# fence\_kdump agent isn't work as expected

**URL:** <https://forums.suse.com/t/fence-kdump-agent-isnt-work-as-expected/30008>\
**Category:** SLES High Availability Extension\
**Created:** [June 30, 2017, 6:50pm UTC](https://forums.suse.com/t/fence-kdump-agent-isnt-work-as-expected/30008 "2017-06-30T18:50:08Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![crazyraven](https://avatars.discourse-cdn.com/v4/letter/c/e480ec/32.png) [@crazyraven](https://forums.suse.com/u/crazyraven)\
**Post date:** [June 30, 2017, 6:50pm UTC](https://forums.suse.com/t/fence-kdump-agent-isnt-work-as-expected/30008/1 "2017-06-30T18:50:08Z")

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Hi experts,

I’m using SLES 12 SP2 for test purpose and I’m also testing SLES High Availability.  
In order to working with fence\_kdump on my cluster, I’ve modified /etc/sysconfig/kdump refer to user document([https://www.suse.com/documentation/sle-ha-12/book\_sleha/data/sec\_ha\_fencing\_config.html#ex\_ha\_fencing\_kdump](https://www.suse.com/documentation/sle-ha-12/book_sleha/data/sec_ha_fencing_config.html#ex_ha_fencing_kdump))

According to that document, if make fence\_kdump resource work properly, kdump should be configured like below:  
cat /etc/sysconfig/kdump

\<…snip\>  
KDUMP\_POSTSCRIPT="/usr/lib64/fence\_kdump\_send -i 1 -p 7410 node02"

However, fence\_kdump\_send script doesn’t exist on /usr/lib64. it’s on /usr/lib so I’ve modified like below:

KDUMP\_POSTSCRIPT="/usr/lib64/fence\_kdump\_send -i 1 -p 7410 node02"

Then, I crashed kernel with command “echo c \> /proc/sysrq-trigger”

The kernel has crashed as expected but kdump didn’t send message to node02 because of below error messages:

…  
Generating REAME Finished.  
Copying System.map Finished.  
Copying Kernel Finished.  
Running /usr/lib/fence\_kdump\_send -i 1 -p7410 node02  
/lib/kdump/save\_dump.sh: line234: /usr/lib/fence\_kdump\_send: No such file or directory  
Last command failed (127)

…

in case of system memory is small and dumped very quickly, it doesn’t matter because fence\_kdump on node02 is waiting 60sec by default but if system has a lot of memory and needed more time to finish dump, to keep vmcore complete, fence\_kdump should receive message from node01.

When kernel panic occurred and fence\_kdump failed, then second fence method(usually it’s fence device based on power device)will be executed. in this case, vmcore will not created completely.

Any idea would be appreciated.

Thank you

---

<div class="post-metadata">

**Author:** ![Automatic\_Reply](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@Automatic\_Reply](https://forums.suse.com/u/Automatic_Reply)\
**Post date:** [July 5, 2017, 7:30am UTC](https://forums.suse.com/t/fence-kdump-agent-isnt-work-as-expected/30008/2 "2017-07-05T07:30:07Z")

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crazyraven,

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