Red Hat Summit Red Hat SummitSupportConsoleDevelopersStart a trialContact

Chapter 14. Map a Block Device

Use rbd to map an image name to a kernel module. You must specify the image name, the pool name and the user name. rbd will load RBD kernel module on your behalf if it’s not already loaded.

To do so, execute the following: 

sudo rbd map {image-name} --pool {pool-name} --id {user-name}
Copy to Clipboard Toggle word wrap

For example: 

sudo rbd map --pool rbd myimage --id admin
Copy to Clipboard Toggle word wrap

If you use cephx authentication, you must also specify a secret. It may come from a keyring or a file containing the secret.

To do so, execute the following: 

sudo rbd map --pool rbd myimage --id admin --keyring /path/to/keyring
sudo rbd map --pool rbd myimage --id admin --keyfile /path/to/file
Copy to Clipboard Toggle word wrap
Back to top
Red Hat logoGithubredditYoutubeTwitter

Learn

Try, buy, & sell

Communities

About Red Hat Documentation

We help Red Hat users innovate and achieve their goals with our products and services with content they can trust. Explore our recent updates.

Making open source more inclusive

Red Hat is committed to replacing problematic language in our code, documentation, and web properties. For more details, see the Red Hat Blog.

About Red Hat

We deliver hardened solutions that make it easier for enterprises to work across platforms and environments, from the core datacenter to the network edge.

Theme

© 2025 Red Hat