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Re: (ITS#4088) hdb deadlock between syncrepl/slapcat
> Aaron Richton wrote:
>>> Unfortunately BDB doesn't record process or thread IDs with locker IDs
>>> so there's no quick way to find the culprit.
>> Well, I was able to repro this:
>> 0. pkill slapd
>> 1. rm [dataDir]/*db*
>> 2. slapd
>> [...now syncrepl has a lot of work to do...]
>> 3. while sleep 2;slapcat;done &
>> I can think of no rationale why/how one of the slapcats would have
>> experienced any sort of abnormal termination.
>> Does LDAP_DEVEL/-d -1/etc. have sufficient information on lock ids to
>> track this down? Alternately, I can throw a debugger watchpoint, if you
>> think that might help.
I've committed a potential fix to HEAD. It makes sure that slapcat won't
have two id2entry cursors open at once. However, it will have an
id2entry and a dn2id cursor both open at once, and there's no avoiding
that. Please let me know if this behaves any better for you.
-- Howard Chu
Chief Architect, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc
OpenLDAP Core Team http://www.openldap.org/project/