HP Serviceguard Storage Management Suite Version A.02.00 for HP-UX 11i v3 Release Notes, 3rd Edition, November 2008

creating the /etc/fs/vxfs/vxfs_noreorg_config file (see the fsadm_vxfs(1M)
manual page)
NOTE: For more information on VxFS features that are supported with SG SMS version 2.0 for
HP-UX 11i v3 bundles, see the Veritas™ File System Release Notes HP-UX 11i v3 available on the
HP Serviceguard Storage Management Suite media and also at: http://docs.hp.com/en/
oshpux11iv3.html#VxFS for more information.
What’s New with Veritas Volume Manager (VxVM)
As of April 2008, the following new features and enhancements included with VxVM are
supported in the SG SMS version 2.0 for HP-UX 11i v3 bundles:
• Large Hostname Support — support of hostnames up to 31 characters in length
• Default Size of Private Region Increased — from 1 MB to 32 MB
• Disk Group Import Changed — a disk group can be imported without using the vxdg import
command -foption, if all of the disks that were visible the last time the disk group was
successfully imported are accessible
• Faster Startup Time — the time it takes to start the VxVM configuration daemon (vxconfigd)
for device discovery, to initialize dynamic multipathing, and to import disk groups has been
significantly reduced
• Faster Cluster Node Joins
• Remote Mirror Improvements
• Dynamic Multipathing (DMP) Enhancements:
— faster failure detection and recovery - the vxdmpadm command can be used to adjust
the I/O error recovery and I/O throttling mechanisms on individual paths
— the values of most DMP tunables can be set using the vxdmpadm settune command
— retry period for Persistent Group Reservations (PGR)
— retry period for handling transient errors
• Linked Break-off Snapshot Volumes — a new variant of the third-mirror break-off snapshot
• Volume Tag Changes — volumes can be tagged with an arbitrary tag name and an optional
tag value - multiple tags can be associated with a single volume
• Disk Tag Changes — disks can be tagged with an arbitrary tag name and optional tag value
- multiple tags can be associated with a single disk.
• Data Migration Enhancement — the vxassist, vxevac and vxsd commands have been
enhanced to allow data to be migrated at the volume, disk or subdisk level respectively
• Raw I/O Access — a mechanism is provided to allow access to the raw device nodes of the
component volumes of a volume set
• Increased Maximum Number of Component Volumes in a Volume Set — the maximum
number of component volumes in a volume set has been increased to 2048
• Cloned Disk Import Improvements — the vxdisk and vxdg commands have been enhanced
to allow cloned disks to be identified, and more easily managed
• Intelligent Storage Provisioning (ISP) Enhancements:
— the vxassist command can be used instead of the vxvoladm command to create ISP
volumes as well as non-ISP volumes - any vxassist specification attributes are
converted into equivalent ISP rules
— creation of a large number of volumes in a single operation, and retrieval of information
have been speeded up
— annotation of storage devices can be performed by assigning tags and optional tag
values to disks and LUNs
— the vxassist printrules or vxvoladm printrules commands can be used to
display the raw set of ISP rules that were used to allocate storage to a volume
14 HP Serviceguard Storage Management Suite Version A.02.00 for HP-UX 11i v3 Release Notes