Veritas 4.1 Installation Guide (HP-UX 11i v3, February 2007)

Table 6-4 LVM Features and VxVM equivalents
VxVM EquivalentLVM Feature
VxVM has no equivalent feature. The disk group feature
of VxVM combines the logical volume group (VG) and
physical volume group (PVG) of LVM.
Physical volume groups
Powerfail timeout feature: After the EPOWERF error
condition disappears, the reconfiguration command must
be run manually to re-enable the paths and the disks
which were disabled due to EPOWERF error. See the
pfto feature in the vxdctl (1M) manual page for more
information.
Powerfail timeout feature: Automatically re-enable a disk
or a path to a disk, after temporary error condition
(resulting in EPOWERF error on I/Os) disappears on that
disk or path.
VxVM does not support the LVTO feature. However,
VxVM supports the powerfail timeout feature to handle
transient error conditions. VxVM tries an I/O only on
active paths to a disk; hence, it never retries indefinitely.
See the powerfail timeout feature and also refer to the
pfto feature in the vxpfto manual pages for more
details.
Logical Volume Timeout (LVTO). If LVTO on a logical
volume is set to zero, which is the default, an I/O is retried
forever.
VxVM relocates whole subdisks. Smaller granularity
relocation is not supported. The bad block reallocation
feature does not exist in VxVM because the vectoring of
bad blocks is now done by most hardware.
Bad media block relocation.
LVM Features With no VxVM Equivalent 65