nullfs and chroot

[=?x-unknown?q?R=FCffy_v=F8n_W=FCnd=E9rh=FBn=D0?= <ruffy_(_at_)_dawghaus_(_dot_)_org>]

Anyone know of any problems with the following filesystem setup:

from /etc/fstab:

	/dev/sd0d /usr ffs rw 1 2
	/usr/jail /jail null ro,nosuid 0 0

such that /jail is a read-only version of the writable /usr/jail, into
which a webserver, FTP server, etc. are chroot'd?

Loopback nullfs mounts of NFS data are unreliable (cause corruption), but
I haven't seen any problems with FFS so far?

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