System information

Delete PSA Claim Rules
Use the vSphere CLI to remove a PSA claim rule from the set of claim rules on the system.
Procedure
1 Delete a claim rule from the set of claim rules.
esxcli corestorage claimrule delete -r
<claimrule_ID>
For information on the options that the command takes, see “esxcli corestorage Command-Line Options,”
on page 86.
NOTE By default, the PSA claim rule 101 masks Dell array pseudo devices. Do not delete this rule, unless
you want to unmask these devices.
2 Remove the claim rule from the ESX/ESXi system.
esxcli corestorage claimrule load
Mask Paths
You can prevent the ESX/ESXi host from accessing storage devices or LUNs or from using individual paths to
a LUN. Use the vSphere CLI commands to mask the paths.
When you mask paths, you create claim rules that assign the MASK_PATH plugin to the specified paths.
Procedure
1 Check what the next available rule ID is.
esxcli corestorage claimrule list
The claim rules that you use to mask paths should have rule IDs in the range of 101 200. If this command
shows that rule 101 and 102 already exist, you can specify 103 for the rule to add.
2 Assign the MASK_PATH plugin to a path by creating a new claim rule for the plugin.
esxcli corestorage claimrule add -r
<claimrule_ID>
-t
<type>
<required_option>
-P
<MASK_PATH>
For information on command-line options, see “esxcli corestorage Command-Line Options,” on
page 86.
3 Load the MASK_PATH claim rule into your system.
esxcli corestorage claimrule load
4 Verify that the MASK_PATH claim rule was added correctly.
esxcli corestorage claimrule list
5 If a claim rule for the masked path exists, remove the rule.
esxcli corestorage claiming unclaim
<type>
<required_option>
6 Run the path claiming rules.
esxcli corestorage claimrule run
After you assign the MASK_PATH plugin to a path, the path state becomes irrelevant and is no longer
maintained by the host. As a result, commands that display the masked path's information might show the
path state as dead.
Appendix B Managing Storage Paths and Multipathing Plugins
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