Table 23 Validating Metrocluster Package (continued)

Restrictions

Cannot confirm if the disks are being replicated in case they are being used as raw disks or in case they belong to an Oracle ASM diskgroup.

Skips this check on VxVM diskgroups if the naming convention used by VxVM is legacy and if the controller ID is greater than 512 (This happens when VxVM uses an internal format to recognize devices that do not support legacy DSF format). Also skips the check if the naming convention is enclosure based. In such cases, it is recommended that you change the naming scheme using the vxddladm command so that VxVM output shows the disk names in a persistent DSF format.

NOTE: The checks and validations mentioned in “Validating Metrocluster Package” (page 282) is not applicable for legacy packages. It is recommended that you add the location of the package environment file available in the Metrocluster package directory to the list of files in /etc/ cmcluster/cmfiles2check.

Support for Easy Deployment Features

Easy Cluster Creation

Starting with Serviceguard version A.11.20 Patch PHSS_41628, the cmdeploycl command can be used to create a Metrocluster with sites configured in Serviceguard cluster configuration. Additionally, cmdeploycl throws a warning in case a quorum server is not specified in its list of arguments when it is executed to create a cluster on nodes where Metrocluster is installed.

The cmdeploycl command and options are described below:

cmdeploycl [-t] [-s site ]... [-n node ]... [-N net_template ] [-c clustername] [-q qs_host [qs_ip] -L locklun] [-cfs]

For example to create a two site cluster with nodes n1, n2, n3, and n4, run the following command:

# cmdeploycl -s siteA -n n1 -n n2 -s siteB -n n3 -n n4 -q qs.quorum.com

Easy Storage Preparation

Starting with Serviceguard version A.11.20 Patch PHSS_41628, the cmpreparestg command can be used to create LVM volume groups and VxVM/CVM diskgroups with logical volumes, filesystem and mount points in a Metrocluster environment. If the command is run from the nodes where the replicated disks are in destination mode, then Metrocluster will throw an error. Also if the disks are not in CONSISTENT/SYNCHRONIZED state, then Metrocluster will throw an error indicating the same.

The cmpreparestg command and options is described below:

cmpreparestg {-l vgname -g dgname} [{-p pv_path... -P pvs_file}] {-L [lvname] -c lv_counts} [-m mountpoint] [-o " option string " ...

]

[-n node_name]... [-t]

For example to create a lvm volume group with name newvg and logical volume with name newlv in the cluster, run the following command:

# cmpreparestg -l newvg -p /dev/disk/disk12 -L newlv -o lv_opts="-l 64"

Building a Metrocluster Solution with EMC SRDF 283