Multipathing configuration maximums for LVM and mp-tools

When you configure, keep in mind the maximum configuration for the logical volume manager (specifically, LVM1) for the Linux operating system.

Logical volume manager

Table 1 provides the maximum number of physical volumes, logical volumes, and paths for LVM1.
Table 1. Configuration maximums for LVM1
Object Maximum Description
Number of volume groups 99 The number of volume groups that can be defined per host
Physical volumes per volume group 256 The maximum number of physical volumes that can be assigned to one volume group
Paths per physical volume 16 The maximum number of paths to each PV
Logical volumes 256 The total number of logical volumes supported by LVM1 (because of the 256 minor number limit of the kernel)

Multipath-tools

The number of paths per physical volume is limited to eight paths with Kernel 2.6.