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.
| 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 that are 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.