Documentation/filesystems/sharedsubtree.rst

42    Let's say /mnt has a mount that is shared::
44      # mount --make-shared /mnt
53      # mount --bind /mnt /tmp
55    The above command replicates the mount at /mnt to the mountpoint /tmp
60      #ls /mnt
73      # ls /mnt/a
76    Note that the mount has propagated to the mount at /mnt as well.
78    And the same is true even when /dev/sd0 is mounted on /mnt/a. The
89    Let's say /mnt has a mount which is shared::
91      # mount --make-shared /mnt
93    Let's bind mount /mnt to /tmp::
95      # mount --bind /mnt /tmp
98    the mount at /mnt.
100    Now let's make the mount at /tmp; a slave of /mnt::
104    let's mount /dev/sd0 on /mnt/a::
106      # mount /dev/sd0 /mnt/a
108      # ls /mnt/a
124      # ls /mnt/b
127    /mnt
138    let's say we have a mount at /mnt and we make it unbindable::
140      # mount --make-unbindable /mnt
144      # mount --bind /mnt /tmp mount: wrong fs type, bad option, bad
145      superblock on /mnt, or too many mounted file systems
267          mount --make-shared /mnt
268          mount --bind /mnt /tmp
270        The mount at /mnt and that at /tmp are both shared and belong
272        /mnt or /tmp reflect in all the other mounts of its peer
618        mount --bind /mnt /mnt
619        mount --make-shared /mnt
620        mount --bind /mnt /tmp
621        mount --move /tmp /mnt/1
623    what should be the contents of /mnt /mnt/1 /mnt/1/1 should be?
624    Should they all be identical? or should /mnt and /mnt/1 be
643        mount --bind /mnt /mnt
644        mount --make-shared /mnt
645        mkdir -p /mnt/1/2/3 /mnt/1/test
646        mount --bind /mnt/1 /tmp
647        mount --make-slave /mnt
648        mount --make-shared /mnt
649        mount --bind /mnt/1/2 /tmp1
650        mount --make-slave /mnt
656    Next we have a third mount at /mnt with root dentry
657    mnt. Let's call this mount 'C'
671    /mnt/1/test be?