Setting Up Vcs - Hitachi XP P9500 User Manual

When using Sun Cluster:

Setting Up VCS

When VCS is installed on an HDLM host, you can register HDLM devices, or
VxVM disk groups containing HDLM devices, as resource groups.
For details on registering resource groups, refer to the VCS documentation.
Notes
• The I/O fencing function only supports the configurations shown in
3-33 Configurations that support the I/O fencing function on page
Solaris 9
Solaris 10
#
• When using the vxfentsthdw command of the I/O fencing function to test
HDLM devices, make sure that among all nodes, there is only one path to
the HDLM devices that are to be tested that is online. Use the HDLM
command offline operation to change the status of other paths to
offline, and then test the devices. If there are any nodes that have more
than one online path, the vxfentsthdw command will end abnormally.
• When using the VCS I/O fencing function, we recommend that you enable
the HDLM path health checking function with a one-minute checking
interval.
In addition, use the following formula to calculate the minimum value to
be set for OfflineTimeout of the DiskGroup resource that is specified for
the disk group that has used an HDLM device:
value-to-be-set = a + ((b - 1) × (c + 0.5 × (d - 1)))
a: The checking interval for the HDLM path health checking function
host1# mkdir /diskset1
host1# mount /dev/md/diskset1/dsk/d1 /diskset1
host1# mkdir -p /global/diskset1/d1
host2# mkdir -p /global/diskset1/d1
host1# mount -g /dev/md/diskset1/dsk/d1 /global/diskset1/d1
Table 3-33 Configurations that support the I/O fencing function
OS VCS
4.1 MP2 or later
5.0 MP1 or later
Configurations that use volume groups are not supported.
Creating an HDLM Environment
Hitachi Dynamic Link Manager User Guide (for Solaris(R))
Storage system
Hitachi USP, Failover service group
Universal Storage
Failover service group#
Platform V/VM or
Virtual Storage
Parallel service group
Platform
Table
3-163.
Service group
3-163