You can suspend write activity to a file system by using the gfs_tool freeze command. Suspending write activity allows hardware-based device snapshots to be used to capture the file system in a consistent state. The gfs_tool unfreeze command ends the suspension.
Start Suspension
| gfs_tool freeze MountPoint | 
End Suspension
| gfs_tool unfreeze MountPoint | 
Specifies the file system.
This example suspends writes to file system /gfs.
| gfs_tool freeze /gfs | 
This example ends suspension of writes to file system /gfs.
| gfs_tool unfreeze /gfs |