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Description: cpuplugd: fix daemon startup race
Symptom: Multiple cpuplugd instances might be started concurrently.
Problem: There is a race between the pid file check/creation and daemon startup.
Solution: Use flock() around pid file check/creation and daemon startup.
Patch : s390-tools-rhel6-cpuplugd_pid_race.patch
Verification :
The patch has been tested, fixes the problem, and will be included in the next upstream release of the s390-tools.
With best regards,
Hendrik
------- Comment From sachinp.com 2011-09-16 12:56 EDT-------
Tested against RHEL 6.2 alpha. This issue has been fixed.
# cat /etc/issue
Red Hat Enterprise Linux Server release 6.2 Beta (Santiago)
Kernel \r on an \m
# uname -r
2.6.32-195.el6.s390x
# cpuplugd -c /etc/sysconfig/cpuplugd
# cpuplugd -f -c /etc/sysconfig/cpuplugd
pid file /var/run/cpuplugd.pid still exists.
This might indicate that an instance of this daemon is already running.
#
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/RHBA-2011-1525.html
Description: cpuplugd: fix daemon startup race Symptom: Multiple cpuplugd instances might be started concurrently. Problem: There is a race between the pid file check/creation and daemon startup. Solution: Use flock() around pid file check/creation and daemon startup. Patch : s390-tools-rhel6-cpuplugd_pid_race.patch Verification : The patch has been tested, fixes the problem, and will be included in the next upstream release of the s390-tools. With best regards, Hendrik