Context Few days ago I had a problem with an alt_disk_copy action on one of my systems (running with HDLM), which was freshly restored via mksysb (from another host), causing this error :
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,
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 :