[Pacemaker] Why Did Pacemaker Restart this VirtualDomain Resource?

[Andrew Martin]

Hello, 


I have a 3 node Pacemaker+Heartbeat cluster (two real nodes and one "standby" quorum node) with Ubuntu 10.04 LTS on the nodes and using the Pacemaker+Heartbeat packages from the Ubuntu HA Team PPA ( https://launchpad.net/~ubuntu-ha-maintainers/+archive/ppa ). I have configured 3 DRBD resources, a filesystem mount, and a KVM-based virtual machine (using the VirtualDomain resource). I have constraints in place so that the DRBD devices must become primary and the filesystem must be mounted before the VM can start: 

node $id="1ab0690c-5aa0-4d9c-ae4e-b662e0ca54e5" vmhost1 
node $id="219e9bf6-ea99-41f4-895f-4c2c5c78484a" quorumnode \ 
attributes standby="on" 
node $id="645e09b4-aee5-4cec-a241-8bd4e03a78c3" vmhost2 
primitive p_drbd_mount2 ocf:linbit:drbd \ 
params drbd_resource="mount2" \ 
op start interval="0" timeout="240" \ 
op stop interval="0" timeout="100" \ 
op monitor interval="10" role="Master" timeout="30" \ 
op monitor interval="20" role="Slave" timeout="30" 
primitive p_drbd_mount1 ocf:linbit:drbd \ 
params drbd_resource="mount1" \ 
op start interval="0" timeout="240" \ 
op stop interval="0" timeout="100" \ 
op monitor interval="10" role="Master" timeout="30" \ 
op monitor interval="20" role="Slave" timeout="30" 
primitive p_drbd_vmstore ocf:linbit:drbd \ 
params drbd_resource="vmstore" \ 
op start interval="0" timeout="240" \ 
op stop interval="0" timeout="100" \ 
op monitor interval="10" role="Master" timeout="30" \ 
op monitor interval="20" role="Slave" timeout="30" 
primitive p_fs_vmstore ocf:heartbeat:Filesystem \ 
params device="/dev/drbd0" directory="/mnt/storage/vmstore" fstype="ext4" \ 
op start interval="0" timeout="60" \ 
op stop interval="0" timeout="60" \ 
op monitor interval="20" timeout="40" 
primitive p_ping ocf:pacemaker:ping \ 
params name="p_ping" host_list="192.168.1.25 192.168.1.26" multiplier="1000" \ 
op start interval="0" timeout="60" \ 
op monitor interval="20s" timeout="60" 
primitive p_sysadmin_notify ocf:heartbeat:MailTo \ 
params email="alert at example.com" \ 
params subject="Pacemaker Change" \ 
op start interval="0" timeout="10" \ 
op stop interval="0" timeout="10" \ 
op monitor interval="10" timeout="10" 
primitive p_vm_myvm ocf:heartbeat:VirtualDomain \ 
params config="/mnt/storage/vmstore/config/myvm.xml" \ 
meta allow-migrate="false" target-role="Started" is-managed="true" \ 
op start interval="0" timeout="180" \ 
op stop interval="0" timeout="180" \ 
op monitor interval="10" timeout="30" 
primitive stonithquorumnode stonith:external/webpowerswitch \ 
params wps_ipaddr="192.168.3.100" wps_port="x" wps_username="xxx" wps_password="xxx" hostname_to_stonith="quorumnode" 
primitive stonithvmhost1 stonith:external/webpowerswitch \ 
params wps_ipaddr="192.168.3.100" wps_port="x" wps_username="xxx" wps_password="xxx" hostname_to_stonith="vmhost1" 
primitive stonithvmhost2 stonith:external/webpowerswitch \ 
params wps_ipaddr="192.168.3.100" wps_port="x" wps_username="xxx" wps_password="xxx" hostname_to_stonith="vmhost2" 
group g_vm p_fs_vmstore p_vm_myvm 
ms ms_drbd_mount2 p_drbd_mount2 \ 
meta master-max="1" master-node-max="1" clone-max="2" clone-node-max="1" notify="true" 
ms ms_drbd_mount1 p_drbd_mount1 \ 
meta master-max="1" master-node-max="1" clone-max="2" clone-node-max="1" notify="true" 
ms ms_drbd_vmstore p_drbd_vmstore \ 
meta master-max="1" master-node-max="1" clone-max="2" clone-node-max="1" notify="true" 
clone cl_ping p_ping \ 
meta interleave="true" 
clone cl_sysadmin_notify p_sysadmin_notify 
location loc_run_on_most_connected g_vm \ 
rule $id="loc_run_on_most_connected-rule" p_ping: defined p_ping 
location loc_st_nodescan stonithquorumnode -inf: vmhost1 
location loc_st_vmhost1 stonithvmhost1 -inf: vmhost1 
location loc_st_vmhost2 stonithvmhost2 -inf: vmhost2 
colocation c_drbd_libvirt_vm inf: g_vm ms_drbd_vmstore:Master ms_drbd_tools:Master ms_drbd_crm:Master 
order o_drbd-fs-vm inf: ms_drbd_vmstore:promote ms_drbd_tools:promote ms_drbd_crm:promote g_vm:start 
property $id="cib-bootstrap-options" \ 
dc-version="1.1.6-9971ebba4494012a93c03b40a2c58ec0eb60f50c" \ 
cluster-infrastructure="Heartbeat" \ 
stonith-enabled="true" \ 
no-quorum-policy="freeze" \ 
last-lrm-refresh="1337746179" 


This has been working well, however last week Pacemaker all of a sudden stopped the p_vm_myvm resource and then started it up again. I have attached the relevant section of /var/log/daemon.log - I am unable to determine what caused Pacemaker to restart this resource. Based on the log, could you tell me what event triggered this? 


Thanks, 


Andrew 
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