8.3. Preparing and Adding Local Storage

A local storage domain can be set up on a host. When you set up a host to use local storage, the host automatically gets added to a new data center and cluster that no other hosts can be added to. Multiple host clusters require that all hosts have access to all storage domains, which is not possible with local storage. Virtual machines created in a single host cluster cannot be migrated, fenced or scheduled. For more information on the required system users and groups see Appendix F, System Accounts.

Preparing Local Storage for Red Hat Enterprise Linux Hosts

Preparing Local Storage for Red Hat Virtualization Hosts

Red Hat recommends creating the local storage on a logical volume as follows:

mkdir /data
lvcreate -L $SIZE rhvh -n data
mkfs.ext4 /dev/mapper/rhvh-data
echo "/dev/mapper/rhvh-data /data ext4 defaults,discard 1 2" >> /etc/fstab

# mkdir /data
# lvcreate -L $SIZE rhvh -n data
# mkfs.ext4 /dev/mapper/rhvh-data
# echo "/dev/mapper/rhvh-data /data ext4 defaults,discard 1 2" >> /etc/fstab

Your local storage is ready to be added to the Red Hat Virtualization environment.

Adding local storage to a host in this manner causes the host to be put in a new data center and cluster. The local storage configuration window combines the creation of a data center, a cluster, and storage into a single process.

Adding Local Storage

Your host comes online in a data center of its own.