11.3. Preparing and Adding Local Storage

Preparing Local Storage for Red Hat Enterprise Linux hosts

1. On the host, create the directory to be used for the local storage:

   # mkdir -p /data/images

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2. Ensure that the directory has permissions allowing read/write access to the vdsm user (UID 36) and kvm group (GID 36):

   # chown 36:36 /data /data/images
   # chmod 0755 /data /data/images

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1. Create a local storage directory:

   # 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
   # mount /data

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2. Mount the new local storage, and then modify the permissions and ownership:

   # mount -a
   # chown 36:36 /data /rhvh-data
   # chmod 0755 /data /rhvh-data

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Procedure

1. Click Compute Hosts and select the host.
2. Click Management Maintenance and click OK.
3. Click Management Configure Local Storage.
4. Click the Edit buttons next to the Data Center, Cluster, and Storage fields to configure and name the local storage domain.
5. Set the path to your local storage in the text entry field.
6. If applicable, click the Optimization tab to configure the memory optimization policy for the new local storage cluster.
7. Click OK.