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Posted to bugs@httpd.apache.org by bu...@apache.org on 2023/01/11 21:15:07 UTC

[Bug 66417] New: Unable to restart the hosts due to slotmem issue in RH OS

https://bz.apache.org/bugzilla/show_bug.cgi?id=66417

            Bug ID: 66417
           Summary: Unable to restart the hosts due to slotmem issue in RH
                    OS
           Product: Apache httpd-2
           Version: 2.4.54
          Hardware: Other
                OS: other
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mod_proxy
          Assignee: bugs@httpd.apache.org
          Reporter: sahithiadduri06@gmail.com
  Target Milestone: ---

[Sat Dec 17 16:23:13.476229 2022] [slotmem_shm:error] [pid 1634859:tid
140714406766464] (17)File exists: AH02611: create:
apr_shm_create(/var/log/apache/s1-eu.ariba.com/shm/slotmem-shm-p15744fb4_s4taskcxml_c12_0.shm)
failed

[Sat Dec 17 16:23:13.476283 2022] [:emerg] [pid 1634859:tid 140714406766464]
AH00020: Configuration Failed, exiting

hosts running with RH8 OS are not restarting with the above issue.

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[Bug 66417] Unable to restart the hosts due to slotmem issue in RH OS

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=66417

--- Comment #1 from Marc Stern <ma...@approach.be> ---
I think it's a duplicate of
https://bz.apache.org/bugzilla/show_bug.cgi?id=65180

I added some info in that ticket as it contains more detailed debugging info.

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[Bug 66417] Unable to restart the hosts due to slotmem issue in RH OS

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=66417

--- Comment #2 from Sahithi Adduri <sa...@gmail.com> ---
tried various code fixes, but seemed unable to completely solve the issue.
There is some speculation that the underlying kernel code that Apache relies on
to clear shared memory may “fail silently”.

So, we are possibly hitting a known bug in the Apache code or kernel bug, that
only happens when there are a large number of shared memory segments that are
deleted and re-created very quickly.

This is true even in the more recent Apache release we are using: 2.4.54

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[Bug 66417] Unable to restart the hosts due to slotmem issue in RH OS

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=66417

Ankit kumar <si...@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 OS|other                       |FreeBSD
           Hardware|Other                       |All

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[Bug 66417] Unable to restart the hosts due to slotmem issue in RH OS

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=66417

Ankit kumar <si...@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |critical

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[Bug 66417] Unable to restart the hosts due to slotmem issue in RH OS

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=66417

Ankit kumar <si...@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P2                          |P1

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