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DPA agent times out executing DD commands

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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

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imsg
6 Indium

Re: DPA agent times out executing DD commands

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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 .

DD Timeout value.png

Hope this will help you.

Regards,

Syed Qadri

Support Engineer Data Protection Advisor

Dell EMC | Technical Support Services

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3 Replies
imsg
6 Indium

Re: DPA agent times out executing DD commands

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Hi Terry,

Please see KB # 000466857

Regards,

Syed Qadri

DPA Support Engineer

Dell EMC Technical Support Services.

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8 Krypton

Re: DPA agent times out executing DD commands

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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

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imsg
6 Indium

Re: DPA agent times out executing DD commands

Jump to solution

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 .

DD Timeout value.png

Hope this will help you.

Regards,

Syed Qadri

Support Engineer Data Protection Advisor

Dell EMC | Technical Support Services

0 Kudos