How to perform snapshot rollback using rollback disk and delete snapshot methods

This article introduces how to use the rollback disk and delete snapshot methods to perform snapshot rollback, and focuses on the specific steps. The content of this article is compact, and I hope you can gain something from it.

Rollback Disk Error

When users refer to the document "Rollback Disk" and "Delete Snapshot" methods to perform snapshot rollback, the following error message appears:

This problem is usually caused by discrepancies in disk properties or disk status. Users can refer to the following steps to try to troubleshoot and analyze:

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Check whether the instance associated with the relevant snapshot has undergone the "replace operating system" operation

After the operating system is replaced, the system disk of the instance will be automatically re-imaged with the new image. Created, the system disk disk ID will also be changed. Therefore, the original snapshot of the instance can no longer be used for rollback.

However, users can "create a custom image" based on the relevant snapshot, and then specify the custom image by "changing the operating system" to switch the instance to the corresponding snapshot state.

Check whether the instance has been stopped normally

Only when the instance has been stopped can the disk rollback operation be performed. Please refer to the following steps and go to the management console to confirm that the instance has been stopped normally:

Open [Management Console] → [ECS Console];

Locate the instance to be operated by searching or other methods ;

Click the corresponding instance ID or the "Manage" button on the far right of the corresponding instance in the instance list to enter the instance management page;

Confirm that the instance status is "Stopped".

Check whether the disk to which the snapshot belongs is an ongoing snapshot task

To ensure data consistency, if the disk to which the snapshot belongs has an ongoing snapshot task, Rollback operations will not be allowed.

Users can refer to the following steps to verify whether there are ongoing snapshot tasks:

Open [Management Console] → [ECS Console];

Locate through search, etc. Go to the instance to be operated;

Corresponding instance ID or the "Manage" button on the far right of the corresponding instance in the instance list to enter the instance management page;

Click "Snapshot of this instance" on the left lThe link switches to the snapshot management page;

Check whether there are any snapshot tasks whose "Progress" is not 100% and whose "Status" is "Unfinished";

If the user needs to forcefully terminate the relevant snapshot tasks In order to perform the disk rollback operation as quickly as possible. After selecting the corresponding snapshot, click the "Delete Snapshot" button below to terminate the snapshot task.

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