6.7

n
You can use the MASK_PATH module to hide unused devices from your host. By default, the PSA
claim rule 101 masks Dell array pseudo devices with a vendor string DELL and a model string
Universal Xport.
n
The Rule Class column in the output describes the category of a claim rule. It can be MP
(multipathing plug-in), Filter, or VAAI.
n
The Class column shows which rules are defined and which are loaded. The file parameter in the
Class column indicates that the rule is defined. The runtime parameter indicates that the rule has
been loaded into your system. For a user-defined claim rule to be active, two lines with the same rule
number must exist, one line for the rule with the file parameter and another line with runtime.
Several default system-defined claim rules have only one line with the Class of runtime. You cannot
modify these rules.
n
The default rule 65535 assigns all unclaimed paths to the NMP. Do not delete this rule.
Add Multipathing Claim Rules
Use the esxcli commands to add a multipathing PSA claim rule to the set of claim rules on the system.
For the new claim rule to be active, you first define the rule and then load it into your system.
Examples when you add a PSA claim rule include the following:
n
You load a new third-party MPP and must define the paths that this module claims.
n
You must enable the native HPP.
You cannot create rules where two different plug-ins claim paths to the same device. Your attempts to
create these claim rules fail with a warning in vmkernel.log.
Prerequisites
Install vCLI or deploy the vSphere Management Assistant (vMA) virtual machine. See Getting Started with
vSphere Command-Line Interfaces. For troubleshooting, run esxcli commands in the ESXi Shell.
Procedure
1 To define a new claim rule, use the following command:
esxcli storage core claimrule add
The command takes the following options:
Option Description
-A|--adapter=<adapter>
Adapter of the paths to use. Valid only if --type is location.
-u|--autoassign
Adds a claim rule based on its characteristics. The rule number is not required.
-C|--channel=<channel>
Channel of the paths to use. Valid only if --type is location.
vSphere Storage
VMware, Inc. 223