Stability of unionfs - general recommendation?

Matthias Petermann matthias at
Sun Jun 8 09:22:40 UTC 2014

On Sat, 07 Jun 2014 07:51:45 -0400
Fbsd8 <fbsd8 at> wrote:

> Andrew Berg wrote:
> > On 2014.06.06 03:35, Matthias Petermann wrote:
> >> My internet research yielded some questionable results on the stability of
> >> unionfs. I understood there was an "old" implementation and a "newer" one
> >> introduced in FreeBSD 6.3[1].
> > I asked about this on the doc mailing list (because of the the way the man page
> > is worded) and was told the new unionfs implementation deserves the big scary
> > warning in the man page about as much as the old one. There have also been some
> > recent discussions on IRC with the same general feeling, so I wouldn't trust it.
> > 
> General recommendation is to use nullfs and not unionfs for reasons you 
> all ready found. port sysutils/jail-primer explains it nicely and has 
> scripts you can use.

Thank you both for the advice and recommendation. The Jail primer was useful for

Kind regards,

Matthias Petermann <matthias at> |
GnuPG: 0x5C3E6D75 | 5930 86EF 7965 2BBA 6572  C3D7 7B1D A3C3 5C3E 6D75

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