AIX + HDLM restored from cloned mksysb : VG creation or alt_disk_copy problem

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 :

Share Button

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,

Share Button

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 :

Share Button