*Hi all,*
*I am new to pacemaker and I have some questions about the clvmd + pacemaker + corosync. I wish you could explain it for me if you are free. thank you very much!* *I have 2 nodes and the pacemaker's status is as follows:* [root@controller ~]# pcs status --full Cluster name: mycluster Last updated: Mon Dec 5 18:15:12 2016 Last change: Fri Dec 2 15:01:03 2016 by root via cibadmin on compute1 Stack: corosync Current DC: compute1 (2) (version 1.1.13-10.el7_2.4-44eb2dd) - partition with quorum 2 nodes and 4 resources configured Online: [ compute1 (2) controller (1) ] Full list of resources: Clone Set: dlm-clone [dlm] dlm (ocf::pacemaker:controld): Started compute1 dlm (ocf::pacemaker:controld): Started controller Started: [ compute1 controller ] Clone Set: clvmd-clone [clvmd] clvmd (ocf::heartbeat:clvm): Started compute1 clvmd (ocf::heartbeat:clvm): Started controller Started: [ compute1 controller ] Node Attributes: * Node compute1 (2): * Node controller (1): Migration Summary: * Node compute1 (2): * Node controller (1): PCSD Status: controller: Online compute1: Online Daemon Status: corosync: active/disabled pacemaker: active/disabled pcsd: active/enabled *I create a lvm on controller node and it can be seen on the compute1 node immediately with 'lvs' command. but the lvm it not activate on compute1.* *then i want to create a snapshot of the lvm, but failed with the error message:* *### volume-4fad87bb-3d4c-4a96-bef1-8799980050d1 must be active exclusively to create snapshot ###* *Can someone tell me how to snapshot a lvm in the cluster lvm environment? thank you very much。* Additional information: [root@controller ~]# vgdisplay --- Volume group --- VG Name cinder-volumes System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 19 VG Access read/write VG Status resizable Clustered yes Shared no MAX LV 0 Cur LV 1 Open LV 0 Max PV 0 Cur PV 1 Act PV 1 VG Size 1000.00 GiB PE Size 4.00 MiB Total PE 255999 Alloc PE / Size 256 / 1.00 GiB Free PE / Size 255743 / 999.00 GiB VG UUID aLamHi-mMcI-2NsC-Spjm-QWZr-MzHx-pPYSTt [root@controller ~]# rpm -qa |grep pacem pacemaker-cli-1.1.13-10.el7_2.4.x86_64 pacemaker-libs-1.1.13-10.el7_2.4.x86_64 pacemaker-1.1.13-10.el7_2.4.x86_64 pacemaker-cluster-libs-1.1.13-10.el7_2.4.x86_64 [root@controller ~]# lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert volume-1b0ea468-37c8-4b47-a6fa-6cce65b068b5 cinder-volumes -wi-a----- 1.00g [root@compute1 ~]# lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert volume-1b0ea468-37c8-4b47-a6fa-6cce65b068b5 cinder-volumes -wi------- 1.00g thank you very much!
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