yum 安裝 iotop 命令使用報錯

近期遇到安裝 iotop 後出現些錯誤：

1. root@BJ-CentOS7 ~ # iotop
2. Traceback (most recent call last):
3. File "/sbin/iotop", line 17, in <module>
4. main()
5. File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 620, in main
6. main_loop()
7. File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 610, in <lambda>
8. main_loop = lambda: run_iotop(options)
9. File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 508, in run_iotop
10. return curses.wrapper(run_iotop_window, options)
11. File "/usr/lib64/python2.7/curses/wrapper.py", line 43, in wrapper
12. return func(stdscr, *args, **kwds)
13. File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 501, in run_iotop_window
14. ui.run()
15. File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 155, in run
16. self.process_list.duration)
17. File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 434, in refresh_display
18. lines = self.get_data()
19. File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 415, in get_data
20. return list(map(format, processes))
21. File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 388, in format
22. cmdline = p.get_cmdline()
23. File "/usr/lib/python2.7/site-packages/iotop/data.py", line 292, in get_cmdline
24. proc_status = parse_proc_pid_status(self.pid)
25. File "/usr/lib/python2.7/site-packages/iotop/data.py", line 196, in parse_proc_pid_status
26. key, value = line.split(':\t', 1)
27. ValueError: need more than 1 value to unpack

解決方案： 修改 /usr/lib/python2.7/site-packages/iotop/data.py 文件：

1. root@BJ-CentOS7 ~ # vim /usr/lib/python2.7/site-packages/iotop/data.py
2. def parse_proc_pid_status(pid):
3. result_dict = {}
4. try:
5. for line in open('/proc/%d/status' % pid):
6. key, value = line.split(':\t', 1)
7. result_dict[key] = value.strip()
8. except IOError:
9. pass # No such process
10. return result_dict

定位至 /usr/lib/python2.7/site-packages/iotop/data.py 文件196行，修改爲如下內容保存，重新運行iotop命令恢復正常：

1. def parse_proc_pid_status(pid):
2. result_dict = {}
3. try:
4. for line in open('/proc/%d/status' % pid):
5. try:
6. key, value = line.split(':\t', 1)
7. except:
8. break
9. result_dict[key] = value.strip()
10. except IOError:
11. pass # No such process
12. return result_dict