Veritas Storage Foundation 5.1 SP1 Cluster File System Administrator"s Guide (5900-1738, April 2011)

as dd execute without any reservation, and can damage a file system mounted
from another node. Before running this kind of command on a file system, be sure
the file system is not mounted on a cluster. You can run the mount command to
see if a file system is a shared or local mount.
Time synchronization for Cluster File Systems
SFCFS requires that the system clocks on all nodes are synchronized using some
external component such as the Network Time Protocol (NTP) daemon. If the
nodes are not in sync, timestamps for creation (ctime) and modification (mtime)
may not be consistent with the sequence in which operations actually happened.
Growing a Storage Foundation Cluster File System
There is a master node for CVM as well as a primary for SFCFS. When growing a
file system, you grow the volume and slaves from the CVM master, and then grow
the file system from any SFCFS node. The CVM master and the SFCFS node can
be different nodes.
To determine the primary file system in a cluster
■ To determine the primary file system in a cluster, type the following command:
# fsclustadm -v showprimary mount_point
To determine that the current node is the master CVM node
■ To determine if the current node is the master CVM node, type the following
comannd:
# vxdctl -c mode
To actually increase the size of the file system
1
On the master CVM node, type the following command:
# vxassist -g shared_disk_group growto volume_name newlength
2
On any SFCFS node, type the following command:
# fsadm -F vxfs -b newsize -r device_name mount_point
Administering Storage Foundation Cluster File System and its components
Administering CFS
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