[PATCH] LMDB full patch set

Andrew Bartlett abartlet at samba.org
Tue May 15 04:50:21 UTC 2018

On Mon, 2018-05-14 at 08:02 +0200, Stefan Metzmacher via samba-
technical wrote:
> Am 14.05.2018 um 06:59 schrieb Andrew Bartlett via samba-technical:
> > On Fri, 2018-05-11 at 20:07 +0200, Stefan Metzmacher wrote:
> > > If it would be optional for sometime and it would actually work
> > > it would be much easier to agree to push it to master.
> > 
> > I've made it optional.  Builds of ldb and Samba have a --without-ldb-
> > lmdb option.  Builds --without-ad-dc do not enable lmdb, and only AD DC
> > sefltest builds require it.
> > 
> > Otherwise, the only other restriction is that 'make test' on ldb is
> > incompatible with --without-ldb-lmdb.  This pre-empts the 'tests gone
> > missing' issue.   Both the python and the cmocka tests require lmdb, so
> > it is clearer to just require it.
> > 
> > The ad_dc and vampire_dc environments in Samba's selftest now use 
> > --backend-store=mdb
> > 
> > autobuild confirms that ldb will compile --without-ldb-lmdb
> > 
> > If an AD DC build is made against a system ldb without lmdb support,
> > some tests will fail.  
> > 
> > https://gitlab.com/catalyst-samba/samba/pipelines/21959419
> > https://gitlab.com/catalyst-samba/samba/commits/metze-master4-lmdb-full
> > 
> > Finally, an ldb make test passes on all the ldb_mdb commits. 
> > 
> > Please review and push ;-)
> Thanks! I'll have a look later.

I've reworked the patches to hook this up to the join etc, and the new
pipeline is here:


> In the meantime can you please try a private autobuild on sn-devel-144?

I ran one, it may be due to the number of other autobuilds being run by
the same user as the ldb tests passed previously but failed now.  

(So while they all failed, some failed with a different flapping test,
well past the ldb tests). 

Are there unusual limits on mmap() areas on that host?

In the meantime I've updated the error message and dropped the size to
8GB for now.  Having this be a relatively fixed number just for sn-
devel is not ideal however. 


Andrew Bartlett

Andrew Bartlett
Authentication Developer, Samba Team         https://samba.org
Samba Development and Support, Catalyst IT   

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