LVM Migration from Legacy to Agile Naming Model

In previous HP-UX releases (that is, HP-UX 11i v2 or earlier), a specific path or all paths to a physical volume can
be detached (disabled) using –n and –N options of the pvchange command, respectively. The detached path or
the physical volume will not be accessed by LVM, but remain configured in the volume group. For additional
information on replacing disks configured under LVM, see the
For More Information section for white papers LVM
Online Disk Replacement (LVM OLR) and When Good Disks Go Bad: Dealing with Disk Failures under LVM.
In HP-UX 11i v3, detaching an entire physical volume using the pvchange –a N command, in order to perform an
online disk replacement is still supported. The behavior is the same for both legacy and persistent DSFs and is
compatible with previous releases.
However, unless native multi-pathing has been disabled and only legacy DSFs are configured for the volume
group, the pvchange –a n command will not stop I/O operations for that path as it did in earlier releases.
Instead, use the scsimgr command.
7