topic Re: HORCM instance check in Disk Enclosures

HORCM instance check

Waugh — Tue, 27 Jan 2009 14:50:21 GMT

Hi,

Is there any command available to check which instances are running for BC and CA.
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How should i differentiate between BC and CA instance using command line.

Regards
Rkumar

Re: HORCM instance check

Amar_Joshi — Tue, 27 Jan 2009 16:29:05 GMT

I usually try to start the instance and it's already started it will say that it's already running.

The HORCM instance is a service and it doesn't differentiate between BC or CA services, only difference can be see in HORCM*.CONF file (CA doesn't use MU#).

Re: HORCM instance check

Nigel Poulton — Tue, 27 Jan 2009 22:07:03 GMT

By default HORCM commands are directed to CA. To direct commands to BC you need to set the following environment variable -
HORCC_MRCF=1

This variable needs to be visible to your shell.

To see if a HORCM instance is running depends on your OS. On Windows takmanager should show your instance in the list of running processes. For Unix it should be listed via ps.

Nigel

Re: HORCM instance check

msaravanan — Fri, 30 Jan 2009 15:27:58 GMT

Hi Kumar,

To check the running horcm instances,
In UNIX,
# ps -aef|grep horcmd
the output will be like this,
# ps -aef|grep horcmd
root 15361 1 0 11:17:54 ? 1:04 horcmd_0360
root 15376 1 0 11:18:03 ? 1:04 horcmd_0361

In this example, the instances 360 & 361 are currently running.

In Windows,
You can use the task manager window to see the process running with name that starts with horcmd.

Difference between BC & CA
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By default all command sent for CA purpose (if there is no HORCC_MRCF variable set).

If you want to send the commands for BC purpose you have to set the HORCC_MRCF=1 variable.

Unfortunately there is no straight method to check the difference.
However, to check whether it's CA & BC pair, just run the "pairdisplay" command for the group and check the serial no. of pair volumes. If it's a diff serial no. (unless until there is no loopback CA configured), then it'a a CA pair. Else it should be BC volume.

cheers,
saran