SCSI ATTRIBUTES FOR LUN : /dev/rdisk/disk6
name = load_bal_policy
current = round_robin
default = least_cmd_load
saved =
f.
If the
load_bal_policy
needs to be changed to default, issue the following commands.
# scsimgr save_attr -N /escsi/esdisk -a load_bal_policy=default
# scsimgr get_attr -N /escsi/esdisk -a load_bal_policy
SCSI ATTRIBUTES FOR SETTABLE ATTRIBUTE SCOPE : /escsi/esdisk
name = load_bal_policy
current = round_robin
default = round_robin
saved =
CAUTION:
Do not change any other default values such as path failover and I/O retry
values.
g.
LUN 0, which is used as a special Array Controller mode when talking with the HP
initiator, is seen as a pass through device (
pt
) created by the
esctl
driver which only
supports
path_lockdown
load balancing policy. Do not change any of these attributes
for LUN 0.
# ioscan -kfnNC lunpath
lunpath 0 0/0/4/1/0.0x20420002ac000036.0x0 eslpt CLAIMED
LUN_PATH LUN path for ctl4
lunpath 4 0/0/4/1/0.0x20420002ac000036.0x4001000000000000 eslpt CLAIMED
LUN_PATH LUN path for disk0
# scsimgr get_attr all_lun
...
SCSI ATTRIBUTES FOR LUN : /dev/pt/pt4
Device type = Array_Controller
Serial number = 00000000
Vendor id = 3PARdata
Product id = ARRAY
Product revision = 0000
I/O load balance policy = path_lockdown
LUN Path used when policy is path_lockdown =
0/0/4/1/0.0x20420002ac000036.0x0
h.
You can use the
get_stat
option to obtain the statistics of a given device and for debug
purposes.
# scsimgr get_stat -D /dev/rdisk/disk6
STATISTICS FOR LUN :/dev/rdisk/disk6
Generic Statistics:
Setting Up Multipathing Software on 11i v3
27
