I love trying things on my computer, as I don’t need to ask some customer or employer for testing resources. With that in mind, I was looking for an article on creating a testing environment to implement multipath disks on Oracle ASM. I could find several articles, each with some piece of what I was trying to implement, so I wrote this how-to, putting everything together. The Environment It consists of 2 Virtual Machines running on VirtualBox. Each machine has 3 networks, one for communication with the host (my computer) and the other 2 for multipath configuration. Installing TrueNAS Open your VirtualBox and create a new Virtual Machine. We also need to add a new disk for the ASM Disk Pool (20G). With the VM created, it’s time to install the TrueNas software. We can download it from . I am using the file TrueNAS-12.0-U8.1.iso. here ![ ](https://cdn.hackernoon.com/images/y8NpJmORWIQxyPvYCy7MXmsUZq53-25s3p6v.png) Remove the boot disk (TrueNAS iso), and click OK. Configuring TrueNAS This is your first view at TrueNAS. If you configured the networks as I suggested, there will be one IP in the same network as your computer (host) and 2 others not yet configured. Let’s configure the other 2 networks. Choose 1 to continue. Choose as below for interface 2. Choose as below for interface 3. Now we have the three networks configured. If interface 1 disappears after configuring interface 2 or 3, just edit its configuration and choose DHCP. Now we can log in to the console. Just open your web browser and type the interface 1 IP. Now, go to POOL -> ADD -> CREATE POOL. Create the Pool as above. Ignore the stripe data vdev errors because of having only one disk. Add 3 Zvol of 5G each Go to SHARING -> BLOCK SHARES (SCSI) -> PORTALS -> ADD. Configure as above and SUBMIT. Go to SHARING -> BLOCK SHARES (SCSI) -> TARGETS -> ADD. Configure as above and SUBMIT. Go to SHARING -> BLOCK SHARES (SCSI) -> EXTENTS -> ADD. Configure as above. Don't forget to check the "Disable Physical Block Size Reporting"; otherwise, you will face errors when using the multipath disks on ASM. Create 3 EXTENTS. Go to SHARING -> BLOCK SHARES (SCSI) -> ASSOCIATED TARGETS -> ADD. Go to SERVICES and enable iSCSI, as above. Now we have finished the TrueNAS configuration and the first part of this how-to. The next part will show how to configure the iSCSI, multipath, and UDEV on the database server. À la prochaine.

The writer is smart, but don't just like, take their word for it. #DoYourOwnResearch before making any investment decisions or decisions regarding you health or security. (Do not regard any of this content as professional investment advice, or health advice)

Walkthroughs, tutorials, guides, and tips. This story will teach you how to do something new or how to do something better.

Playing With Oracle ASM and Multipath Disks - Configuring TrueNAS

About Author

Comments

TOPICS

THIS ARTICLE WAS FEATURED IN

Related Stories

Untitled Story

Fixing Oracle DGMGRL Error During Switchover to a Standby Database

Adventures in Assembly #1 [How It Usually Begins]

Adventures in Assembly #2

How Application Stability Management Affects Developer Productivity

How Companies Can Prevent Supply Chain Attacks With Attack Surface Management Solutions

Fixing Oracle DGMGRL Error During Switchover to a Standby Database

Adventures in Assembly #1 [How It Usually Begins]

Adventures in Assembly #2

How Application Stability Management Affects Developer Productivity

How Companies Can Prevent Supply Chain Attacks With Attack Surface Management Solutions

Light-Mode

Classic

Newspaper

Dark-Mode

Neon Noir

Minty

HN StartUps