SVN working copy split DB vs. working area

Folks:

I've now seen a request for this twice in as many days. Once from
a customer and once from someone posting to a Subversion forum
here:

https://www.svnforum.org/forum/opensource-subversion-forums/apache-subversion-1-8-support/80218-subversion-checkout-on-distrubuted-filesytem

The general setup is that they want to have a working copy on a
Distributed File System (DFS, e.g. Lustre) and the DFS either is
very slow (when mounted with sufficient support for SQLite) or just
does not work due to a lack of support for SQLite - likely locking).

One set of folks want to accelerate by doing parallel checkouts the
way they could do using SVN 1.6 (prior to the consolidated ".svn"
tree). But SQLite locking will prevent that (unless I'm missing
something).

Another set of folks is ok for having the ".svn" area on a local
file system (e.g. ext4) but want the rest of the working copy out
there on the DFS.

NOTE: both sets of folks are experienced SVN users. Both know and
have rejected "exporting" - they want a working copy.

Has this subject come up before? Is there a way to link a ".svn"
area to the rest of the working copy? In other words, keeping the
housekeeping area separate/split from the rest of the working copy?

Thoughts?

Cheers.

Doug

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