If all the paths to the disks have disabled, the LVM2 vg commands stop
responding and wait until at least one path to the disks is restored. As
Release Notes, it is a known issues.
LVMVolumeGroup agent uses LVM2 commands, this behavior causes online and offline entry points of LVMVolumeGroup agent to time out and clean EP stops responding for an indefinite time. Because of this, the service group cannot failover to another node.
Workaround: You need to restore at least one path.
Refer to this https://sort.symantec.com/public/documents/sfha/5.1sp1pr2/linux/productguides/pdf/vcs_notes_51sp1pr2_lin.pdf. page 43 for more detail.
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