Problem Summary: When shutting down or rebooting a node, the node may hang and the shutdown or reboot sequence may not complete. The system hangs after issuing the following message: Failfast: Halting because all userland daemons all have died.
Workaround: Before shutting down or rebooting the node, issue the following command: psradm -f -a:
To shutdown a node:
# scswitch -S -h <node>
# psradm -f -a
# shutdown -g0 -y -i0
To reboot a node:
# scswitch -S -h <node>
# psradm -f -a
# shutdown -g0 -y -i6
In some rare instances, the suggested workarounds may fail to resolve this problem.