Very slow clone of the VM on the iSCSI storage

Solution Verified - Updated -

Issue

The clone of the VM with 20GB preallocated disk takes more than 1 hour.
The iSCSI bay can easily reach transfer level of 200Mb/s but the clone is very slow.

Environment

  • Red Hat Enterprise Virtualization 3.x
  • Red Hat Virtualization 4.x

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