HP Serviceguard Storage Management Suite Version A.01.01 Release Notes, April 2008

HP Serviceguard Storage Management Suite Version A.01.01 Release Notes
Compatibility Information and Installation Requirements
Chapter 134
Known Problems and Workarounds
The following describes known problems with HP Serviceguard Storage
Management Suite Version A.01.01 and workarounds for them. However,
this is subject to change without notice. For the most current information
contact your HP support representative or the Hewlett-Packard IT
Resource Center for the latest information.
Product Issues and Limitations
The following describes known problems with products included with HP
Serviceguard Storage Management Suite Version A.01.01 and
workarounds for them. This is subject to change without notice.
SCSI-3 Persistent Reservation Support
Veritas Cluster Server (VCS) relies on SCSI-3 Persistent Reservation
being supported on the storage. This is part of the Veritas split brain
prevention. HP Serviceguard uses a different and more robust method to
prevent split brain, there is no need for SCSI-3 Persistent Reservation on
the storage.
The mknod Command Is Not Supported with CFS
You cannot use the mknod command to create devices on a cluster
mounted file system - attempts to use the mknod command will return
Invalid argument.
Use of mount Commands for CFS Environments
Once the disk group and mount point multi-node packages are created in
Serviceguard, it is critical to use the cfs commands, including
cfsdgadm, cfsmntadm, cfsmount, and cfsumount. If the general
commands such as mount and umount are used, it could cause serious
problems such as writing to the local file system instead of the cluster file
system.
Any form of the mount command (for example, mount -o cluster,
dbed_chkptmount, or sfrac_chkptmount) other than cfsmount or
cfsumount in a HP Serviceguard Storage Management Suite bundle
environment with CFS should be done with caution. These non-cfs
commands could cause conflicts with subsequent command operations on