initdb when data/ folder has mount points

[Ron Johnson]

Hi,

v9.6.6
Apparently, initdb assumes that data/ is one big mount point. However, we 
have four mount points:
/var/lib/pgsql/9.6/data/backup
/var/lib/pgsql/9.6/data/base
/var/lib/pgsql/9.6/data/pg_log
/var/lib/pgsql/9.6/data/pg_xlog

They are all empty.  How do I convince it to ignore the fact that the 
directories exist?

Thanks

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