HP EVA P6550 HP P6300/P6500 EVA User Guide (5697-2486, September 2013) - Page 66

Configuring with Veritas Volume Manager, Configuring FCAs with the, Oracle SAN driver stack

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Configuring with Veritas Volume Manager The Dynamic Multipathing (DMP) feature of Veritas Volume Manager (VxVM) can be used for all FCAs and all drivers. EVA disk arrays are certified for VxVM support. When you install FCAs, ensure that the driver parameters are set correctly. Failure to do so can result in a loss of path failover in DMP. For information about setting FCA parameters, see "Configuring FCAs with the Oracle SAN driver stack" (page 62) and the FCA manufacturer's instructions. The DMP feature requires an Array Support Library (ASL) and an Array Policy Module (APM). The ASL/APM enables Asymmetric Logical Unit Access (ALUA). LUNs are accessed through the primary controller. After enablement, use the vxdisk list command to determine the primary and secondary paths. For VxVM 4.1 (MP1 or later), you must download the ASL/APM from the Symantec/Veritas support site for installation on the host. This download and installation is not required for VxVM 5.0 or later. To download and install the ASL/APM from the Symantec/Veritas support website: 1. Go to http://support.veritas.com. 2. Enter Storage Foundation for UNIX/Linux in the Product Lookup box. 3. Enter EVA in the Enter keywords or phrase box, and then click the search symbol. 4. To further narrow the search, select Solaris in the Platform box and search again. 5. Read TechNotes and follow the instructions to download and install the ASL/APM. 6. Run vxdctl enable to notify VxVM of the changes. 7. Verify the configuration of VxVM as shown in Example 3 "Verifying the VxVM configuration" (the output may be slightly different depending on your VxVM version and the array configuration). Example 3 Verifying the VxVM configuration # vxddladm listsupport all | grep HP libvxhpevale.so HP HSV200, HSV210 # vxddladm listsupport libname=libvxhpevale.so ATTR_NAME ATTR_VALUE LIBNAME libvxhpevale.so VID HP PID HSV200, HSV210 ARRAY_TYPE A/A-A-HP ARRAY_NAME EVA4K6K, EVA8000 # vxdmpadm listapm all | grep HP dmphpalua dmphpalua # vxdmpadm listapm dmphpalua Filename: dmphpalua APM name: dmphpalua APM version: 1 Feature: VxVM VxVM version: 41 Array Types Supported: A/A-A-HP Depending Array Types: A/A-A State: Active 1 A/A-A-HP Active # vxdmpadm listenclosure all ENCLR_NAME ENCLR_TYPE ENCLR_SNO STATUS ARRAY_TYPE Disk Disk DISKS CONNECTED Disk EVA81000 EVA8100 50001FE1002709E0 CONNECTED A/A-A-HP By default, the EVA I/O policy is set to Round-Robin. For VxVM 4.1 MP1, only one path is used for the I/Os with this policy. Therefore, HP recommends that you change the I/O policy to Adaptive in order to use all paths to the LUN on the primary controller. Example 4 "Setting the I/O policy" shows the commands you can use to check and change the I/O policy. 66 Configuring application servers

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Configuring with Veritas Volume Manager
The Dynamic Multipathing (DMP) feature of Veritas Volume Manager (VxVM) can be used for all
FCAs and all drivers. EVA disk arrays are certified for VxVM support. When you install FCAs,
ensure that the driver parameters are set correctly. Failure to do so can result in a loss of path
failover in DMP. For information about setting FCA parameters, see
“Configuring FCAs with the
Oracle SAN driver stack” (page 62)
and the FCA manufacturer’s instructions.
The DMP feature requires an Array Support Library (ASL) and an Array Policy Module (APM). The
ASL/APM enables Asymmetric Logical Unit Access (ALUA). LUNs are accessed through the primary
controller. After enablement, use the
vxdisk list
<device>
command to determine the
primary and secondary paths. For VxVM 4.1 (MP1 or later), you must download the ASL/APM
from the Symantec/Veritas support site for installation on the host. This download and installation
is
not
required for VxVM 5.0 or later.
To download and install the ASL/APM from the Symantec/Veritas support website:
1.
Go to
h
t
tp://su
ppo
r
t
.v
e
r
it
a
s
.co
m
.
2.
Enter
Storage Foundation for UNIX/Linux
in the Product Lookup box.
3.
Enter
EVA
in the Enter keywords or phrase box, and then click the search symbol.
4.
To further narrow the search, select
Solaris
in the Platform box and search again.
5.
Read
TechNotes
and follow the instructions to download and install the ASL/APM.
6.
Run
vxdctl enable
to notify VxVM of the changes.
7.
Verify the configuration of VxVM as shown in
Example 3 “Verifying the VxVM configuration”
(the output may be slightly different depending on your VxVM version and the array
configuration).
Example 3 Verifying the VxVM configuration
# vxddladm listsupport all | grep HP
libvxhpevale.so
HP
HSV200,
HSV210
# vxddladm listsupport libname=libvxhpevale.so
ATTR_NAME
ATTR_VALUE
=======================================================================
LIBNAME
libvxhpevale.so
VID
HP
PID
HSV200, HSV210
ARRAY_TYPE
A/A-A-HP
ARRAY_NAME
EVA4K6K, EVA8000
# vxdmpadm listapm all | grep HP
dmphpalua
dmphpalua
1
A/A-A-HP
Active
# vxdmpadm listapm dmphpalua
Filename:
dmphpalua
APM name:
dmphpalua
APM version:
1
Feature:
VxVM
VxVM version:
41
Array Types Supported:
A/A-A-HP
Depending Array Types:
A/A-A
State:
Active
# vxdmpadm listenclosure all
ENCLR_NAME
ENCLR_TYPE
ENCLR_SNO
STATUS
ARRAY_TYPE
============================================================================
Disk
Disk
DISKS
CONNECTED
Disk
EVA81000
EVA8100
50001FE1002709E0
CONNECTED
A/A-A-HP
By default, the EVA I/O policy is set to
Round-Robin
. For VxVM 4.1 MP1, only one path is used
for the I/Os with this policy. Therefore, HP recommends that you change the I/O policy to
Adaptive
in order to use all paths to the LUN on the primary controller.
Example 4 “Setting the
I/O policy”
shows the commands you can use to check and change the I/O policy.
66
Configuring application servers