Download HP 3PAR Red Hat Enterprise Linux and Oracle Linux

For RHEL 6.x, the contents of the /etc/multipath.conf file should be edited as in the following
example if the HP 3PAR array is running HP 3PAR OS 3.1.1 or later.
NOTE: If the HP 3PAR array that the RHEL server is connecting to is running an HP 3PAR OS
version earlier than 3.1.1, you must change the no_path_retry setting to 12 rather than 18,
and the polling_interval setting to 5 rather than 10.
NOTE: For RHEL 6.1, replace the device keyword rr_min_io_rq in the example below with
rr_min_io. The keyword rr_min_io_rq is valid only for RHEL 6.2 and later releases.
After the modifications to the /etc/multipath.conf file, restart the multipath daemon or reboot
the host so the changes take effect.
# chkconfig multipathd off
# chkconfig multipathd on
You should find the SAN boot LUN mapped as mpath0. In the following example, with a SAN
boot LUN ID of 350002ac001b90031:
# ls /dev/mapper
control mpath0 mpath0p1
mpath0p2
VolGroup00-LogVol00
VolGroup00-LogVol01
# multipath -ll
mpath0 (350002ac001b90031) dm-0 3PARdata,VV
[size=20G][features=1 queue_if_no_path][hwhandler=0][rw]
\_ round-robin 0 [prio=2][active]
\_ 0:0:0:0 sda 8:0
[active][ready]
\_ 1:0:0:0 sdb 8:16 [active][ready]
# df
Filesystem
1K-blocks
/dev/mapper/VolGroup00-LogVol00
Used Available Use% Mounted on
Modifying the /etc/multipath.conf File
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