Bug 830348

Summary:	Slow shutdown when you have 100+ replication agreements
Product:	Red Hat Enterprise Linux 6	Reporter:	Nathan Kinder <nkinder>
Component:	389-ds-base	Assignee:	mreynolds
Status:	CLOSED ERRATA	QA Contact:	IDM QE LIST <seceng-idm-qe-list>
Severity:	unspecified	Docs Contact:
Priority:	high
Version:	6.4	CC:	jgalipea, rmeggins, sramling
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	389-ds-base-1.2.11.12-1.el6	Doc Type:	Bug Fix
Doc Text:	Cause: a long sleep in the replication stop code Consequence: with many agmts, the server shutdown would take longer Fix: reduce a sleep interval. Result: faster shutdown	Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-02-21 08:17:49 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Nathan Kinder 2012-06-08 21:43:13 UTC

This bug is created as a clone of upstream ticket:
https://fedorahosted.org/389/ticket/271

I have a 389 DS with 154 replication agreements and in the future I'll 400+. In the current configuration, DS takes 5 minutes to shutdown. If I disable the replication plugin (Multimaster) shutdown takes 3 seconds.

I need the agreements because in my scenario I have two servers in the headquarters of the company with the whole tree and, 150 servers replicating two specific subtrees each one.

Comment 2 RHEL Program Management 2012-07-10 07:10:35 UTC

This request was not resolved in time for the current release.
Red Hat invites you to ask your support representative to
propose this request, if still desired, for consideration in
the next release of Red Hat Enterprise Linux.

Comment 3 RHEL Program Management 2012-07-10 23:00:54 UTC

This request was erroneously removed from consideration in Red Hat Enterprise Linux 6.4, which is currently under development.  This request will be evaluated for inclusion in Red Hat Enterprise Linux 6.4.

Comment 4 Jenny Severance 2012-08-31 19:03:50 UTC

Please add steps to verify  Is it possible to verify this bugzilla without 150 replicas?

Comment 5 Rich Megginson 2012-08-31 19:06:23 UTC

Mark, did you check in a TET test for this issue?

Comment 7 mreynolds 2012-09-06 13:57:21 UTC

I did not add a test suite, as I never tested 100 agmts.  We never got feedback from the customer after creating this fix.  So I do not know if this fix addressed the customer issue.  The fix was to reduce a sleep from 1 second to 100 ms in the repl stop protocol.

Comment 8 Sankar Ramalingam 2012-12-06 13:39:16 UTC

time service dirsrv restart M1 # 100 Replication Agreements
Shutting down dirsrv: 
    M1...[  OK  ]
Starting dirsrv: 
    M1...[  OK  ]

real	0m15.893s
user	0m0.687s
sys	0m0.174s

time service dirsrv restart M1 # 500 Replication Agreements
Shutting down dirsrv: 
    M1...[  OK  ]
Starting dirsrv: 
    M1...[  OK  ]

real	0m59.276s
user	0m0.906s
sys	0m0.273s


With 500 replication agreements, it takes less than a minute to restart the server. Hence, marking the bug as Verified.

Comment 10 errata-xmlrpc 2013-02-21 08:17:49 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2013-0503.html