Troubleshooting reservation updates

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This page shows you how to resolve issues with modifying reservations of Compute Engine zonal resources.

Attempt to delete a reservation's compact placement policy

The following error occurs when you try to delete a reservation's compact placement policy before deleting the reservation.

Error message:

The resource_policy resource 'projects/PROJECT_ID/regions/REGION/resourcePolicies/COMPACT_PLACEMENT_POLICY_NAME' is already being used by 'projects/PROJECT_ID/zones/ZONE/reservations/RESERVATION_NAME'

Resolution: To delete a compact placement policy specified in a reservation, select one of the following methods:

• If you created the reservation by specifying an instance template, follow these steps:

  1. View the details of the reservation and make note of the reservation's instance template.

  2. Delete the reservation.

  3. Delete the instance template.

     Note: You can't update instance templates. If you delete a compact placement policy specified in an instance template, attempting to use the template to create reservations or virtual machine (VM) instances causes errors.

  4. Delete the compact placement policy.

• If you created the reservation by specifying properties directly, follow these steps:

  1. Delete the reservation.

  2. Delete the compact placement policy.

Attempt to downsize a specific reservation to less VMs than the targeted number

The following error occurs when you try to downsize a specific reservation to a number of VMs that is lower than the number of VMs that are targeting the reservation for consumption.

Error message:

The resize instance count cannot be lower than the in use count for a specific reservation.

Resolution: Try one of the following:

• Make sure that the number of reserved VMs in a specific reservation is equal or greater than the number of VMs that are targeting the reservation for consumption.

• To downsize a specific reservation to reserve less VMs than the number of VMs that are targeting the reservation for consumption, follow these steps:

  1. Make the number of VMs in the specific reservation equals the number of VMs that are targeting the reservation by doing one or more of the following:

     • Delete VMs.

     • Update the reservationAffinity property of VMs.

  2. Stop and start any remaining VMs.