Linux Bind mount issues.

Hi All,

we have an issue in bind mounting LINUX.

we are able to see the bound mounts in mount command and
df -h <file system name> but they are not visible in normal df -h command.
all these mounts are local mounts.

we have a /xyz is mount and abc is a directory in /xyz ( /xyz/abc )
 we would like to mount /xyz/abc  to /app/abc.
 

please help me if it is related to OS related issue.

we are using Red Hat Enterprise Linux Server release 6.4 (Santiago)

By default df alone do not show dummy filesystem.
Use df -ah to show those.