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Restoring the root volume of an SVM

If the root volume of a Storage Virtual Machine (SVM) becomes unavailable, clients cannot mount the root of the namespace. In such cases, you must restore the root volume by promoting another volume to facilitate data access to the clients.

About this task

When the SVM root volume becomes unavailable, you can restore the root volume by promoting another volume, which does not have other volumes junctioned to it.

For SVMs with FlexVol volumes, you can promote one of the following volumes as the root volume:

Note: If you want to restore the root volume of an SVM with Infinite Volume, you must contact technical support.

Starting from clustered Data ONTAP 8.2, SVM root volume is created with 1 GB size to prevent any failures when mounting any volume in the SVM root volume due to lack of space or inodes. Therefore, if you are promoting a new FlexVol volume, it should be at least 1 GB in size.

Steps

  1. Depending on the type of volume you select for promoting a root volume, perform the appropriate action:
    If you want to promote... Perform the following tasks...
    A load-sharing mirror as the root volume of an SVM Promoting load-sharing mirror copy
    A data-protection mirror as the root volume of an SVM Promoting data-protection mirror copy
    A new FlexVol volume Promoting new FlexVol volume
  2. Use the volume mount command to remount the new root volume.
    For more information about these commands, see the man pages.

Result

When the new volume is promoted as the SVM root volume, the other data volumes get associated with the new SVM root volume.