VERITAS Storage Foundation 4.1 Cross-Platform Data Sharing Administrator's Guide

Chapter 3, Maintaining Your System
Default Activation of Shared Disk Groups
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Displaying Device Quotas for CDS Disk Groups
Use the vxprint -lG command to display the maximum number of devices in a CDS disk group.
For example, to display the maximum number of devices in the CDS disk group cdsdg1, you can
use a command of the form:
# vxprint -lG cdsdg1
The output is similar to the following:
group: dg1
info: dgid=1027365608.1064.vmesc6
version: 110
alignment: 8192 (bytes)
activation: read-write
detach-policy: global
copies: nconfig=default nlog=default
devices: max=32000 cur=0
minors: >= 16000
cds=on
The value of max on the devices line indicates the maximum number of devices. In this
example, the maximum number of devices is 32,000.
You can also use the following command to obtain the maximum number of devices:
# vxprint -g dg1 -GF %maxdev
32000
Default Activation of Shared Disk Groups
Default activation of shared disk groups involves a local in-kernel policy that differs between
platforms. This means that, regardless of the platform on which the disk group was created, the
importing platform will have platform-specific behavior with respect to activation of shared disk
groups. Specifically, with the exception of HP-UX, importing a shared disk group results in the
volumes being active and enabled for shared-write. In the case of HP-UX, the shared volumes will
be inactive and require other actions to activate them for shared-write operations.