HP Serviceguard manual CVM and VxVM Planning, LVM Worksheet

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 180) for more information.

For more information, see “Using the EMS HA Monitors” (page 59).

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 369). 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 80).

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 104).

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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: _____________________________________________________

Physical Volume Name: _____________________________________________________

Physical Volume Name: _____________________________________________________

Physical Volume Name: _____________________________________________________

Name of Second Physical Volume Group: _______bus1____________________________

Physical Volume Name: ______________/dev/dsk/c4t2d0________________________

Physical Volume Name: ______________/dev/dsk/c5t2d0________________________

Physical Volume Name: ______________/dev/dsk/c6t2d0________________________

Physical Volume Name: _____________________________________________________

Physical Volume Name: _____________________________________________________

Physical Volume Name: _____________________________________________________

Physical Volume Name: _____________________________________________________

Physical Volume Name: _____________________________________________________

CVM and VxVM Planning

You can create storage groups using the HP-UX Logical Volume Manager (LVM, described in the previous section), or using Veritas VxVM and CVM software.

102 Planning and Documenting an HA Cluster