CentOS上的iotop命令出错

Question

在新安装的sudo iotop 7.5中的终端中使用0.6-2.el7(最新版本D1)时，会收到以下错误消息：

Traceback (most recent call last):
  File "/sbin/iotop", line 17, in 
    main()
  File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 620, in main
    main_loop()
  File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 610, in 
    main_loop = lambda: run_iotop(options)
  File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 508, in run_iotop
    return curses.wrapper(run_iotop_window, options)
  File "/usr/lib64/python2.7/curses/wrapper.py", line 43, in wrapper
    return func(stdscr, *args, **kwds)
  File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 501, in run_iotop_window
    ui.run()
  File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 155, in run
    self.process_list.duration)
  File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 434, in refresh_display
    lines = self.get_data()
  File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 415, in get_data
    return list(map(format, processes))
  File "/usr/lib/python2.7/site-packages/iotop/ui.py", line 388, in format
    cmdline = p.get_cmdline()
  File "/usr/lib/python2.7/site-packages/iotop/data.py", line 292, in get_cmdline
    proc_status = parse_proc_pid_status(self.pid)
  File "/usr/lib/python2.7/site-packages/iotop/data.py", line 196, in parse_proc_pid_status
    key, value = line.split(':\t', 1)
ValueError: need more than 1 value to unpack

Any知道如何解决这个问题吗？

Answer 1

显然，最近的内核版本在/proc/(pid)/status中引入了iotop不期望的空行：

CapBnd: 0000001fffffffff
CapAmb: 0000000000000000
Seccomp:    0

SpeculationStoreBypass: vulnerable

作为补丁的零近似，编辑(作为根) /usr/lib/python2.7/site-packages/iotop/data.py约为1.195：

def parse_proc_pid_status(pid):
    result_dict = {}
    try:
        for line in open('/proc/%d/status' % pid):
            if not line.strip(): continue
            key, value = line.split(':\t', 1)
            result_dict[key] = value.strip()
    except IOError:
        pass  # No such process

    return result_dict

其中的if not line.strip(): continue是新的。请注意python没有显式的大括号，因此该行的缩进应该与它下面的行相匹配。

(有关此bug的其他修补程序，请参见https://bugs.launchpad.net/pkg-website/+bug/1773383。)

Answer 2

只是为了补充接受的答案(不能添加为注释，因为它们不允许多个空格)

1. 搜索Python脚本的文件路径

sudo find ./usr/lib | grep iotop/data.py

1. 用sed替换

sed -i '1n;/key, value = line/i\            if not line.strip(): continue' 

小心，第一次运行时检查一切正常。

对于我的系统来说，它是：

sudo sed -i '1n;/key, value = line/i\            if not line.strip(): continue' /usr/lib/python2.7/dist-packages/iotop/data.py