HP StorageWorks Clustered File System 3.2.1 Windows Storage Server Edition Administration Guide (February 2006)

Chapter 8: Configure PSFS Filesystems 78
Suspend a Filesystem for Backups
The psfssuspend utility suspends a PSFS filesystem in a stable, coherent,
and unchanging state. While the filesystem is in this state, you can copy it
for backup and/or archival purposes. The filesystem is essentially
unusable while it is suspended; however, applications that can tolerate
extended waits for I/O do not need to be terminated.
The psfsresume utility restores a suspended filesystem. The psfssuspend
and psfsresume utilities affect the specified filesystem on all servers
where it is mounted; however, the utilities must be executed on the same
server.
To suspend a filesystem, issue a command in the following form on one
server that has mounted the filesystem.
psfssuspend <mountpoint>
The following example uses a drive letter to identify the filesystem:
psfssuspend X:
The next example uses a mount path:
psfssuspend c:\psfs_mount\
The psfssuspend command prevents modifications to the filesystem and
forces any changed blocks associated with the filesystem to disk. The
command performs these actions on all servers that have mounted the
filesystem and then returns successfully.
Any process attempting to modify a suspended filesystem will block
until the filesystem is resumed. These blocked processes may hold
resources, thereby causing other processes to block waiting on these
resources.
When you have completed the backups, use the psfsresume utility to
resume the suspended filesystem. Issue the command from the server
where you executed psfssuspend. Following are some examples:
psfsresume X:
psfsresume c:\\psfs_mount\