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Posted to bugs@httpd.apache.org by bu...@apache.org on 2015/02/03 08:32:53 UTC
[Bug 57526] New: Apache 2.2.29_openssl-1.0.1k_x86_64 Error creating
semaphore - No space left on device (28
https://issues.apache.org/bugzilla/show_bug.cgi?id=57526
Bug ID: 57526
Summary: Apache 2.2.29_openssl-1.0.1k_x86_64 Error creating
semaphore - No space left on device (28
Product: Apache httpd-2
Version: 2.5-HEAD
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: All
Assignee: bugs@httpd.apache.org
Reporter: atsharma9@gmail.com
Hello,
Environment Details:
Apache: apache-2.2.29_openssl-1.0.1k_x86_64
Linux: Linux 2.6.18-400.1.1.el5 #1 SMP Sun Dec 14 06:01:17 EST 2014 x86_64
x86_64 x86_64 GNU/Linux
Proxy servers: 34 instances (httpd)
Virtual Proxy: 68 instances
Problem:
We have recently updated apache from apache-2.2.27_openssl-1.0.1g_x86_64 to
apache-2.2.29_openssl-1.0.1k_x86_64 in PROD server (details above). We have
stated receiving the semaphore issues.
[26/Jan/2015:18:53:28] [Info] [CA WebAgent IPC] [3033] [CSmSem::getSem]
Attempted to attach to non-existent semaphore with key 0xc8b9bf3c
[26/Jan/2015:18:53:28] [Error] [CA WebAgent IPC] [3033] [CSmSem::getSem] Error
creating semaphore using key 0xc8b9bf3c - No space left on device (28)
The same was done to QA servers also, but no errors found(varies because of
load)
Current Configuration:
#kernel.sem=<SEMMSL> <SEMMNS> <SEMOPM> <SEMMNI>
kernel.sem=512 524288 100 1024
# Controls the maximum shared segment size, in bytes
kernel.shmmax = 68719476736
# Controls the maximum number of shared memory segments, in pages
kernel.shmall = 4294967296
Question:
1. Does apache-2.2.29 have more memory requirement than apache-2.2.27?
2. Could you please help us in checking the thread-safety for below modules
used in our environement:
libmod_sm22.so
mod_actions.so
mod_alias.so
mod_asis.so
mod_authz_host.so
mod_autoindex.so
mod_deflate.so
mod_dir.so
mod_filter.so
mod_headers.so
mod_include.so
mod_negotiation.so
mod_proxy_balancer.so
mod_rewrite.so
mod_setenvif.so
mod_status.so
mod_logio.so
3. Do you consider updating the kernel semaphore on sysctl.conf based on the
values shown above?
Thanks in advance.
Best Regards,
Atul Sharma
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[Bug 57526] Apache 2.2.29_openssl-1.0.1k_x86_64 Error creating
semaphore - No space left on device (28
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=57526
Yann Ylavic <yl...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Yann Ylavic <yl...@gmail.com> ---
(In reply to Atul Sharma from comment #0)
>
> [26/Jan/2015:18:53:28] [Info] [CA WebAgent IPC] [3033] [CSmSem::getSem]
> Attempted to attach to non-existent semaphore with key 0xc8b9bf3c
> [26/Jan/2015:18:53:28] [Error] [CA WebAgent IPC] [3033] [CSmSem::getSem]
> Error creating semaphore using key 0xc8b9bf3c - No space left on device (28)
This is a SiteMinder's module error.
> 1. Does apache-2.2.29 have more memory requirement than apache-2.2.27?
No it does not.
> 2. Could you please help us in checking the thread-safety for below modules
> used in our environement:
> libmod_sm22.so
We can't talk about this module which is not maintained by the ASF nor
supported in this bugzilla.
> mod_actions.so
> mod_alias.so
> mod_asis.so
> mod_authz_host.so
> mod_autoindex.so
> mod_deflate.so
> mod_dir.so
> mod_filter.so
> mod_headers.so
> mod_include.so
> mod_negotiation.so
> mod_proxy_balancer.so
> mod_rewrite.so
> mod_setenvif.so
> mod_status.so
> mod_logio.so
This ones are thread-safe (when used with a threaded MPM).
> 3. Do you consider updating the kernel semaphore on sysctl.conf based on the
> values shown above?
The values look good for your httpd's use, but it also depends on other
software using SysV IPC on the system.
The issue is probably more about semaphores which are not cleaned when httpd
stops (or is it killed? crashes? libmod_sm22 cleanup?), and hence previous ones
stay on the system until no more is available.
I'm rejecting this report since it's not an httpd issue, please contact
SiteMinder's support.
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[Bug 57526] Apache 2.2.29_openssl-1.0.1k_x86_64 Error creating
semaphore - No space left on device (28
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=57526
Atul Sharma <at...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |atsharma9@gmail.com
OS| |All
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