VERITAS Volume Manager 3.1 Migration Guide

Command Differences
Existing Features in LVM not supported in VxVM
Chapter 3 81
Logical Volume Timeout (LVTO). If
LVTO on a logical volume is set to zero,
which is the default, an I/O is retried
forever.
NOTE LVTO is also
known as the
lvchange -t
value; it is not the
same as the
pvchange -t
value.
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.
Bad media block relocation. VxVM relocates whole subdisks.
Smaller granularity relocation is not
supported. The bad block reallocation
feature does not exist in VxVM.
Table 3-4LVM features and VxVM equivalents
LVM Feature VxVM Equivalent