Veritas Storage Foundation 5.0 Cluster File System Administration Guide Extracts for HP Serviceguard Storage Management Suite, Second Edition, May 2008

Cluster File System Administration

Snapshots for Cluster File Systems

Chapter 3

version 7 layout

104857600 sectors, 52428800 blocks of size 1024, log size 16384

blocks

unlimited inodes, largefiles not supported

52428800 data blocks, 52399152 free data blocks

1600 allocation units of 32768 blocks, 32768 data blocks

2. Mount the file system on all nodes (following previous examples, on system01 and

system02):

# cfsmntadm add cfsdg vol1 /mnt1 all=cluster

# cfsmount /mnt1

The cfsmntadm command adds an entry to the cluster manager configuration, then

the cfsmount command mounts the file system on all nodes.

3. Add the snapshot on a previously created volume (snapvol in this example) to the

cluster manager configuration:

# cfsmntadm add snapshot cfsdg snapvol /mnt1 /mnt1snap \

system01=ro

NOTE The snapshot of a cluster file system is accessible only on the node where it is

created; the snapshot file system itself cannot be cluster mounted.

4. Mount the snapshot:

# cfsmount /mnt1snap

5. A snapped file system cannot be unmounted until all of its snapshots are

unmounted. Unmount the snapshot before trying to unmount the snapped cluster

file system:

# cfsumount /mnt1snap