[Pacemaker] 'crm configure edit' failed with "Timer expired"

[Lonni J Friedman]

I'm running Fedora17, with pacemaker-1.18.  I just tried to make a
configuration change with crmsh, and it failed as follows:
##########
# crm configure edit
Call cib_replace failed (-62): Timer expired
<null>
ERROR: could not replace cib
INFO: offending xml: <configuration>
	<crm_config>
		<cluster_property_set id="cib-bootstrap-options">
			<nvpair id="cib-bootstrap-options-dc-version" name="dc-version"
value="1.1.8-2.fc16-394e906"/>
			<nvpair id="cib-bootstrap-options-cluster-infrastructure"
name="cluster-infrastructure" value="openais"/>
			<nvpair id="cib-bootstrap-options-expected-quorum-votes"
name="expected-quorum-votes" value="2"/>
			<nvpair id="cib-bootstrap-options-stonith-enabled"
name="stonith-enabled" value="false"/>
			<nvpair id="cib-bootstrap-options-no-quorum-policy"
name="no-quorum-policy" value="ignore"/>
		</cluster_property_set>
	</crm_config>
	<nodes>
		<node id="farm-ljf0" uname="farm-ljf0">
			<instance_attributes id="nodes-farm-ljf0">
				<nvpair id="nodes-farm-ljf0-standby" name="standby" value="off"/>
			</instance_attributes>
		</node>
		<node id="farm-ljf1" uname="farm-ljf1"/>
	</nodes>
	<resources>
		<master id="FS0_Clone">
			<meta_attributes id="FS0_Clone-meta_attributes">
				<nvpair id="FS0_Clone-meta_attributes-master-max"
name="master-max" value="1"/>
				<nvpair id="FS0_Clone-meta_attributes-master-node-max"
name="master-node-max" value="1"/>
				<nvpair id="FS0_Clone-meta_attributes-clone-max" name="clone-max"
value="2"/>
				<nvpair id="FS0_Clone-meta_attributes-clone-node-max"
name="clone-node-max" value="1"/>
				<nvpair id="FS0_Clone-meta_attributes-notify" name="notify" value="true"/>
			</meta_attributes>
			<primitive class="ocf" id="FS0" provider="linbit" type="drbd">
				<instance_attributes id="FS0-instance_attributes">
					<nvpair id="FS0-instance_attributes-drbd_resource"
name="drbd_resource" value="r0"/>
				</instance_attributes>
				<operations>
					<op id="FS0-monitor-10s" interval="10s" name="monitor" role="Master"/>
					<op id="FS0-monitor-30s" interval="30s" name="monitor" role="Slave"/>
				</operations>
			</primitive>
		</master>
		<group id="g_services">
			<primitive class="ocf" id="ClusterIP" provider="heartbeat" type="IPaddr2">
				<instance_attributes id="ClusterIP-instance_attributes">
					<nvpair id="ClusterIP-instance_attributes-ip" name="ip"
value="10.31.99.8"/>
					<nvpair id="ClusterIP-instance_attributes-cidr_netmask"
name="cidr_netmask" value="22"/>
					<nvpair id="ClusterIP-instance_attributes-nic" name="nic" value="eth1"/>
				</instance_attributes>
				<operations>
					<op id="ClusterIP-monitor-10s" interval="10s" name="monitor"/>
				</operations>
				<meta_attributes id="ClusterIP-meta_attributes">
					<nvpair id="ClusterIP-meta_attributes-target-role"
name="target-role" value="Started"/>
				</meta_attributes>
			</primitive>
			<primitive class="ocf" id="FS0_drbd" provider="heartbeat" type="Filesystem">
				<instance_attributes id="FS0_drbd-instance_attributes">
					<nvpair id="FS0_drbd-instance_attributes-device" name="device"
value="/dev/drbd0"/>
					<nvpair id="FS0_drbd-instance_attributes-directory"
name="directory" value="/mnt/sdb1"/>
					<nvpair id="FS0_drbd-instance_attributes-fstype" name="fstype"
value="xfs"/>
				</instance_attributes>
				<meta_attributes id="FS0_drbd-meta_attributes">
					<nvpair id="FS0_drbd-meta_attributes-target-role"
name="target-role" value="Started"/>
				</meta_attributes>
			</primitive>
			<primitive class="systemd" id="FS0_nfs" type="nfs-server">
				<operations>
					<op id="FS0_nfs-monitor-10s" interval="10s" name="monitor"/>
				</operations>
				<meta_attributes id="FS0_nfs-meta_attributes">
					<nvpair id="FS0_nfs-meta_attributes-target-role"
name="target-role" value="Started"/>
				</meta_attributes>
			</primitive>
		</group>
	</resources>
	<constraints>
		<rsc_colocation id="fs0_on_drbd" rsc="g_services" score="INFINITY"
with-rsc="FS0_Clone" with-rsc-role="Master"/>
		<rsc_order first="FS0_Clone" first-action="promote"
id="FS0_drbd-after-FS0" score="INFINITY" then="g_services"
then-action="start"/>
	</constraints>
</configuration>
##########

I'm confused why this failed.  In fact, no matter what I try to
change, it always fails in the same fashion when I attempt to save the
changes.

"crm status" currently shows the following:
#######
Last updated: Wed Oct 17 16:36:45 2012
Last change: Tue Oct 16 14:23:18 2012 via cibadmin on farm-ljf1
Stack: openais
Current DC: NONE
2 Nodes configured, 2 expected votes
5 Resources configured.


OFFLINE: [ farm-ljf0 farm-ljf1 ]
######

help?