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2 Intern

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148 Posts

1878

June 19th, 2012 05:00

Unable to query primary DGs from DR management server

Hi All,

I am unable to query my production DG groups from my DR management host.I am able to list all prodcution storage arrays from DR management server and we have enabled GNS daemon.

Any suggestion to resolve this ?

859 Posts

June 19th, 2012 05:00

Do you see the DGs on the DR site? Have you enabled the mirroring and enabled GNS daemon from option file?

regards,

Saurabh

859 Posts

June 19th, 2012 06:00

restart the GNS daemon at both sites and check the storgnsd logs.

2 Intern

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148 Posts

June 19th, 2012 06:00

restarted at DR side.But at production side,the restrt got hung..the serivce showing as stopping now

2 Intern

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148 Posts

June 19th, 2012 06:00

I dont have any DGs created at DR site and both options have been enabled

Parameter:            SYMAPI_GNS_MIRRORED_GROUP_CONTROL

Allowed values:       ENABLE | DISABLE

Default value:        DISABLE

Description:          Allows group modifications to device groups that were created by a remote GNS daemon via remote SRDF                        mirroring.

SYMAPI_GNS_MIRRORED_GROUP_CONTROL = ENABLE

Parameter:            SYMAPI_USE_GNS

Allowed values:       ENABLE | DISABLE

Default value:        DISABLE

Description:          Stores and maintains, in a common repository, SYMAPI device group (DG) and composite group (CG) definitions across Symmetrix arrays that are visible to all locally-attached hosts.

SYMAPI_USE_GNS = ENABLE

2 Intern

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148 Posts

June 19th, 2012 07:00

this task not showing in task manager..currently i am unable to query my

DGs from primary host as well

859 Posts

June 19th, 2012 07:00

you can kill storgnsd from task manager.

2 Intern

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148 Posts

June 19th, 2012 07:00

restarted the service on both sides..checking the logs now

859 Posts

June 24th, 2012 01:00

Hi Anoop,

What's the status? Do you dgs after restarting the daemons?

Regards,

Saurabh

June 25th, 2012 00:00

Hi

Running the Prod Device group query from DR management server will work only when GNS deamon is running and DR management host is local to any of the symmetrix boxes,which are  locally accessed by Prod management host.. I believe.. Correct me If I am wrong..  Thank you.

859 Posts

June 25th, 2012 00:00

HI Chandu,

In case of RDF DGs and mirroring is enabled on RDF1 site. GNS daemons mirrors the RDF1 DGs to R2 site as RDF2 type DGs. The condition is the local Symm on R1 site should be visible as Remote on the R2.

regards,

Saurabh

2 Intern

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148 Posts

June 25th, 2012 07:00

I have opened with EMC and they told that my DR Daemon option file was corrupted and they have rebuilt it.Currently I am able to query all DGs but unable to query by sym wise.

ie,

If I Issue symdg list  it will display all DGs  but If I issue symdg -sid <> list,it will no anything

June 27th, 2012 10:00

Saurabh,

Thank you for clarifying. Could you please share any doc on GNS deamon operations with DGs..

7 Posts

December 3rd, 2013 08:00

Hi Anoop,

We have a similar issue, where GNS is not propagating  R1 RDF-Type DGs  to our R2 array.

Did you find a fix for your issue? Your last update states that EMC asked you to rebuild a corrupt daemons_options file.

4 Apprentice

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423 Posts

December 3rd, 2013 23:00

Check your options file and make sure SYMAPI_USE_GNS = ENABLE is set ensure the # is removed from the start of the line.

286 Posts

December 4th, 2013 07:00

Do you have GNS_REMOTE_MIRROR enabled on the R1 SE server that isn't propating the RDF2 type group on the R2 SE server? This isn't enabled by default when GNS is in use. Also there are exceptions where GNS cannot remotely mirror certain types of RDF groups with specific SRDF configurations such as:

◆ Groups containing any concurrent devices

◆ Groups containing any cascaded devices

◆ Composite groups comprised of device groups

◆ Groups containing any hop-2 devices (including 2TGT, 2BCV, 2VDEV devices)

◆ Device and composite groups of type=ANY

◆ If a standard device in the group is paired with an remote SRDF BCV

◆ If there are no standard SRDF devices in the group

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