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From: Matthijs Mohlmann <[EMAIL PROTECTED]>
To: Debian Bug Tracking System <[EMAIL PROTECTED]>
Subject: slapd: Index and Data corruption with openldap2 2.1.30
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Date: Thu, 20 Jan 2005 17:16:48 +0100
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Package: slapd
Version: 2.1.30-3
Severity: critical
Justification: causes serious data loss

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Hi,

We are running debian sarge on some of our servers now and are getting
data and index corruption (every few weeks). On different servers
(configured the same) we experience those problems. I think it is
openldap that causes this problem because openldap 2.2 doesn't have this
problems with the same bdb backend. (db4.2)

We only use this option in DB_CONFIG but i think it doesn't have
anything to do with the problem:
set_cachesize   0       52428800        0

I've searched the logs for any inconsistency but i couldn't find anything
in the logs.

Another little problem i experienced is the bad performance with 2.1.30
i've benched 2.1.30 and 2.2.20 a little bit and i got this:
On the server (openldap 2.1.30):
IBM eServer series: 1 Ghz with 1.5 Gb RAM (Kernel: 2.6.8)
www0:~# time id user_from_ldap
uid=1003(user_from_ldap) gid=1003(user_from_ldap) groups=1003(user_from_ldap)

real    0m1.588s
user    0m0.059s
sys     0m0.017s

the real is between the 1.4 to 1.8 seconds.

Desktop system (openldap 2.2.20)
Pentium 2 350Mhz with 192Mb RAM (Kernel: 2.6.8)
desktop:~# time id user_from_ldap

real    0m0.388s
user    0m0.059s
sys     0m0.017s

The real on this one is between 0.2 and 0.4 seconds.

On both machines ldap is running on localhost.

I've now a few weeks openldap 2.2 running on my desktop system and i
didn't get any data or index corruption and it's fast as hell.

I've seen that the main blocker is the gnutls patch. Well i ported the
patch almost to 2.2.20. There are a few things i have to look for. And
then i hope it will work. I don't know how far you are with that patch
but i hope, really hope that 2.2.20 can make it into Sarge.

If you need more information please mail me.

Regards,

Matthijs Mohlmann


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Date: Sat, 16 Apr 2005 03:00:09 -0700
From: Steve Langasek <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: Re: [fixed in 2.2.23] database corruption
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As slapd 2.2.23 has now slipped into testing (which was eventually our
intention anyway), this particular bug is presumably fixed; there are other
new ones that need to be dealt with, but none that any longer match this
description.

Cheers,
--=20
Steve Langasek
postmodern programmer

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