Knowledge BaseTroubleshootingCreating an image from a VM instance is slow

Creating an image from a VM instance is slow

TroubleshootingZCF · CloudVersions3.x-5.5.30Article IDKB-100235Updated2026-08-19

Issue/Introduction

This article describes how to troubleshoot slow image creation from a VM instance. It applies to the initial diagnosis and resolution of similar issues in ZStack Cloud.

Environment

  • Product: ZCF
  • Component: Cloud
  • Version: 3.x-5.5.30

Possible causes

Primary storage is Ceph, while image storage is ImageStore.

Note:

When using Ceph primary storage, it is recommended that you add Ceph image storage.

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Creating an image from a VM instance is slow | KB-100235 | ZStack Resource Center