Re: (ITS#8360) apparent MDB corruption when hitting maxsize

[hyc@symas.com]

peter.van.dijk@powerdns.com wrote:
> Full_Name: Peter van Dijk
> Version: 2.4.43
> OS: Mac OS X 10.10.5
> URL: ftp://ftp.openldap.org/incoming/
> Submission from: (NULL) (2001:610:666:0:c92b:7aa7:bc73:c430)
>
>
> The procedure follow is fully repeatable with consistent problematic results for
> me.

Unable to reproduce this on Linux using RE24.

> (1) ftp://ftp.openldap.org/pub/OpenLDAP/openldap-release/openldap-2.4.43.tgz,
> installed via osx homebrew with configure flags
> --prefix=/usr/local/Cellar/openlp%p/2.4.43 --sysconfdir=/usr/local/etc
> --localstatedir=/usr/local/var
>
> (2) config and related files as uploaded on the given URL (cosine.schema is
> unedited but included for completeness)
>
> (3) /usr/local/var/openldap-data/ is empty
>
> (4) sudo /usr/local/opt/openldap/libexec/slapd -d 255 -u peter 2> slapd.log
>
> (5) ldapmodify -D 'uid=peter,o=habbie' -w secret -c < named.conf.ldif  2>
> ldapmodify.log ; ldapdelete -D 'uid=peter,o=habbie' -w secret -r ou=dns,o=habbie
> 2> ldapdelete.log
> modify is unhappy, initially because of some unknown attributes (thish is why I
> used -c), then later because it is hitting the MDB maxsize of 10 megabytes.
> ldapdelete then fails to delete the ou=dns tree due to MDB errors
>
> (6) increasing maxsize after this 'corruption' has happened does NOT enable
> ldapdelete to suddenly work

ldapdelete works fine for me after raising maxsize.
>
> (7) (with slapd stopped, not sure it matters): $
> /usr/local/opt/openldap/sbin/slapcat outputs 191771 lines to stdout before
> aborting with:
> 56a63063 mdb_entry_decode: attribute index 24 not recognized
> Segmentation fault: 11

Never saw this, slapcat runs to completion with no complaints.

-- 
   -- Howard Chu
   CTO, Symas Corp.           http://www.symas.com
   Director, Highland Sun     http://highlandsun.com/hyc/
   Chief Architect, OpenLDAP  http://www.openldap.org/project/