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

Chapter 8: Configure PSFS Filesystems 68
Crash Recovery
When a server using a PSFS filesystem either crashes or stops
communicating with the cluster, another server in the cluster will replay
the filesystem journal to complete any transactions that were in progress
at the time of the crash.
Users on the remaining servers will notice a slight delay while the journal
is replayed. Typically the recovery procedure takes only a few seconds.
The recovery process restores only the structural metadata information.
Any regular file data in the blocks that were in use when the crash
occurred may be corrupted or lost.
The server that crashed or lost communication with the cluster will not be
able to access the filesystem until it is rebooted.
Create a Filesystem
A PSFS filesystem can be created on a basic volume (a psd device) or a
dynamic volume (a psv device). You can create a filesystem from one
server in the cluster using either the HP CFS Management Console or the
command line. The filesystem can then be monted on all servers in the
cluster that can access it via the SAN.
NOTE: The minimum size for a PSFS filesystem is 64 MB.
Before creating a filesystem, verify the following:
• The disk is partitioned appropriately. If you want to change the
partition layout, you will need to deport the disk, modify the partition
layout with the Windows Disk Management utility, and then reimport
the disk.
• The volume to be used for the filesystem does not contain needed
data. The new filesystem will write over an existing filesystem
currently on the volume.