Thursday, September 29, 2011

Linux LVM with Veritas DMP as multipathing

"dmp_native_support" parameter is required to turn on in order for the DMP to provide Linux LVM VG multipathing.

# vxdmpadm settune dmp_native_support=on
# vxdmpadm gettune  |grep support
dmp_native_support                       on              off
# lvmdiskscan |grep emc |grep LVM
  /dev/vx/dmp/emc_clariion0_1000   [       15.00 GB] LVM physical volume
  /dev/vx/dmp/emc0_05ff            [        1.01 GB] LVM physical volume
  /dev/vx/dmp/emc0_05fe            [        1.01 GB] LVM physical volume
  /dev/vx/dmp/emc0_05fd            [        1.01 GB] LVM physical volu

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