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6.2. Enabling Kernel Modules

Before running the cns-deploy tool, you must ensure that the dm_thin_pool, dm_multipath, and target_core_user modules are loaded in the OpenShift Container Platform node. Execute the following command on all OpenShift Container Platform nodes to verify if the modules are loaded: 
# lsmod | grep dm_thin_pool
# lsmod | grep dm_multipath
# lsmod | grep target_core_user
If the modules are not loaded, then execute the following command to load the modules: 
# modprobe dm_thin_pool
# modprobe dm_multipath
# modprobe target_core_user

Note

To ensure these operations are persisted across reboots, create the following files and update each with the content as mentioned: 
# cat /etc/modules-load.d/dm_thin_pool.conf
dm_thin_pool
# cat /etc/modules-load.d/dm_multipath.conf
dm_multipath
# cat /etc/modules-load.d/target_core_user.conf
target_core_user