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DPA agent times out executing DD commands
Hi
After successfully adding my DDVE system to my DPA 6.3 environment, I noticed repeated instances of these messages in the DPA agent log '/opt/emc/dpa/agent/logs/dpaagent.log':
WARN 3639.3645 20170428:112117 com.ssh - aapiSSHCommandIO(): timeout reached - aborting
WARN 3639.3645 20170428:112117 agent.mod.dd - ssh_rundd_cmd(): Failed to run command system show performance duration 5 min on host ddve
WARN 3639.3645 20170428:112211 com.ssh - aapiSSHCommandIO(): timeout reached - aborting
WARN 3639.3645 20170428:112211 agent.mod.dd - ssh_rundd_cmd(): Failed to run command scsitarget endpoint show stats interval 5 count 1 all on host ddve
WARN 3639.3645 20170428:115312 com.ssh - aapiSSHCommandIO(): timeout reached - aborting
WARN 3639.3645 20170428:115315 agent.mod.dd - ssh_rundd_cmd(): Failed to run command vtl show config on host ddve
WARN 3639.3643 20170428:122511 com.ssh - aapiSSHCommandIO(): timeout reached - aborting
WARN 3639.3643 20170428:122511 agent.mod.dd - ssh_rundd_cmd(): Failed to run command vtl show config on host ddve
WARN 3639.3643 20170428:122532 com.ssh - aapiSSHCommandIO(): timeout reached - aborting
WARN 3639.3643 20170428:122532 agent.mod.dd - ssh_rundd_cmd(): Failed to run command system show performance duration 5 min on host ddve
WARN 3639.3643 20170428:122620 com.ssh - aapiSSHCommandIO(): timeout reached - aborting
WARN 3639.3643 20170428:122620 agent.mod.dd - ssh_rundd_cmd(): Failed to run command scsitarget endpoint show stats interval 5 count 1 all on host ddve
WARN 3639.3645 20170428:125805 com.ssh - aapiSSHCommandIO(): timeout reached - aborting
WARN 3639.3645 20170428:125805 agent.mod.dd - ssh_rundd_cmd(): Failed to run command scsitarget endpoint show stats interval 5 count 1 all on host ddve
I've looked at the timeout values available to be set in the DPAdvisor GUI's Admin -> Configure System Settings -> Data Collection Agents -> {my agent}, but I don't see anything that affects how long the agent waits for the DDSH command.
When I run the DDSH command by hand in a ssh session, it executes in 12 seconds (including ~5 seconds for me to enter the password):
dpa-agent:/ # date; ssh sysadmin@ddve system show performance duration 5 min; date
Fri Apr 28 13:38:17 UTC 2017
EMC Data Domain Virtual Edition
Password:
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Time Stamp |Throughput |IOPS |Protocol Latency |Streams |State |Utilization|
|read write repl-in repl-out|total read write | avg read write | read write read+ write+ repl-in repl-out| | CPU|
Date Time | | seq/rand seq/rand | seq/rand seq/rand | seq/rand seq/rand | | avg|
YYYY-MM-DD HH:MM:SS|MiB/s MiB/s MiB/s MiB/s|ops/s ops/s ops/s | ms ms ms | # # # # # #|CDPVMSFIRGL| %|
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2017-04-28 07:33:02 0.0 0.0 0.00 0.00 0 0/0 0/0 0.4 0.0/0.0 0.0/0.0 0/0 0/0 0 0 0 0 ----------- 67
Fri Apr 28 13:38:29 UTC 2017
dpa-agent:/ #
What can I do to cure this problem?
Thanks
tl
imsg
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April 28th, 2017 08:00
Hi Terry,
To Increase the Timeout request parameter Please Go to > Inventory > Object Library > Storage > Select your DD> Properties > Data Collection > Select DD Component > Edit > Change the Frequency " Period" If you like to Increase or decrease the request frequency.
Or Under Options Change Value 10 to 300.
Value 10 and 300 is in seconds.
So Value 300 = 5 minutes.
You can try to increase the value if you see timeout errors.
please see screen capture blow .
Hope this will help you.
Regards,
Syed Qadri
Support Engineer Data Protection Advisor
Dell EMC | Technical Support Services
imsg
21 Posts
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April 28th, 2017 06:00
Hi Terry,
Please see KB # 000466857
Regards,
Syed Qadri
DPA Support Engineer
Dell EMC Technical Support Services.
tlemons1
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April 28th, 2017 07:00
Hi Syed
Thanks for the reply. I did find that article myself. It mentions:
"
2) Increase the timeout of the DPA request
The timeout request parameter may be adjusted to a higher value to allow the command more time to return from the Data Domain.
NOTE: The maximum value for the timeout request parameter is 2100.
Please contact EMC Technical Support for further details or information"
But it doesn't say how/where to adjust this timeout value.
Thanks
tl