Re: back-meta hangs

[Pierangelo Masarati <ando@sys-net.it>]

Sébastien Georget wrote:

> Hi,
>
> back-meta (with openldap 2.2.20) hangs in the following configuration, 
> does anybody understand why ?
> Every hours some threads seem to hang resulting in many "deferring 
> operation" messages in the logs. If I hit <ctrl-c> in debug mode it 
> starts to exit then stop waiting for some threads to terminate.
>
> ====
> # local db1
> database        bdb
> suffix          "o=A,dc=domain"
>
> # local db2
> database        bdb
> suffix          "o=B,dc=domain"
>
> # Virtual
> database        meta
> suffix          "dc=domain"
> uri             "ldap://127.0.0.1/o=A,dc=domain";
> uri             "ldap://127.0.0.1/o=B,dc=domain";
> ====


Do you mean it always hangs, or just every now and then?  I've been able 
to successfully test the setup you presented above.  In any case, I'd 
guess attaching the process with a debugger, and showing the stack 
backtrace of all threads could help.

> If I run two slapd servers (one with the bdbs and the other with the 
> meta) there are no problems.

This is the intended usage; if all databases reside on the same server 
and you don't need to rewrite or do some fancy stuff, I suggest you 
create a third bdb instance rooted at "dc=domain", and glue the three 
together using the "subordinate" qualifier in the two subordinate databases.

p.





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