Managing Serviceguard Eighteenth Edition, September 2010

resource_start AUTOMATIC

resource_up_value = UP

The example above will monitor all PV links for the volume group vgpkg. As long as

all devices within the vgpkg volume group are functional, the resource will remain in

UP status. When the last path to the storage for the volume group fails, or any device

within the volume group fails, the resource value will change, and at the next polling

interval the package will fail because the resource no longer meets the package

requirements. The package can then fail over to any other node for which this resource

is still in the UP status.

IMPORTANT: You must set the IO timeout for all logical volumes within the volume

group being monitored to something other than the default of zero (no timeout);

otherwise the EMS resource monitor value will never change upon a failure. Suggested

IO timeout values are 20 to 60 seconds. See “Setting Logical Volume Timeouts” (page 234)

for more information.

For more information, see “Using the EMS HA Monitors” (page 79).

LVM Worksheet

You may find a worksheet such as the following useful to help you organize and record

your physical disk configuration. This worksheet is an example; blank worksheets are

in Appendix E (page 463). Make as many copies as you need.

NOTE: Under agile addressing, the physical volumes in the sample worksheet that

follows would have names such as disk1, disk2, etc. See “About Device File Names

(Device Special Files)” (page 106).

As of A.11.20, Serviceguard supports cluster-wide DSFs, and HP recommends that you

use them. See “About Cluster-wide Device Special Files (cDSFs)” (page 135).

=============================================================================

Volume Group Name: __________/dev/vg01__________________________________

Name of First Physical Volume Group: _______bus0___________________________

Physical Volume Name: ____________/dev/dsk/c1t2d0__________________________

Physical Volume Name: ____________/dev/dsk/c2t2d0__________________________

Physical Volume Name: ____________/dev/dsk/c3t2d0__________________________

Physical Volume Name: _____________________________________________________

Name of Second Physical Volume Group: _______bus1____________________________

LVM Planning 133