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422 Administering cluster functionality
Administering VxVM in cluster environments
The following is example output for the command vxdg list group1 on the
master:
Group: group1
dgid: 774222028.1090.teal
import-id: 32768.1749
flags: shared
version: 140
alignment: 8192 (bytes)
ssb: on
local-activation: exclusive-write
cluster-actv-modes: node0=ew node1=off
detach-policy: local
private_region_failure: leave
copies: nconfig=2 nlog=2
config: seqno=0.1976 permlen=1456 free=1448 templen=6
loglen=220
config disk c1t0d0 copy 1 len=1456 state=clean online
config disk c1t0d0 copy 1 len=1456 state=clean online
log disk c1t0d0 copy 1 len=220
log disk c1t0d0 copy 1 len=220
Note that the flags field is set to shared. The output for the same command
when run on a slave is slightly different. The local-activation and
cluster-actv-modes fields display the activation mode for this node and for
each node in the cluster respectively. The detach-policy and
private_region_failure fields indicate how the cluster behaves in the
event of loss of connectivity to the disks, and to the configuration and log copies
on the disks.
Creating a shared disk group
Note: Shared disk groups can only be created on the master node.
If the cluster software has been run to set up the cluster, a shared disk group can
be created using the following command:
# vxdg -s init diskgroup [diskname=]devicename
where diskgroup is the disk group name, diskname is the administrative name
chosen for a VM disk, and devicename is the device name (or disk access name).