List Multipathing Claim Rules for the Host

Use the esxcli command to list available multipathing claim rules.

Claim rules indicate whether the NMP, HPP, or a third-party MPP manages a given physical path. Each claim rule identifies a set of paths based on the following parameters:

• Vendor/model strings
• Transportation, such as SATA, IDE, Fibre Channel
• Adapter, target, or LUN location
• Device driver, for example, Mega-RAID

Procedure

• ♦ List the multipathing claim rules by running the esxcli storage core claimrule list --claimrule-class=MP command.
  If you do not use the claimrule-class option, the MP rule class is implied.

Example: Sample Output of the esxcli storage core claimrule list Command

Rule Class  Rule   Class    Type       Plugin     Matches
MP           10    runtime  vendor     HPP        vendor=NVMe model=*              
MP           10    file     vendor     HPP        vendor=NVMe model=*              
MP           50    runtime  transport  NMP        transport=usb
MP           51    runtime  transport  NMP        transport=sata
MP           52    runtime  transport  NMP        transport=ide
MP           53    runtime  transport  NMP        transport=block
MP           54    runtime  transport  NMP        transport=unknown
MP          101    runtime  vendor     MASK_PATH  vendor=DELL model=Universal Xport
MP          101    file     vendor     MASK_PATH  vendor=DELL model=Universal Xport
MP          200    runtime  vendor     MPP_1      vendor=NewVend model=* 
MP          200    file     vendor     MPP_1      vendor=NewVend model=* 
MP          201    runtime  location   MPP_2      adapter=vmhba41 channel=* target=* lun=* 
MP          201    file     location   MPP_2      adapter=vmhba41 channel=* target=* lun=* 
MP          202    runtime  driver     MPP_3      driver=megaraid 
MP          202    file     driver     MPP_3      driver=megaraid 
MP          65535  runtime  vendor     NMP        vendor=* model=*

This example indicates the following:

• The NMP claims all paths connected to storage devices that use the USB, SATA, IDE, and Block SCSI transportation.
• The rules for HPP, MPP_1, MPP_2, and MPP_3 have been added, so that the modules can claim specified devices. For example, the HPP claims all devices with vendor NVMe. All devices handled by the inbox nvme driver are claimed regardless of the actual vendor. The MPP_1 module claims all paths connected to any model of the NewVend storage array.
• 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.
• The Rule Class column in the output describes the category of a claim rule. It can be MP (multipathing plug-in), Filter, or VAAI.
• 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.
• The default rule 65535 assigns all unclaimed paths to the NMP. Do not delete this rule.