Subject: Re: lfs and union fs
To: Joseph Sarkes <email@example.com>
From: Jim Bernard <firstname.lastname@example.org>
Date: 06/10/2001 10:32:39
On Fri, Jun 08, 2001 at 10:10:10AM -0400, Joseph Sarkes wrote:
> I also recall various problems in the further past with
> the union filesystem. Is union filesystem stable enough
> now to have a read only source tree?
I've been doing builds this way for about 6 years. It works very well.
There has recently been breakage if the lower layer is on NFS but with FFS
it works fine. It's possible that that problem has been fixed---I haven't
tried it lately.
> If only under certain conditions, what are they? I remember
> being able to blow it up (union fs) by some method that I
> don't recall at this particular moment.
There was a potential for a crash if you modified the lower layer while
the upper layer was active (e.g., during a build). I don't really know if
that has been fixed, but since it wouldn't make sense to be updating your
source tree while building in the upper layer, it's not much of a limitation.