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Bug 1440654 - Possible deadlock while installing an ipa replica.
Summary: Possible deadlock while installing an ipa replica.
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: 389-ds-base
Version: 7.3
Hardware: All
OS: Linux
urgent
urgent
Target Milestone: rc
: ---
Assignee: mreynolds
QA Contact: Viktor Ashirov
Marc Muehlfeld
URL:
Whiteboard:
Depends On: 1432016
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-04-10 08:12 UTC by Jaroslav Reznik
Modified: 2020-08-13 09:02 UTC (History)
11 users (show)

Fixed In Version: 389-ds-base-1.3.5.10-21.el7_3
Doc Type: Bug Fix
Doc Text:
The replica data structure is protected by a lock. Previously, if the first direct update on the server failed, a thread that acquired the lock did not released it. Consequently, the server could no longer use the replica data structure and further read and write requests hung. A patch has been applied to release the lock in the mentioned scenario. As a result, the server now works correctly if the first direct update failed.
Clone Of: 1432016
Environment:
Last Closed: 2017-05-25 15:52:46 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2017:1313 0 normal SHIPPED_LIVE 389-ds-base bug fix update 2017-05-25 19:33:45 UTC

Description Jaroslav Reznik 2017-04-10 08:12:33 UTC 
This bug has been copied from bug #1432016 and has been proposed
to be backported to 7.3 z-stream (EUS).
Comment 5 Simon Pichugin 2017-05-09 15:51:54 UTC 
Build tested:
389-ds-base-1.3.5.10-21.el7_3.x86_64
ipa-server-4.4.0-14.el7_3.7.x86_64


Verification steps:
1. Install IPA server on one machine
2. Install IPA replica on another machine.
ipa-replica-install should be successful:
[root@vm-idm-003 ~]# ipa-replica-install
WARNING: conflicting time&date synchronization service 'chronyd' will
be disabled in favor of ntpd

Password for admin.BOS.REDHAT.COM:
Run connection check to master
Connection check OK

[...]

Upgrading IPA:
  [1/9]: stopping directory server
  [2/9]: saving configuration
  [3/9]: disabling listeners
  [4/9]: enabling DS global lock
  [5/9]: starting directory server
  [6/9]: upgrading server
  [7/9]: stopping directory server
  [8/9]: restoring configuration
  [9/9]: starting directory server
Done.
Configuring ipa-otpd
  [1/2]: starting ipa-otpd
  [2/2]: configuring ipa-otpd to start on boot
Done configuring ipa-otpd.

3. Check ipa.service status:
[root@qe-blade-13 ~]# service ipa status
Redirecting to /bin/systemctl status  ipa.service
● ipa.service - Identity, Policy, Audit
   Loaded: loaded (/usr/lib/systemd/system/ipa.service; enabled; vendor preset: disabled)
   Active: active (exited) since Tue 2017-05-09 11:47:01 EDT; 2min 11s ago
  Process: 31320 ExecStart=/usr/sbin/ipactl start (code=exited, status=0/SUCCESS)
 Main PID: 31320 (code=exited, status=0/SUCCESS)

[...]

May 09 11:47:01 qe-blade-13.idmqe.lab.eng.bos.redhat.com systemd[1]: Started Identity, Poli...
Hint: Some lines were ellipsized, use -l to show in full.


Result. IPA replica was successfully installed and no deadlock has happened.
Marking as verified.
Comment 7 errata-xmlrpc 2017-05-25 15:52:46 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.

https://access.redhat.com/errata/RHBA-2017:1313
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