4.1.0 HP PolyServe Software command reference guide (T5392-96071, October 2010)

psfssuspend.exe – suspend a PSFS filesystem
Synopsis
bin\psfssuspend <mountpoint>
Description
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. When copying directly from a suspended device, be sure
to use the raw device to ensure that all blocks copied are up-to-date. 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 should be executed on only one server in the cluster.
NOTE:
While a filesystem is suspended, existing memory-mapped applications such as MS
DTC will continue to flush dirty pages to disk until the file allocation is full. However,
memory-mapped applications cannot extend the file while the filesystem is suspended.
To suspend a filesystem, issue the following command 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.
Cluster commands52