标题: man 8 mount_unionfs的疑问 [打印本页] 作者: 剑心通明 时间: 2006-04-27 10:22 标题: man 8 mount_unionfs的疑问 Q1：
Filenames are looked up in the upper layer and then in the lower layer.
If a directory is found in the lower layer, and there is no entry in the
upper layer, then a shadow directory will be created in the upper layer.
It will be owned by the user who originally did the union mount, with
mode ``rwxrwxrwx'' (0777) modified by the umask in effect at that time.
这个怎么测试？怎么我在lower layer下建的目录，在upper layer都能看到啊？
Q2：
If a file exists in the upper layer then there is no way to access a file
with the same name in the lower layer. If necessary, a combination of
loopback and union mounts can be made which will still allow the lower
files to be accessed by a different pathname.