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Dell PowerVault MD 32XX/36XX Series Storage Arrays CLI Guide

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Removing Persistent Reservations

Persistent reservations preserve virtual disk registrations and prevent hosts, other than the host defined for the virtual disk, from accessing the virtual disk. You must remove persistent reservations before you perform the following changes to your configuration:
  • Change or delete logical unit number (LUN) mappings on a virtual disk holding a reservation.
  • Delete virtual disk groups or virtual disks that have any reservations.
To determine which virtual disks have reservations, run the following command: 
show (allVirtualDisks | virtualDisk
                                 [virtualDiskName] | virtualDisks [virtualDiskName1
                                 ... virtualDiskNameN]) reservations
To clear persistent virtual disk reservations, run the following command: 
clear (allVirtualDisks |
                                 virtualDisk[virtualDiskName] | virtualDisks
                                 [virtualDiskName1" ... "virtualDiskNameN])reservations

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