Removing a Snapshot
Remove a snapshot to permanently delete it from the everRun system. You can remove a snapshot from the Virtual Machines page or from the Snapshots page.
- When you remove a VM snapshot, you also remove all of its associated volume snapshots, which frees up storage space in the volume containers that contain those volume snapshots.
- If you remove all volume and volume snapshot contents from a volume container, the system automatically removes the container from the system, which frees up space in the storage group.
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When you remove a snapshot, the system must coalesce the snapshot by merging it with the next oldest snapshot. While the system is coalescing snapshots:
- A user cannot create a new snapshot in the everRun Availability Console. If you try, an error indicates that the system is busy.
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A user cannot start the VM associated with the snapshot(s) if the VM is currently stopped. The Start button is temporarily unavailable on the Virtual Machines page of the everRun Availability Console. So, if you need to delete a snapshot, do so while its associated VM is running, or allow the associated VM (if stopped) to remain stopped.
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A user must not shutdown a VM associated with the coalescing snapshot(s). You must not shut down the associated VM from the guest operating system because doing so causes data corruption. You cannot shut down the VM using the everRun Availability Console because the console prevents you from doing so.
- A user cannot perform tasks that require the storage space occupied by the snapshot(s) until the coalescing operation is complete and the snapshot(s) are finally removed from the volume container. For example, this could prevent you from resizing a volume.
Avoid removing snapshots if you have an immediate need to perform any of these operations. After you remove a snapshot, wait at least 10-15 minutes before attempting any of these operations, or retry the operation if needed. You may need to wait much longer depending on the size of your volumes, the amount of VM activity, and the number of snapshots you remove.
For information about how to monitor coalescing operations that are underway, see KB0013465.
To remove a snapshot (Snapshots page)
- On the Snapshots page, select a snapshot to remove.
- In the bottom pane, click Delete.
- A confirmation window appears. Click Yes to continue deleting the snapshot or click No to stop the deletion.
To remove a snapshot (Virtual Machines page)
- In the top pane of the Virtual Machines page, select the VM that contains the snapshot you want to remove.
- In the bottom pane, click the Snapshots tab.
- Select the snapshot that you want to remove.
- In the Action column, click Remove.
- A confirmation window appears. Click Yes to continue deleting the snapshot or click No to stop the deletion.
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