On July 5, 2026, ZStack Cloud officially released its latest Long Term Support (LTS) version, ZStack Cloud 4.8.38, bringing a series of fixes and improvements. Details are as follows.

ZStack Cloud 4.8.38 updates and optimizes VM-related host components, ARM platform adaptation, and monitoring collection logic to improve host runtime behavior and monitoring collection efficiency.

Jira: ZSTAC-80539, ZSTAC-85853, ZSTAC-68234, etc.

ZStack Cloud 4.8.38 optimizes network configuration synchronization for VPC firewall and SLB scenarios to reduce the impact of configuration inconsistencies on service access paths.

Jira: ZSTAC-86026, ZSTAC-86000

ZStack Cloud 4.8.38 optimizes network configuration synchronization, security group policy delivery, and tenant-side network resource management to improve cloud network consistency and controllability.

Jira: ZSTAC-85848, ZSTAC-85849, ZSTAC-85878, etc.

ZStack Cloud 4.8.38 optimizes resource ownership handling after Ceph cross-cluster cold migration to ensure that VM startup and data volume attachment work as expected after migration.

Jira: ZSTAC-86024, ZSTAC-86104

ZStack Cloud 4.8.38 optimizes failover checks and heartbeat handling in Ceph HA and shared storage HA scenarios to reduce false positives in abnormal scenarios.

Jira: ZSTAC-84588, ZSTAC-85590

ZStack Cloud 4.8.38 optimizes logical volume, lockspace, and capacity state handling in SharedBlock/SBLK scenarios to improve the success rate of VM startup, migration, clone, capacity expansion, and primary storage detach operations.

Jira: ZSTAC-65518, ZSTAC-86010, ZSTAC-74769, etc.

ZStack Cloud 4.8.38 optimizes state checks, monitoring collection, task handling, database synchronization, and VIP switchover logic in dual-management-node environments to improve HA reliability.

Jira: ZSTAC-86006, ZSTAC-86009, ZSTAC-83246, etc.

ZStack Cloud 4.8.38 optimizes elastic bare metal resource access, deployment network handling, and dependency processing to improve the deployment and O&M experience for elastic bare metal environments.

Jira: ZSTAC-85866, ZSTAC-86103, ZSTAC-86165, etc.

ZStack Cloud 4.8.38 optimizes VM component compatibility in backup and CDP scenarios to reduce the risk of abnormal VM exits during data protection tasks.

Jira: ZSTAC-86013, ZSTAC-86016

ZStack Cloud 4.8.38 optimizes task handling for backup, CDP, snapshot, and HA scenarios to improve data consistency and task reliability during data protection and failure recovery.

Jira: ZSTAC-65590, ZSTAC-86005, ZSTAC-85995, etc.

ZStack Cloud 4.8.38 optimizes pre-upgrade checks, historical data compatibility, and OS upgrade dependency handling, reducing the risk of blocked upgrades from earlier versions or OS upgrades and improving upgrade stability.

Jira: ZSTAC-74958, ZSTAC-86096, ZSTAC-77270, etc.

ZStack Cloud 4.8.38 optimizes license cleanup, verification, and historical record handling to improve the management experience in license authorization scenarios.

Jira: ZSTAC-85579, ZSTAC-66620, ZSTAC-79213, etc.

ZStack Cloud 4.8.38 improves operating system component adaptation and security compliance support, enhancing compliance for related operating systems in security remediation scenarios.

Jira: ZSTAC-85074

ZStack Cloud 4.8.38 updates security-related components and improves permission, API, upload, and log handling to enhance overall platform security and compliance.

Jira: ZSTAC-85985, ZSTAC-86021, ZSTAC-81119, etc.

On May 24, 2024, ZStack Cloud officially released its new Long Term Support (LTS) version, ZStack Cloud 4.8.10, bringing a number of important features and improvements based on 4.8.0.

In previous versions, ZStack Cloud has provided an O&M tool called API Inspector to monitor and display the API information associated with your operations on the Cloud. This tool helps you in troubleshoots and third-party tool debugging, significantly enhancing your O&M efficiency.

ZStack Cloud 4.8.10 makes the following enhancements on API Inspector.

Displays UI GQL Requests, SDK, and Request Logs

In ZStack Cloud 4.8.10, API Inspector provides UI GQL requests information and associations between a UI request and backend requests. By clicking Group by UI Request, you can make all backend requests grouped under the UI requests they are associated with, so as to get a clearer and more readable API view.

Meanwhile, in ZStack Cloud 4.8.10, you can view SDK information and request logs in API Inspector. The logs include zstack-ui-server.log and nginx-access.log that are associated with UI requests and management-server.log that is associated with backend requests. The log details can be presented with line breaks for readability, empowering you with more comprehensive insights into API invocation activities.

Allows You to Search Requests by Time Consumption and Request URL

In ZStack Cloud 4.8.10, you can search requests by its time consumption or URL

• Time Consumption: Enter a duration time in the filter box at the top left corner of the API Inspector panel. The system will then select and display requests whose time consumption exceed this value and requests that have not been finished.
• Request URL: Enter a keyword in the filter box at the top left corner of the API Inspector panel. The system will then select and display requests whose URLs contain this keyword.

In ZStack Cloud 4.8.10, when you perform a Change Primary Storage or Change Host and Primary Storage operation on VM instances, you can now specify the Total Migration Rate. The system limits the maximum I/O read rate of the VM instance and its attached volumes in the source primary storage. In this way, you can proactively manage and control the migration process, reducing I/O contention due to large-scale data migration and lowering the impact on business.

ZStack Cloud 4.8.10 optimizes the image transmission mechanism from the ImageStore to Ceph primary storage. After the improvement, operations such as backup recoveries and VM creations based on Ceph primary storage see an approximate doubling in speed.

ZStack Cloud 4.8.10 optimizes the snapshot deletion mechanism for Shared Block Storage. After the improvement, the snapshot deletion speed is improved by approximately three times.

In ZStack Cloud 4.8.10, a new backup chain architecture is adopted by the CDP module. With this new architecture, the CDP performance can see an increase of over a hundredfold.

In ZStack Cloud 4.8.10, you can manually cancel the process of enabling a CDP task, which gives you a more convenient and flexible using experience.

In ZStack Cloud 4.8.10, the system generates an incremental instead of a full CDP backup for a VM instance attached with a CDP task after the VM volume expansion. An incremental CDP backup means creating a recovery point whose size is equal to the volume increment. This helps reduce the backup storage utilization as well as improve the speed of re-enabling the CDP task after the expansion.

On January 10, 2024, ZStack Cloud officially released its new Long Term Support (LTS) version, ZStack Cloud 4.8.0, covering a number of feature improvement described in detail below.

Starting from ZStack Cloud 4.8.0, all image file exported from the Cloud contain format suffixes in file names, which helps you easily identify the image file format .

In previous versions, ZStack Cloud has allowed you to migrate a running VPC vRouter across primary storage of different types, including LocalStorage↔SharedBlock primary storage, LocalStorage↔NFS primary storage, and SharedBlock↔NFS primary storage.

Starting from 4.8.0, you can migrate a running VPC vRouter across primary storage of the same type, currently including SharedBlock↔SharedBlock primary storage, which improves the flexibility of your O&M on VPC vRouters.

Fixes some known issues.

This document provides the features of 4.8.0 and later LTS versions. For information of prior LTS versions, contact the official technical support.