Performance log data is unavailable" error when running arraydsp

[Judy Halter]

I have done some research on this command and have found some troubleshooting tips. I have some questions I'm hoping someone can answer.

These are the steps I found to 'reset' things:

1. Stop ARMServer process:

/sbin/init.d/hparray stop

2. Make note of the /var/opt/hparray/log/LOGCATLG
permissions/ownership.

3. Execute the "> LOGCATLG" command to clear the file contents.

4. Restart the ARMServer process:

/sbin/init.d/hparray start

Run performance metrics when more history is available in the log files.
If there are only a few logs with invalid data, those logs should eventually
fall out of the requested time period, and valid performance data will be
available.

Question 1 - does it 'hurt' anything to run these steps during the day while users are actively using the system - I don't want to interfere with writes or reads on the RAID array.

Question 2 - For step 2 and 3, I believe I cd to /var/opt/hparray/log. Then do I type just > LOGCATLG? What does this do?

Question 3 - my goal is to determine if there are any performance recommendations I can get. Do I need to run both the -m and the -r options?

Thanks in advance for your help.

[RAC_1]

I do not think that it will hurt.
It will be better to back up those files and then delete/null out. You amsy also want to have a look man pages of arry commands to know if this will affect in any way or not.

Anil

[Judy Halter]

Yes, I have read all the man pages on this command but still do not understand how the -m and -r options work. Has anyone used them?

[RAC_1]

m and r options?? For which command?? It has been quite some time since I used those commands.

Anil

[A. Clay Stephenson · Accepted solution]

It's very straigtforward:

For example a "-r" analysis from midnite 01-Jan to 01-Mar of the current year is

arraydsp -r 01010000 03010000 array_id

array_id is obtained via arraydsp -i.

The -m analysis is exactly the same substituting -m for -r -- just like the man page says.

[Judy Halter]

Thanks for these responses. I will try these steps and open a new thread if needed.

Thanks,