mount 返回非零退出代码 64

Question

在生产系统（Centos 7）上运行“mount -a”时，我得到返回代码 64

try:

    subprocess.check_call(["mount", "-a"])

except subprocess.CalledProcessError as e:

    raise Exception("Failed to run mount command. error:%s", str(e))

以下是日志：

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

这意味着某些文件系统无法挂载，但其他文件系统成功。返回代码 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).