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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 43945] New: - restart lockup
Date Fri, 23 Nov 2007 06:23:34 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=43945

           Summary: restart lockup
           Product: Apache httpd-2
           Version: 2.2.6
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P2
         Component: Core
        AssignedTo: bugs@httpd.apache.org
        ReportedBy: bugs@ausics.net


Web hosting environment
Slackware 11 and 12
Linux www1 2.6.23.8 #1 SMP Tue Nov 20 07:53:02 EST 2007 i686 Intel(R) Pentium(R)
4 CPU 2.60GHz GenuineIntel GNU/Linux
gcc version 4.1.2

If apache is stopped and restarted within a short period of time on several
occasions, apache hangs at starting.

Shows one process only:  

19180 ?        Ss     0:00 /usr/local/apache/bin/httpd -k start

# ./apachectl stop
httpd (no pid file) not running
#

#./apachectl start
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
Unable to open logs

# strace -p 19180
Process 19180 attached - interrupt to quit
read(13,


it will hang there, stopping, killing, HUP, nothing will correct this state
except for a reboot (waited about 5 minutes, but as you can appreciate,
customers don't like a dead server )

This occurs on at least 2 separate servers, one with MySQL, one without

This can be reproduced by stop/start/stop/start/stop/start allowing a second or
two between them, it has happened even on 2.2.4. Occasionally as much as a
minute can lapse between them and it locks, strace -p does nothing it just sits
there.

it is noticeable when new vhosts are added or old ones deleted by the scripts,
that do a restart obviously after changing httpd.conf, this is ordinarily fine,
but if a few happen almost simultaneously it sets off alarms and we find it in
this "suspended state"


Killing it so all httpd process are gone, restart same thing, its like memory or
something is not being freed?

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