RE: RE : (ITS#6720) back-ldap core dump

Monday, 29 November 2010

Thank's for your time,

the write can't be stop, i have to reinstall all the replica , and my plann=
ing, for the second step, take 3 months ...

Regards,

Olivier

-----Message d'origine-----
De=A0: Pierangelo Masarati [mailto:masarati@aero.polimi.it]=20
Envoy=E9=A0: lundi 29 novembre 2010 15:21
=C0=A0: CHIROSSEL, Olivier
Cc=A0: openldap-its(a)openldap.org
Objet=A0: Re: RE : (ITS#6720) back-ldap core dump

olivier.chirossel(a)sfr.com wrote:

...
 Thank's for you reply,
=20
 you can get a tar file containing a simple case which reproduce the probl= em=3D
...
  here ( i don't put rewriting rules in proxy conf, just strip of 
operati= on=3D
...
 nal  attribut )
=20
 wget http://olivier:its6720@84.103.237.12/its6720.tar
=20
=20
 the lance.sh inititialise the tests=3D20
 (the slapd suppose to be in /usr/local/libexec)
=20
 and you reproduce it with the command :
=20
 ldapmodify -D "cn=3D3Dmanager,dc=3D3Dneuf,dc=3D3Dfr" -H "ldap://127.0.0.1=
:489"  -=3D
...
 w secret -f mod
=20
 i try to explain you my need=3D20
=20
 1) For the moment i have a master in 2.3.x with many replica in 2.3.x wit= h =3D
...
 slurpd replication
=20
 2) my goal is to migrate to a mirror mode master infrastructure with sync= re=3D
...
 pl replication
=20
 3) the first step is to install my mirror mode infrastructure and replica= te=3D
...
  with slurpd from my old master.
=20
 4) second step re install replica one by one with syncrepl replication to=  m=3D
...
 y new mirror mode infrastructure
=20
 5) third step write directly to my mirror mode infrastructure
=20
 For the first step i put a proxy ldap between my old master and my mirror=  m=3D
...
 ode infrastructure to do rewrite rules and strip operationnal
attribut (i=  n=3D
...
 eed, at the end,  have a new clean infrastructure with entryCSN
contains = th=3D
...
 e ServerId of my new master, for checks the replcation status between
my = ma=3D
...
 ster and between my replica and my mirror mode architcture)
 =3D20
 The ldapmodify command reproduce the replication operations which highlig= ht=3D
...
   the problem..
=20
 PS:=3DA0before strip attribute with rwm-map directives i try to put "last= mod
=3D
...
 off" in proxy ldap configuration without success ... 
Thanks for the report.  I've reproduced the bug; it appears to be inside=20
slapo-rwm(5).  The core dump is related to a double free, which I'm=20
trying to track.

In any case, since as far as I understand the only reason you need=20
slapo-rwm(5) is to modify data during the migration, you should probably=20
do it offline, after exporting your data and before importing in the new=20
system.

p.

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