Hi Lon Thans again, but that's strange because in the man , the recommended values are : intervall="1" tko="10" and so we have a result < 21s which is the default value of heart-beat timer, so not a hair above like you recommened in previous email ... extract of man qddisk : interval="1" This is the frequency of read/write cycles, in seconds. tko="10" This is the number of cycles a node must miss in order to be declared dead. ? PS : " don't recall if there's a way to do it from cluster.conf" yes we can change the deadnode_timeout in cluster.conf : <cman deadnode_timer="DEADNODETIMER_VALUE"/> Thanks Regards Alain Moullé -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster