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Changing the root volume

About changing the root volume  Top

You might want to change the storage system's root volume, perhaps to migrate your root volume from a traditional volume to a FlexVol volume. Every storage system must have a root volume; therefore, you must always have one volume designated as the root volume.

Changing the root volume of a storage system  Top

You can change which volume on your storage system is used as the root volume.

Note
To change your root volume from a traditional volume to a FlexVol volume or from a FlexVol volume to a traditional volume, use the procedure outlined in the chapter about volumes in the Storage Management Guide.

To change the root volume of a storage system, complete the following steps.

Step

Action

1

Identify an existing volume to use as the new root volume, or create the new root volume using the vol create command.

For more information about creating volumes, see the Storage Management Guide.

Note
The required minimum size for the root volume varies depending on the storage system model. If the volume is too small to become the new root volume, you are prevented from setting the root option.

For more information, see Root volume size and space guarantee requirements.

2

Using ndmpcopy, copy the /etc directory and all of its subdirectories from the current root volume to the new root volume. For more information about ndmpcopy, see the Data Protection Tape Backup and Recovery Guide.

3

Enter the following command:

vol options vol_name root

vol_name is the name of the new root volume.

Note
After a volume is designated to become the root volume, it cannot be brought offline or restricted.

4

Enter the following command to reboot the storage system:

reboot

Result

When the storage system finishes rebooting, the root volume is changed to the specified volume.

5

Update the httpd.rootdir option to point to the new root volume.

About the root option for aggregates  Top

Besides the volume root option that you use to determine which volume will be the root volume after the next storage system reboot, there is also an aggregate root option. The aggregate root option is used only when, for some reason, the storage system cannot determine which volume to use as the root volume.

Note
You are advised not to change the value of the root option for any aggregate unless instructed to do so by technical support.

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