Re: An interesting PANIC

[Howard Chu <hyc@symas.com>]

Frank Swasey wrote:

> OpenLDAP: 2.2.24
> OS: Red Hat Enterprise Linux AS release 3 (Taroon Update 4)
>
> Problem: bdb(dc=uvm,dc=edu): PANIC: fatal region error detected; run 
> recovery
>
> Somehow a bdb log file got created and owned by root.  Based on the 
> timestamp and the contents of the log, it appears that it happened 
> because the nightly slapcat (which runs as root) did a checkpoint. 
> Either that or it was absolute coincidence that the checkpoint was run 
> at the exact same time (00:17:09) as the slapcat.  Slapd runs as user 
> ldap, so I don't know how slapd would have created the log file owned 
> by root.
>
> Should slapcat be doing checkpoints?  Is this a known problem?  Do I 
> need to change the way the ldap user is defined on the Red Hat system 
> so the slapcat can run as user ldap?

slapcat invokes the usual backend open and close routines, and the 
back-bdb close routine always does a checkpoint before closing its 
environment handle. Perhaps it should skip this call when accessing the 
database in read-only mode.

--
 -- Howard Chu
 Chief Architect, Symas Corp.       Director, Highland Sun
 http://www.symas.com               http://highlandsun.com/hyc
 Symas: Premier OpenSource Development and Support