Repair Data Parity

03/21/2022 Contributors

The Repair Data Parity command repairs data parity errors.

Supported Arrays

This command applies to any individual storage array, including the E2700, E5600, E2800, E5700, EF600 and EF300 arrays, as long as all SMcli packages are installed.

Roles

To execute this command on an E2800, E5700, EF600, or EF300 storage array, you must have the Storage Admin role.

Context

Before utilizing this command, consult with NetApp Support for guidance on the affected firmware, drives, and RAID stripe.

Syntax

repair volume[volumeName] parity
   [startingLBA=LBAvalue]
   [endingLBA=LBAvalue]
   [repairMethods=(repairMethod . . . repairMethod)]
           Space delimited list where possible repair methods are: reconstruct, unmap, updateP, updateQ, updateData, and writeZeros
   [repairPI=(TRUE|FALSE)]
   [suspectDrives=(trayID1,[drawerID1,]slotID1 . . . trayIDn,[drawerIDn,]slotIDn)]
   [timeout=(0-65535)]

Parameters

Parameter Description

Parameter	Description
`volume`	The name of the volume for which you are repairing parity. Enclose the volume name in square brackets ([ ])
`startingLBA`	The starting logical block address.
`endingLBA`	The ending logical block address.
`repairMethods`	The method used to repair the parity error. Available methods include: reconstruct: Reconstructs drives specified under the `suspectDrives` parameter. unmap: For R5/R6 dulbe volumes, used to make a R5/R6 RAID stripe unmapped updateP: Used to fix the data parity mismatch type. updateQ: Used to fix the data parity mismatch type. updateData: Used to fix the data parity mismatch type. writeZeros: For R5/R6 dulbe volumes, used when an unexpected RAID5/6 stripe containing a mix of mapped and unmapped data is found. Takes the unmapped blocks in the stripe and write zeros to it and then updates parity
`repairPI`	Set to TRUE to repair PI in the extent beginning at startingLBA.
`suspectDrives`	Used to specify the drives for reconstruction.
`timeout`	The length of time in minutes that you want to run the operation.

volume

The name of the volume for which you are repairing parity. Enclose the volume name in square brackets ([ ])

startingLBA

The starting logical block address.

endingLBA

The ending logical block address.

repairMethods

The method used to repair the parity error. Available methods include:

reconstruct: Reconstructs drives specified under the suspectDrives parameter.
unmap: For R5/R6 dulbe volumes, used to make a R5/R6 RAID stripe unmapped
updateP: Used to fix the data parity mismatch type.
updateQ: Used to fix the data parity mismatch type.
updateData: Used to fix the data parity mismatch type.
writeZeros: For R5/R6 dulbe volumes, used when an unexpected RAID5/6 stripe containing a mix of mapped and unmapped data is found. Takes the unmapped blocks in the stripe and write zeros to it and then updates parity

repairPI

Set to TRUE to repair PI in the extent beginning at startingLBA.

suspectDrives

Used to specify the drives for reconstruction.

timeout

The length of time in minutes that you want to run the operation.

Minimum Firmware Level

8.63