mount returns 非零退出代码 64

Question

当运行在生产系统 (Centos 7) 上“mount -a”时，我得到 return 代码 64

try:
    subprocess.check_call(["mount", "-a"])
except subprocess.CalledProcessError as e:
    raise Exception("Failed to run mount command. error:%s", str(e))

以下为日志：

raise Exception("Failed to run mount command. error:%s", str(e))
Exception: ('Failed to run mount command. error:%s', "Command '['mount', '-a']' returned non-zero exit status 64")

退出代码 64 是什么意思？

Answer 1

这意味着一些文件系统挂载失败但其他文件系统挂载成功。

来自mount(8) manual：

RETURN 代码

   mount has the following return codes (the bits can be ORed):

   0      success

   1      incorrect invocation or permissions

   2      system error (out of memory, cannot fork, no more loop devices)

   4      internal mount bug

   8      user interrupt

   16     problems writing or locking /etc/mtab

   32     mount failure

   64     some mount succeeded

   The command mount -a returns 0 (all succeeded), 32 (all failed), or 64 (some failed,  some
   succeeded).

mount returns 非零退出代码 64

mount returns non-zero exit code 64

python

subprocess

centos

centos7

RETURN 代码