Failed to create gluster snapshots on ISCSI LUN backed bricks

Solution In Progress - Updated -

Issue

gluster snapshot create test1snap test1

snapshot create: failed: Pre Validation failed on node02. Snapshot is supported only for thin provisioned LV. Ensure that all bricks of test1 are thinly provisioned LV.
Pre Validation failed on node02. Snapshot is supported only for thin provisioned LV. Ensure that all bricks of test1 are thinly provisioned LV.
Snapshot command failed

Environment

glusterfs 3.*

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