Checking the KVM setup

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Ensure that when the IBM® Storage Protect Snapshot KVM setup uses Block Device Mapping, the LUNs are mapped to the KVM guest as multipath devices. The LUNs must be visible as multipath devices inside the KVM guest. Run the multipath command to check your setup for KVM.

Procedure

To verify your KVM setup, run the multipath command from within the KVM guest.

The command output looks similar to the following example:

kvm-guest:~ # multipath -ll
mpathat (360050768018205de4000000000001949) dm-7 IBM     ,2145
size=2.0G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  `- 3:0:0:3 sdf 8:80  active ready running

In the example, 360050768018205de4000000000001949 is the LUN identifier. It is a unique number that must not be overwritten by the KVM stack. The product storage identifier must be visible inside the KVM guest. In the example, this identifier is IBM ,2145.