union file system

["Trevor R.H. Clarke" <retrev_(_at_)_csh_(_dot_)_rit_(_dot_)_edu>]

If the write mount of a union(the part mounted over)fills, will OpenBSD try to
write to the other mount? I want to have an mfs mounted on /tmp for quick tmp
space but if this fills up I want the OS to write to my hard drive(/
partition)until space frees up on the mfs. Is this possible?
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Trevor R.H. Clarke                     Computer Science House
Rochester Institute of Technology      Systems Programmer for ISC
retrev_(_at_)_csh_(_dot_)_rit_(_dot_)_edu                     trcsys_(_at_)_rit_(_dot_)_edu
http://www.csh.rit.edu/~retrev/        finger retrev_(_at_)_csh_(_dot_)_rit_(_dot_)_edu for PGP key