A customer was attempting to move an LPAR from one POWER7 750 to another POWER7 750 using Live Partition Mobility (LPM). But he was receiving the following error message when performing an LPM validation.

 

 

This was an easy one to fix. The reserve policy on the hdisk on the VIOS (yes, it was a single VIO server not dual VIOS, don’t ask why!) was set to PR_exclusive instead of no_reserve.

 

$ lsmap –vadapter vhost0

SVSA            Physloc                                      Client Partition ID

--------------- -------------------------------------------- ------------------

vhost0          U8233.E8B.XXXXXXX-V1-C180                    0x00000007

 

VTD                   vtscsi0

Status                Available

LUN                   0x8100000000000000

Backing device        hdisk2

Physloc               U78A0.001.XXXXXX-P1-C1-T1-W50060E90104520330-L1000000000000

Mirrored              false

 

 

$ lsdev -dev hdisk2 -attr

attribute      value                 description                      user_settable

 

PCM            PCM/friend/hitachifcp N/A                              True

PR_key_value   0x1f646f04c           Reserve Key                      True

algorithm      round_robin           N/A                              False

clr_q          no                    Device CLEARS its Queue on error True

dvc_support                          N/A                              False

location                             Location Label                   True

lun_id         0x1000000000000       Logical Unit Number ID           False

max_transfer   0x40000               Maximum TRANSFER Size            True

node_name      0x50060e8010460550    FC Node Name                     False

pvid           none                  Physical Volume ID               False

q_err          yes                   Use QERR bit                     False

q_type         simple                Queue TYPE                       True

queue_depth    20                    Queue DEPTH                      True

reassign_to    120                   REASSIGN time out                True

reserve_policy PR_exclusive          Reserve Policy                   True

rw_timeout     60                    READ/WRITE time out              True

scsi_id        0xb0600               SCSI ID                          False

start_timeout  60                    START UNIT time out              True

ww_name        0x50060e8010460330    FC World Wide Name               False

 

Once we changed the reserve_policy setting for hdisk2 from PR_exclusive to no_reserve, the LPM operation worked fine.

Tags:  hscla27c partition aix reserve_policy lpm live mobility gibson chris