HP XP P9500 Storage - Manual (Page 243)

host1# mkdir /diskset1
host1# mount /dev/md/diskset1/dsk/d1 /diskset1
When using Sun Cluster:
host1# mkdir -p /global/diskset1/d1
host2# mkdir -p /global/diskset1/d1
host1# mount -g /dev/md/diskset1/dsk/d1 /global/diskset1/d1
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 functionality only supports the configurations shown in
the following table.
Table 3-35 Configurations that support the I/O fencing function
OS VCS Storage system Service group
Solaris 9 4.1 MP2 or later Hitachi USP series,
Universal Storage
Platform V/VM series
or Virtual Storage
Platform series
Failover service group
Solaris 10 5.0 MP1 or later Failover service group
Parallel service group
Solaris 11 6.0 PR1 or later Failover service group
• 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
b: The number of paths for each HDLM device
#1
c: The I/O timeout value for the sd or ssd driver #2
Creating an HDLM Environment
3-177
Hitachi Dynamic Link Manager User Guide for Solaris ®