Fix verified.
-------- Original Message -------- Subject: RE: truncated slapcat output Date: Thu, 11 Apr 2013 07:15:17 +0000 From: Hummel, Wolfgang wolfgang.hummel@hp.com To: Howard Chu hyc@symas.com
Hello Howard,
we tested your fix for truncated slapcat and it works fine. Please see test report below. As I am not familiar with your processes in commenting on bugfixes could you use the attached test report and commit the fix so it will become part of next release ?
Thanks a lot for your support
Regards
Wolfgang Hummel
Test execution timeframe: April 9th and 10th 2013
Test platform: Hardware HP DL380 G5, 32 GB Memory, 2 Quadcore CPUs OS RedHat 5.1 OpenLDAP 2.4.32 without / with slapcat truncate bugfix bdb backend
Test setup: - Subscriber profile DB with 1 Mio. entries, each with 10 attributes
Test execution: - ldapbenchmark.pl executing ~ 5 ldapmodifies and ~ 2 ldapsearches / second - slapcat_vfhu_vm_profiles.sh running slapcat in a cycle and counting entries
Test result without slapcat truncate bugfix: - 1826 measurements of entry number - 23 events with truncated slapcat output - slapcat return code was always 0 !
Test result with slapcat truncate bugfix: - 1647 measurements of entry number - 0 events with truncated slapcat output
script to measure it: #!/bin/bash # run slapcat forever and always count number of entries # they should always be the same while : do slapcat -b ou=vm,ou=profiles,ou=xxxx,c=hu,o=yyyy|grep "^dn:"|wc -l
vfhu_vm_entries.txt
echo "Slapcat Return Code: $?; `date`">>vfhu_vm_entries.txt sleep 1 done
log snippet with bug fix: Slapcat Return Code: 0; Wed Apr 10 22:12:42 CEST 2013 1000001 Slapcat Return Code: 0; Wed Apr 10 22:13:05 CEST 2013 1000001 Slapcat Return Code: 0; Wed Apr 10 22:13:28 CEST 2013 1000001 Slapcat Return Code: 0; Wed Apr 10 22:13:52 CEST 2013 1000001 Slapcat Return Code: 0; Wed Apr 10 22:14:16 CEST 2013 1000001
log snippet without bugfix: 1000001 Slapcat Return Code: 0; Wed Apr 10 01:01:45 CEST 2013 319284 Slapcat Return Code: 0; Wed Apr 10 01:02:07 CEST 2013 1000001 Slapcat Return Code: 0; Wed Apr 10 01:03:15 CEST 2013 1000001 Slapcat Return Code: 0; Wed Apr 10 01:03:42 CEST 2013 1000001 Slapcat Return Code: 0; Wed Apr 10 01:04:09 CEST 2013 1000001 Slapcat Return Code: 0; Wed Apr 10 01:04:37 CEST 2013 1000001 Slapcat Return Code: 0; Wed Apr 10 01:05:04 CEST 2013 437990 Slapcat Return Code: 0; Wed Apr 10 01:05:16 CEST 2013 146790 Slapcat Return Code: 0; Wed Apr 10 01:05:21 CEST 2013 72688 Slapcat Return Code: 0; Wed Apr 10 01:05:25 CEST 2013 1000001 Slapcat Return Code: 0; Wed Apr 10 01:05:50 CEST 2013
-----Original Message----- From: Howard Chu [mailto:hyc@symas.com] Sent: Dienstag, 26. März 2013 18:09 To: Hummel, Wolfgang Subject: Re: truncated slapcat output
Hummel, Wolfgang wrote:
Hello Howard,
we are facing in production of our major customer VF the same problems as described in
http://www.openldap.org/lists/openldap-technical/201301/msg00232.html
We are using back-bdb and slapcat to create nightly ldif backups of all DBs
where 2 of them each contains ~ 40 Mio. entries.
Even though write traffic is low when the slapcat job runs, every 1 - 2 weeks
output is truncated without error msg or error return code which creates problems
for subsequent batch jobs.
Therefore a slapcat that retries like slapd if a page is locked would be
really important for us.
2 Questions:
- Is the slapcat retry mechanism the fix you described in
http://www.openldap.org/lists/openldap-technical/201301/msg00232.html ?
The patch for ITS#6365 was committed to master commit 853b9d1335d27e280751e9cfb8ca6b5356ffec73 Author: Howard Chu hyc@openldap.org Date: Thu Feb 7 18:23:25 2013 +0000
ITS#6365 wait for read locks in tool mode
- When will it be available in OpenLDAP ?
When somebody follows up to the ITS and confirms that the patch fixes the issue. So far nobody has followed up. You're welcome to test and followup.
Regards
Wolfgang Hummel
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