在Linux中使用mount -bind挂载文件夹。 一个子文件夹显示为空

Question

I successfully mounted one folder on my hard-drive to another location in Linux with the "mount -r --bind locationA locationB" command.

However, one of the subfolders is not mapped to the other location. I do not understand why subfolder 1, 2 and 3 are mapped, but subfolder 4 is not mapped. Subfolder 4 shows up in the directory tree, but the contents are listed as empty.

I don't get any error messages.

What could be the problem?

Thank you for your time.

Answer 1

when you mount a filesystem somewhere else, any filesystems that were mounted to mount points inside the bind-mounted filesystem will not be moved along.

you can use recursive bind mount -
mount -r --rbind locationA locationB