HP CIFS Server 3.0g Administrator's Guide verison A.02.03.01

Stacking CFSM
CFSM is stacked onto the file system based on the contents of a template file. This template is
managed and defined through the use of the fstadm command described below. The predefined
CFSM template, cfsmtemplate, is automatically created when the HP CIFS product is installed.
The template that is provided with HP CIFS Server is usable on the specific file system that is
supported with CFSM.
CFSM can be stacked onto the physical file system when a file system is mounted, either through
the mount command or by specifying it in /etc/fstab.
For more information on the template and using CFSM with other stackable file system modules,
see the “Using CFSM with Other Stackable File System Modules” section and the fstadm man
page.
Stacking CFSM Using the mount Command
CFSM can be added to any locally mounted file system (like VxFS or HFS). To add CFSM to a
file system, the file system must first be unmounted, then execute the mount command with the
"-o stackfs=cfsmtemplate" option to stack and mount the file system.
For example, the following command stacks CFSM onto the physical file system using the
cfsmtemplate template, when mounting the physical file system mounted on /mnt:
mount -F vxfs -o stackfs=cfsmtemplate /dev/dsk/c1t2d3 /mnt
Unstacking CFSM Using the umount Command
No special option is needed to unstack CFSM. Use the umount command to unstack and unmount
the physical file system.
For example, the following command unstacks CFSM when unmounting the physical file system
mounted on /mnt:
umount /mnt
Configuring CIFS for CFSM in /etc/fstab
If the system is rebooted, CFSM will no longer be used on that file system. To use a stackable
CFSM on a file system permanently (across reboots), add the "stackfs=cfsmtemplate" option
to the file entry in the /etc/fstab file. This file contains the information about all the currently
mounted file systems.
For example, the following entry in /etc/fstab uses a stackable CFSM on the physical file
system mounted on /mnt:
/dev/dsk/c1t5d6 /mnt vxfs stackfs=cfsmtemplate 0 2
Configuring CIFS for CFSM in smb.conf
To use CFSM, you must configure the following parameters in smb.conf properly: They can
be configured globally or on a per-share basis. The global parameter is set to the default value
for all shares. The share specific parameter setting can override the global default setting for the
individual shares. Refer to the smb.conf man pages for details.
• locking: This boolean variable controls whether locking will be performed by the server
in response to lock requests from the client. You must set this option to yes (the default
setting).
• posix locking: The SMBD daemon maintains the database of CIFS file locks obtained
by SMB clients. posix locking is a boolean variable that controls whether the CIFS Server
maps the CIFS file locks to POSIX locks. You must Set this option to yes (the default setting).
156 CIFS File System Module (CFSM) Support