[OpenAFS] Making the R/O preference when crossing mount points configurable

Christof Hanke christof.hanke@rzg.mpg.de
Fri, 10 May 2013 13:05:34 +0200

Hi Arne,

to be honest, I'm unsure what to think of it. I could be worthwhile in some circumstances and create
more confusion in others. But why not?

As for your general problem,
we've set up a special machine called "afsrw", where we mounted a special "root.cell.rw" volume, which has no RO-copies.
Like this, we are always in the RW-Path on that machine and can perform the "make install" into the RO-PATH.



On Thu, 9 May 2013 17:13:48 +0000
Arne Wiebalck <Arne.Wiebalck@cern.ch> wrote:

> Dear list,
> We've patched our AFS client some years ago adding a sysctl parameter that allows to change the R/O preference when crossing mount points. One use case is a software build machine that has to build for the standard /afs/cellname and cannot build into /afs/.cellname.
> While our approach to achieve this via an additional sysctl is debatable (an additional option for afsd was suggested as an alternative), the general idea of making the R/O preference configurable may be interesting for others and their use cases.
> This post is to see if people find the general idea worth adding to openafs, so feedback is welcome.
> Cheers,
>  Arne
> --
> Arne Wiebalck