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Loading and unloading the file system module

The vxfs file system module automatically loads on the first reference to a VxFS file system; this occurs when a user tries to mount a VxFS file system.

In some instances, you may find it efficient to load the file system module manually. For example, some larger class systems can have many dual interface I/O cards with multiple disk chains attached. The device interrogation process when such a system is rebooted can be very time consuming, so to avoid doing a reboot, use the modprobe command to load the vxfs module:

# modprobe vxfs ; modprobe vxportal ; modprobe fdd

Do not use the insmod command to load the vxfs module as insmod does not examine the module configuration file /etc/modprobe.conf.

To determine if the modules successfully loaded, use the lsmod command as shown here:

# lsmod | grep vxportal

vxportal 2952 0

vxfs 3427960 0 fdd vxportal

# lsmod | grep fdd

fdd 67212 0 (unused)

vxfs 3427960 0 [fdd vxportal]

# lsmod | grep vxfs

vxfs 3427960 0 [fdd vxportal]

The first field in the output is the module name. You can unload the modules by entering:

# rmmod fdd

# rmmod vxportal

# rmmod vxfs

The rmmod command fails if there are any mounted VxFS file systems. To determine if any VxFS file systems are mounted, enter:

# df -T | grep vxfs