On Thu, Apr 30, 2015 at 11:42:24PM +0200, Didier Kryn wrote:
>
> Le 30/04/2015 20:16, John Morris a écrit :
> >The FHS was carefully designed to accomodate things like NFS root,
> >readonly NFS mounting of parts of the system, mandating things like
> >*/share/ to only contain arch neutral data, etc.
>
> The whole FH can be shared by NFS root, except /var, which
> cannot be shared entirely and /run (formerly /var/run) which cannot
> be shared at all - talking about Debian's FH.
>
> The problem is /var/lib which must be carefully separated in two
> parts to distinguish applications which keep common data (eg apt)
> and applications which keep hardware-related data (eg ntpd). Then a
> few dirty tricks are necessary to make the two categories look like
> they are all in /var/lib.
>
> I don't know if the question of sharing the FH through NFS is
> seriously addressed by the FHS; but, if it is, it fails.
>
> Didier
Years ago I heard that /usr could be mounted read-only, and even shared
between different running copies of Linux by an NFS mount.
But I've never seen a distro that took this seriously enough that a
routine upgrade (with something like aptitude upgrade) would work.
-- hendrik
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