用gem5img.py卸载目录时Permission denied: '/run/user/112/gvfs'-优快云博客

使用gem5img.py卸载挂载目录mnt/时遇到'Permission denied'错误，通过运行umount -a命令卸载所有挂载点，以便成功卸载mnt/。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

用gem5img.py可以创建img disk文件，在前面有介绍，创建完之后，要用到这个脚本来卸载之前挂载上去的目录mnt/，结果报了下面的错误：

zzh@ubuntu14:~/gem5/workspace$ sudo ~/gem5/util/gem5img.py umount mnt/
Traceback (most recent call last):
  File "/home/zzh/gem5/util/gem5img.py", line 372, in <module>
    command.runCom()
  File "/home/zzh/gem5/util/gem5img.py", line 200, in runCom
    self.func(self.options, self.args)
  File "/home/zzh/gem5/util/gem5img.py", line 242, in umountComFunc
    dev = mountPointToDev(mountPoint)
  File "/home/zzh/gem5/util/gem5img.py", line 158, in mountPointToDev
    if os.path.samefile(chunks[2], mountPoint):
  File "/usr/lib/python2.7/posixpath.py", line 162, in samefile
    s1 = os.stat(f1)
OSError: [Errno 13] Permission denied: '/run/user/112/gvfs'

解决方案：

zzh@ubuntu14:~/gem5/workspace$ sudo lsof +D mnt/

输出下面的内容：

lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/112/gvfs
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1005/gvfs
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1002/gvfs
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1006/gvfs
      Output information may be incomplete.

将上面出现的全部都umount掉

zzh@ubuntu14:~/gem5/workspace$ sudo umount /run/user/1006/gvfs
zzh@ubuntu14:~/gem5/workspace$ sudo umount /run/user/1002/gvfs
zzh@ubuntu14:~/gem5/workspace$ sudo umount /run/user/1005/gvfs
zzh@ubuntu14:~/gem5/workspace$ sudo umount /run/user/112/gvfs

这样，接下来就可以正常umount掉mnt/了

zzh@ubuntu14:~/gem5/workspace$ sudo ~/gem5/util/gem5img.py umount mnt/

%> /bin/umount mnt/
%> /sbin/losetup -d /dev/loop2