-2799 [000] 1188446.433936: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  175. fail2ban-server-2799 [000] 1188446.433951: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  176. fail2ban-server-2799 [000] 1188446.434012: sys_exit_unlink: 0x0
  177. fail2ban-server-2781 [000] 1188446.440884: sys_enter_unlink: pathname: 0x0115441c
  178. fail2ban-server-2781 [000] 1188446.440890: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  179. fail2ban-server-2781 [000] 1188446.440900: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  180. fail2ban-server-2781 [000] 1188446.440922: sys_exit_unlink: 0x0
  181. fail2ban-server-2766 [000] 1188452.847430: sys_enter_unlink: pathname: 0x0115441c
  182. fail2ban-server-2766 [000] 1188452.847451: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  183. fail2ban-server-2766 [000] 1188452.847467: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  184. fail2ban-server-2766 [000] 1188452.847513: sys_exit_unlink: 0x0
  185. fail2ban-server-2793 [000] 1188452.852670: sys_enter_unlink: pathname: 0x0115441c
  186. fail2ban-server-2793 [000] 1188452.852676: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  187. fail2ban-server-2793 [000] 1188452.852684: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  188. fail2ban-server-2793 [000] 1188452.852703: sys_exit_unlink: 0x0
  189. fail2ban-server-2810 [000] 1188452.863198: sys_enter_unlink: pathname: 0x0115441c
  190. fail2ban-server-2810 [000] 1188452.863203: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  191. fail2ban-server-2810 [000] 1188452.863213: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  192. fail2ban-server-2810 [000] 1188452.863239: sys_exit_unlink: 0x0
  193. fail2ban-server-2762 [000] 1188452.869931: sys_enter_unlink: pathname: 0x0115441c
  194. fail2ban-server-2762 [000] 1188452.869945: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  195. fail2ban-server-2762 [000] 1188452.869964: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  196. fail2ban-server-2762 [000] 1188452.870054: sys_exit_unlink: 0x0
  197. fail2ban-server-2781 [000] 1188452.875278: sys_enter_unlink: pathname: 0x0115441c
  198. fail2ban-server-2781 [000] 1188452.875283: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  199. fail2ban-server-2781 [000] 1188452.875292: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  200. fail2ban-server-2781 [000] 1188452.875310: sys_exit_unlink: 0x0
  201. fail2ban-server-2799 [000] 1188452.882567: sys_enter_unlink: pathname: 0x0115441c
  202. fail2ban-server-2799 [000] 1188452.882577: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  203. fail2ban-server-2799 [000] 1188452.882595: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  204. fail2ban-server-2799 [000] 1188452.882633: sys_exit_unlink: 0x0
  205. fail2ban-server-2793 [000] 1188461.211635: sys_enter_unlink: pathname: 0x0115441c
  206. fail2ban-server-2793 [000] 1188461.211664: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  207. fail2ban-server-2793 [000] 1188461.211680: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  208. fail2ban-server-2793 [000] 1188461.211727: sys_exit_unlink: 0x0
  209. fail2ban-server-2766 [000] 1188461.218217: sys_enter_unlink: pathname: 0x0115441c
  210. fail2ban-server-2766 [000] 1188461.218227: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  211. fail2ban-server-2766 [000] 1188461.218244: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  212. fail2ban-server-2766 [000] 1188461.218288: sys_exit_unlink: 0x0
  213. fail2ban-server-2762 [000] 1188461.226318: sys_enter_unlink: pathname: 0x0115441c
  214. fail2ban-server-2762 [000] 1188461.226325: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  215. fail2ban-server-2762 [000] 1188461.226338: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  216. fail2ban-server-2762 [000] 1188461.226367: sys_exit_unlink: 0x0
  217. fail2ban-server-2781 [000] 1188461.235081: sys_enter_unlink: pathname: 0x0115441c
  218. fail2ban-server-2781 [000] 1188461.235086: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  219. fail2ban-server-2781 [000] 1188461.235094: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  220. fail2ban-server-2781 [000] 1188461.235113: sys_exit_unlink: 0x0
  221. fail2ban-server-2810 [000] 1188461.243161: sys_enter_unlink: pathname: 0x0115441c
  222. fail2ban-server-2810 [000] 1188461.243172: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  223. fail2ban-server-2810 [000] 1188461.243180: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  224. fail2ban-server-2810 [000] 1188461.243200: sys_exit_unlink: 0x0
  225. fail2ban-server-2799 [000] 1188461.251457: sys_enter_unlink: pathname: 0x0115441c
  226. fail2ban-server-2799 [000] 1188461.251471: ext4_unlink_enter: dev 253,1 ino 3146 size 3608 parent 210420
  227. fail2ban-server-2799 [000] 1188461.251488: ext4_unlink_exit: dev 253,1 ino 3146 ret 0
  228. fail2ban-server-2799 [000] 1188461.251530: sys_exit_unlink: 0x0
  229. root@vps1:~#
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