HP Serviceguard Creating Volumes, Cfsdgadm showpackage logdata, Use the vxprint command to verify

ftsys10	sw (sw)
MOUNT POINT	SHARED VOLUME	TYPE

5.To view the name of the package that is monitoring a disk group, use the cfsdgadm show_package command:

cfsdgadm show_package logdata

SG-CFS-DG-1

Creating Volumes

1.Make log_files volume on the logdata disk group: vxassist -g logdata make log_files 1024m

2.Use the vxprint command to verify:

vxprint log_files

disk group: logdata
TY NAME		ASSOC	KSTATE	LENGTH	PLOFFS	STATE	TUTIL0	PUTIL0
v	log_files	fsgen	ENABLED	1048576	-	ACTIVE	-	-
pl	log_files-01 fsgen		ENABLED	1048576	-	ACTIVE	-	-
sd	ct4t0d6-01	fsgen	ENABLED	1048576	-	ACTIVE	-	-

Managing Disk Groups and Mount Points Using Modular Packages

In a Serviceguard cluster, many disk group and mount point packages are created for applications using CVM and CFS and the applications are dependent on these packages. These disk group and mount point packages are configured for activating disk groups and mounting the volumes. For an application in a cluster, Serviceguard provides the flexibility to combine the CVM disk groups and CFS mount points into a single modular package. This feature is supported from Veritas CVM/CFS version 5.0.1 with HP Serviceguard A.11.20 April 2011 patches (PHSS_41674) or later. As a result, the number of packages used for configuring disk groups and mount points in that cluster reduces significantly in comparison to the packages used for configuring CVM disk groups and CFS mount points in the legacy style of packaging. For example, an application requiring 100 disk groups, 100 mount points, 10 check points, and 10 snapshot packages would translate to a total of 220 packages in the legacy style of packaging. However, in the modular style of packaging, the 100 disk groups and 100 mount point packages can be consolidated into one single package, 10 check points into one package, and 10 snap shots into one package, reducing the total number of packages to three, thereby aiding manageability of packages in that cluster. Also, the number of packages available for configuring applications in the cluster increases. The high availability cluster information displayed by the cmviewcl command is more compact. Note that to create or modify modular CFS packages, CVM should be up and running.

CAUTION: While Serviceguard supports up to 300 configured packages, it is advised to maintain a manageable level when consolidating the disk groups and mount points in the package.

NOTE: Serviceguard supports online reconfiguration of modular CFS packages. For details, see “Online reconfiguration of modular CFS package parameters” (page 211).

Specifying services and resources are not recommended for modular CFS packages. You cannot create or manage modular CFS packages for disk groups and mount points using VEA GUI; you can use Serviceguard Manager to do it.

External scripts and External Pre-scripts can be configured as a part of Modular CFS packages. It is recommended to keep the execution time of these scripts as short as possible. If the script execution time is huge then it might take a long time to start up the package resulting in bringing down the performance. See “About External Scripts” (page 151) for more information on external scripts.

You cannot manage modular CFS packages using the legacy CFS commands cfsdgadm, cfsmntadm, cfsmount, and cfsumount. You must use the cmmakepkg, cmapplyconf, cmrunpkg, cmhaltpkg, and cmdeleteconf commands. The cmmakepkg command enables

204 Building an HA Cluster Configuration