To run DMP in VIOS, the minimum VIOS level that is required is 18.104.22.168 or later.
Before installing DMP on VIOS, confirm the following:
If any path to the target disk has SCSI reserve ODM attribute set, then change the attributes to release the SCSI reservation from the paths, on a restart.
If a path has the reserve_policy attribute set, change thereserve_policy attribute to no_reserve for all the paths.
# lsattr -E1 hdisk557 | grep res
Reserve Policy True
# chdev -l hdisk557 -a reserve_policy=no_reserve -P
If a path has the reserve_lock attribute set, change the reserve_lockattribute to no.
# lsattr -E1 hdisk558 | grep reserve_lock
Reserve Device on open True
# chdev -l hdisk558 -a reserve_lock=no -P