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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.
