HP-UX Logical Volume Manager and MirrorDisk/UX Release Notes HP-UX 11i v3 (September 2010)

Contents
Logical Volume Manager and MirrorDisk/UX Release Notes...............................4
About this document.................................................................................................................4
LVM and MirrorDisk/UX overview...............................................................................................4
Overview of changes...........................................................................................................4
New and changed features in this release...................................................................................4
New features......................................................................................................................4
Cluster Device Special Files..............................................................................................4
Changed features................................................................................................................4
Snapshot enhancements...................................................................................................4
vgchange enhancement...................................................................................................5
Deprecated or obsolete features.............................................................................................5
Known problems fixed in this version...........................................................................................5
Known problems and limitations.................................................................................................6
Known problems..................................................................................................................6
Auto-preallocation generates error messages in syslog.........................................................6
After an lvextend failure the deletion of a space-efficient snapshot might cause a panic ...........7
Panic during first snapshot creation for a logical volume while raw I/Os are in progress...........7
Automatic increase of pre-allocated extents does not increase by default threshold value for
striped snapshot..............................................................................................................7
Limitations...........................................................................................................................8
Installation requirements............................................................................................................8
Required hardware..............................................................................................................8
Required software................................................................................................................8
Required patches.................................................................................................................8
Mass Storage Critical Resource Analysis.............................................................................9
mkfs and mkboot commands............................................................................................9
HP Serviceguard.............................................................................................................9
VxVM 4.1 commands......................................................................................................9
Required disk space.............................................................................................................9
Compatibility issues..................................................................................................................9
Version 2.x volume groups....................................................................................................9
Moving from HP-UX 11i v2 to HP-UX 11i v3............................................................................10
Moving volume groups from HP-UX 11i v3 to previous HP-UX releases.......................................10
Sharing volume groups in an HP Serviceguard cluster.............................................................11
Related documentation............................................................................................................11
Software Availability in Native Languages.................................................................................12
Contents 3