HP Serviceguard Storage Management Suite A.03.00 Release Notes

SG SMS 5.0.1/v3 installation fails on September 2009 OE Update Release if
Full-VxVM 5.0 (B9116CB) is installed (QXCR1000973245)
A SG SMS 5.0.1 bundle cannot be installed over Full-VxVM 5.0 (B9116CB). To install a SG SMS
5.0.1 bundle, follow these steps:
1. Upgrade to Full-VxVM 5.0.1 (B9116DB).
2. Install the SG SMS 5.0.1 bundle.
Contact your HP representative if you need assistance.
Use of HP-UX mount Commands for CFS Environments
Once disk group and mount point multi-node packages are created with Serviceguard, it is critical
to use the CFS commands, including cfsdgadm, cfsmntadm, cfsmount, and cfsumount. If
the HP-UX mount and umount commands are used, serious problems such as writing to the local
file system instead of the cluster file system could occur.
Any form of the HP-UX mount command (for example, mount -o cluster, dbed_chkptmount,
orsfrac_chkptmount) must not be used in an HP Serviceguard Storage Management Suite with
CFS environment. These non-CFS commands could cause conflicts with subsequent CFS command
operations on the file system or the Serviceguard packages. Use of HP-UX mount commands will
not create an appropriate multi-node package, which means cluster packages will not be aware
of file system changes. Instead, use the CFS commands cfsmount or cfsumount.
Guidelines for CFS Nested Mounts
A maximum of four levels of nesting is supported with CFS nested mounts. VxFS, Check Point
(ckpt), and snapshot cluster file systems are supported with CFS nested mounts. However, ckpt
and snapshot cluster file systems can only be mounted at the end of the nesting sequence, not at
the beginning or middle of the nesting sequence. CFS admin scripts changes: With the nested
mount point feature enabled, the only change in the cfsmntadm add command interface is to
specify a nested mount point in place of a normal mount point. For example:
cfsmntadm add <shared_disk_group> <shared_volume> <mount_point>
[<package_name>] <node_name>= [<mount_options>]... is now changed to:
cfsmntadm add <shared_disk_group> <shared_volume>
<mount_point/nested_mount_point> [<package_name>] <node_name>=
[<mount_options>]...
Use Case Examples
• Creating a mount point that is not nested:
cfsmntadm add cvm_dg1 lvol1 /cfs1 all=rw
• Creating a nested mount point:
cfsmntadm add cvm_dg1 lvol2 /cfs1/cfs2 all=rw (assuming cvm_dg1/lvol1
is already mounted on /cfs1, /cfs1/cfs2 becomes a nested mount point)
• Creating a ckpt nested mount point:
cfsmntadm add ckpt ckpt1 /cfs1 /cfs1/ckpt1 all=ro (if /cfs1 is a CFS mount
point, /cfs1/ckpt1 becomes a nested mount check point)
• Creating a snapshot nested mount point:
cfsmntadm add snapshot cvm_dg1 lvol3 /cfs1 /cfs1/snapshot1 snapshot1
all=ro (if /cfs1 is a CFS mount point, /cfs1/snapshot1 becomes a nested snapshot
mount point)
36 HP Serviceguard Storage Management Suite Version A.03.00 for HP-UX 11i v3 Release Notes