pvmove copies unused extents on the new physical volume

Solution Verified - Updated -

Issue

  • We have fixed LUN space on our old SAN and thin provisioned LUN on our new SAN (EMC VMAX). The problem is that after migrating Physical Extents from old PV to the new PV created over thin provisioned LUN, the space utilized on thin provisioned LUN is more than actual size of the data.

Environment

  • Red Hat Enterprise Linux (All versions)
  • Logical Volume Manager (lvm2)
  • Thin provisioned LUNs

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