irqbalance.service fails to start and message "Failed to set up user namespacing" is shown.
Issue
Error observed while attempting to start irqbalance.service:
server.hostname systemd[PID]: Started irqbalance daemon.
server.hostname systemd[PID]: irqbalance.service: Failed to set up user namespacing: No space left on device
server.hostname systemd[PID]: irqbalance.service: Failed at step USER spawning /usr/sbin/irqbalance: No space left on device
Environment
Red Hat Enterprise Linux 8
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