DSXchange

Posted: **Wed Mar 29, 2017 8:33 am**

Below is the current configuration file that has the RAM disk as the first entry in the scratch disk resource pool.

For some reason data stage is using the hard disk entries (/opt/scratch1, /opt/dataset2/scratch, etc.) first and then once they are fully utilised, the RAM disk is being used.

Can anyone state how to amend the configuration entries to ensure that the RAM disk is used first?

Code: Select all

        node "node1"
        {
                fastname "baspc234u1"
                pools ""
                resource disk "/opt/dataset1" {pools ""}
                resource disk "/opt/dataset2" {pools ""}
                resource disk "/opt/dataset3" {pools ""}
                resource disk "/opt/dataset4" {pools ""}
                resource disk "/opt/dataset5" {pools ""}
                resource scratchdisk "/ramdisks/ramdisk0" {pools ""}
                resource scratchdisk "/opt/scratch1" {pools ""}
                resource scratchdisk "/opt/dataset1/scratch" {pools ""}
                resource scratchdisk "/opt/dataset2/scratch" {pools ""}
                resource scratchdisk "/opt/dataset3/scratch" {pools ""}
                resource scratchdisk "/opt/dataset4/scratch" {pools ""}
                resource scratchdisk "/opt/dataset5/scratch" {pools ""}
        }
        node "node2"
        {
                fastname "baspc234u1"
                pools ""
                resource disk "/opt/dataset2" {pools ""}
                resource disk "/opt/dataset3" {pools ""}
                resource disk "/opt/dataset4" {pools ""}
                resource disk "/opt/dataset5" {pools ""}
                resource disk "/opt/dataset1" {pools ""}
                resource scratchdisk "/ramdisks/ramdisk0" {pools ""}
                resource scratchdisk "/opt/scratch1" {pools ""}
                resource scratchdisk "/opt/dataset2/scratch" {pools ""}
                resource scratchdisk "/opt/dataset3/scratch" {pools ""}
                resource scratchdisk "/opt/dataset4/scratch" {pools ""}
                resource scratchdisk "/opt/dataset5/scratch" {pools ""}                
                resource scratchdisk "/opt/dataset1/scratch" {pools ""}
        }
        node "node3"
        {
                fastname "baspc234u1"
                pools ""
                resource disk "/opt/dataset3" {pools ""}
                resource disk "/opt/dataset4" {pools ""}
                resource disk "/opt/dataset5" {pools ""}
                resource disk "/opt/dataset1" {pools ""}
                resource disk "/opt/dataset2" {pools ""}
                resource scratchdisk "/ramdisks/ramdisk0" {pools ""}
                resource scratchdisk "/opt/scratch1" {pools ""}
                resource scratchdisk "/opt/dataset3/scratch" {pools ""}
                resource scratchdisk "/opt/dataset4/scratch" {pools ""}
                resource scratchdisk "/opt/dataset5/scratch" {pools ""}                
                resource scratchdisk "/opt/dataset1/scratch" {pools ""}
                resource scratchdisk "/opt/dataset2/scratch" {pools ""}
        }
        node "node4"
        {
                fastname "baspc234u1"
                pools ""
                resource disk "/opt/dataset4" {pools ""}
                resource disk "/opt/dataset5" {pools ""}
                resource disk "/opt/dataset1" {pools ""}
                resource disk "/opt/dataset2" {pools ""}
                resource disk "/opt/dataset3" {pools ""}
                resource scratchdisk "/ramdisks/ramdisk0" {pools ""}
                resource scratchdisk "/opt/scratch1" {pools ""}
                resource scratchdisk "/opt/dataset4/scratch" {pools ""}
                resource scratchdisk "/opt/dataset5/scratch" {pools ""}                
                resource scratchdisk "/opt/dataset1/scratch" {pools ""}
                resource scratchdisk "/opt/dataset2/scratch" {pools ""}                
                resource scratchdisk "/opt/dataset3/scratch" {pools ""}
        }
        node "node5"
        {
                fastname "baspc234u1"
                pools ""
                resource disk "/opt/dataset5" {pools ""}
                resource disk "/opt/dataset1" {pools ""}
                resource disk "/opt/dataset2" {pools ""}
                resource disk "/opt/dataset3" {pools ""}
                resource disk "/opt/dataset4" {pools ""}
                resource scratchdisk "/ramdisks/ramdisk0" {pools ""}
                resource scratchdisk "/opt/scratch1" {pools ""}
                resource scratchdisk "/opt/dataset5/scratch" {pools ""}                
                resource scratchdisk "/opt/dataset1/scratch" {pools ""}
                resource scratchdisk "/opt/dataset2/scratch" {pools ""}                
                resource scratchdisk "/opt/dataset3/scratch" {pools ""}
                resource scratchdisk "/opt/dataset4/scratch" {pools ""}
        }

Posted: **Wed Mar 29, 2017 3:16 pm**

Try putting your ramdisk into its own non-default pool.

Mike

Posted: **Wed Mar 29, 2017 4:25 pm**

According to IBM, I would have expected your ram disk to be targeted first, then it would spill over to the other scratch disk entries.

http://www-01.ibm.com/support/docview.w ... wg21651831

Does your job execution user id have rwx access to that ram disk path?

Posted: **Thu Mar 30, 2017 5:54 am**

thanks for the reply

Posted: **Thu Mar 30, 2017 6:45 am**

So... what was the resolution?

DSXchange

Configuration File - Scratchdisk allocation

Configuration File - Scratchdisk allocation