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Re: deprecating /usr as a standalone filesystem?



On Thu, May 07, 2009 at 07:27:08PM -0500, Manoj Srivastava wrote:
> On Thu, May 07 2009, Ben Finney wrote:
> 
> > Manoj Srivastava <srivasta@debian.org> writes:
> >
> >> On Thu, May 07 2009, Josselin Mouette wrote:
> >> 
> >> > Le jeudi 07 mai 2009 à 11:02 +1000, Ben Finney a écrit :
> >> >> Those who want a read-only ‘/usr’ don't seriously try to leave it
> >> >> read-only while installing or upgrading packages, do they?
> >> 
> >> ,----[ Excerpt from /etc/apt/apt.conf ]
> >> | DPkg 
> >> | {
> >> |    // Auto re-mounting of a readonly /usr
> >> |    Pre-Invoke  {"mount -o remount,rw /usr";};
> >> |    Post-Invoke {"mount -o remount,ro /usr";};
> >> | };
> >> `----
> >
> > Exactly. So this is *not* “leave /usr read-only while installing or
> > upgrading packages”. Thanks for providing another case in point.
> 
>         No. But we do leave /usr read-only the rest of the time, which
>  is often 99.999% of the time. A separate /usr is required for this.

Uhm, no?

mount --bind /usr /usr

Should do the trick (the same mount -o remount,rw / remount,ro then
applies).  all thanks to the magic of subtrees :)


Regards: David
-- 
 /) David Weinehall <tao@debian.org> /) Rime on my window           (\
//  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~   //  Diamond-white roses of fire //
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