LPM migration failed with reference code 2005 (lpar hung up)

Context I had a problem once which caused the crash of a migrating LPAR, because of a SCSI reserve on my rootvg (rootvg’s hdisk should be ALWAYS set with the no_reserve attribute for LPM, wether they are  managed by MPIO,

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HDLM : change the default reserve policy on all disks

In order to get LPM to work properly, we need to put the no_reserve attribute to all disks (here we have the hitachi disk example) : We can check the new default parameter :

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