Re: OpenLDAP 2.2 and db4 under RHEL4 on Xen 3.0

[Quanah Gibson-Mount <quanah@stanford.edu>]

--On Saturday, March 18, 2006 8:05 PM -0700 Michael Torrie 
<torriem@chem.byu.edu> wrote:

> On Sat, 2006-03-18 at 09:31 +0100, Howard Chu wrote:
> > This sounds like a question for the comp.databases.berkeley-db
> > newsgroup. Or, perhaps for a Xen mailing list. It is entirely possible
> > that Xen does not implement the instructions needed for the
> > assembly-language mutex support.
>
> Yes this is the problem.  Xen doesn't support  this assembly-language
> mutex nor does it support the nptl glibc (and bdb).  So far it has been
> discussed on the Xen mailing list but no solution has been found.  I
> guess running OpenLDAP on xen is not that common yet so no one has any
> real good advice for building bdb.
>
> RedHat has a bug report on this issue but it is marked "Won't fix" since
> RHEL is not supported on any non-NPTL architecture, which is kind of
> ironic since RHEL is throwing their weight behind xen which currently is
> a non-NPTL architecture.  I'll try an older version of db4 from RHEL3
> compiled without nptl support and see if I have any luck.  If not, I'll
> degrade to an dbm backend.  I'm sure Redhat will address this issue in
> RHEL5 (which will ship with xen 3.0).

I'm assuming by a "dbm" backend, you mean ldbm.  Of course, ldbm is not 
recommended for use, because of its many problems.  Honestly, if you are 
looking to run a directory service, I would highly advise you dump Xen, and 
use something where BDB is supported (and I'd suggest running OpenLDAP 
2.3.20 (or higher, if newer releases have been made by the time you get to 
it)).

--Quanah



--
Quanah Gibson-Mount
Principal Software Developer
ITS/Shared Application Services
Stanford University
GnuPG Public Key: http://www.stanford.edu/~quanah/pgp.html