About Release 8.0.0
This site contains documentation for HPE Data Fabric release 8.0.0, including installation, configuration, administration, and reference content, as well as content for the associated ecosystem components and drivers.
8.0.0 Installation
This section contains information about installing HPE Data Fabric software. It also contains information about how to migrate data and applications from an Apache Hadoop cluster to a HPE Ezmeral Data Fabric cluster.
8.0.0 Upgrade
This section describes how to upgrade HPE Data Fabric software.
- Upgrading a Seed Node Fabric
  Describes how to use the Data Fabric UI to upgrade a fabric that was installed using the seed node installation procedure.
- Upgrading a Manually Installed Fabric
  Depending on your current configuration, you may choose to upgrade the release version (core), ecosystem components, clients, or monitoring components.
  - Upgrade Workflows (Releases 6.x or 7.x to 7.10.0)
    This section describes three common methods for upgrading from one core release to another. The workflows in this section introduce you to the high-level steps for each method and provide links to pages showing more detail.
  - Upgrading Data Fabric Software
    This section describes the process of upgrading core, the ecosystem components, and the Data Fabric clients.
    - Upgrading and Your License
      You do not need a new license to upgrade an HPE Data Fabric cluster. However, it's a good idea to check your cluster license periodically and renew the license before it expires.
    - Core Upgrade Process
      When you upgrade core, you will also upgrade a number of cluster components.
    - Planning Your Core Upgrade
      Describes how to develop a successful plan for your upgrade process.
    - Securing the Cluster Before Upgrading
      Describes how to secure cluster during an upgrade to a newer Data Fabric version.
    - When Upgrading Core with the Installer Requires an OS Upgrade
      Helps you decide if an OS upgrade is needed when you are using the Installer to upgrade to core 7.0.0 or later.
    - Upgrading Your Linux Operating System
      Upgrading to a new release of the HPE Data Fabric sometimes requires you to upgrade your Linux operating system. This page has pointers to more information about OS upgrades.
    - Preparing to Upgrade Core
      Complete these pre-upgrade steps for core.
    - Upgrading Core With the Installer
      If the cluster that you want to upgrade was installed using the Installer, use the Installer to upgrade core.
    - Upgrading Core Without the Installer
      You can upgrade core without using the Installer.
    - Finishing the Core Upgrade
      This section provides post-upgrade steps for core.
      - Post-Upgrade Steps for Core
        After upgrading core, several manual steps are required.
        Considerations for Upgrades Using the Installer
        If you use the Installer to upgrade the cluster, some post-upgrade steps for core do not need to be performed. This page describes the post-upgrade steps that are performed by the Installer and the steps that you must perform manually.
        Step 1: Restart and Check Cluster Services
        After upgrading core using either a manual offline or rolling upgrade method (not upgrading with the Installer) and upgrading your ecosystem components, configure and restart the cluster and services.
        Step 2: Manually Update Configuration Files
        After upgrading core using a manual offline or rolling upgrade method, update your configuration files.
        Step 3: Upgrade Clients
        After you upgrade your cluster, you may also need to upgrade your Data Fabricclient or POSIX client.
        Upgrading the Data Fabric Client
        Depending on which Data Fabric client you want to update, you will either need to install and reconfigure or perform a package upgrade.
        Upgrading the Data Fabric POSIX loopbacknfs Client
        Perform a package upgrade to get a newer version of the Data Fabric POSIX loopbacknfs client.
        Upgrading the loopbacknfs POSIX Client on a Linux Server
        This section describes how to upgrade the loopbacknfs POSIX Client on a Linux server.
        Troubleshooting loopbacknfs POSIX Client Upgrades
        If you are having difficulty upgrading the POSIX client, it might be due to a shared-memory-segment lock.
        Upgrading the FUSE POSIX Client on a Linux Server
        This section describes how to upgrade the FUSE POSIX client on a Linux server.
        Step 4: Enable New Features
        Describes the new features to enable after upgrading core without the Installer using a manual offline or rolling upgrade method.
      - Installing Additional Core Features
        Some features can require additional configuration or the installation of additional packages after an upgrade to a new release.
  - Upgrading Ecosystem Packs
    Describes how to upgrade Ecosystem Packs (EEPs), either as part of a core upgrade or to take advantage of a new EEP for the current version of core.
  - Preparing the Cluster for a Maintenance Update
    This section identifies how to prepare for applying either a minor update or a patch.
  - Performing a Maintenance Update
    Perform a maintenance update when you want to upgrade to a new patch version of core or apply a patch.
8.0.0 Data Fabric
HPE Data Fabric is the industry-leading data platform for AI and analytics that solves enterprise business needs.
8.0.0 Administration
This section describes how to manage the nodes and services that make up a cluster.
8.0.0 Development
This section contains information related to application development for Ezmeral ecosystem components and HPE Data Fabric products, including the file system, Database (Key-Value and JSON), and Event Streams.
Other Docs
This section contains release-independent information, including: Installer documentation, Ecosystem release notes, interoperability matrices, security vulnerabilities, and links to other Data Fabric version documentation.
Glossary
Definitions for commonly used terms in MapR Converged Data Platform environments.

Troubleshooting loopbacknfs POSIX Client Upgrades

If you are having difficulty upgrading the POSIX client, it might be due to a shared-memory-segment lock.

About this task

If the mapr-loopbacknfs service fails to start after an upgrade, use the following steps to determine if a shared-memory-segment lock was the cause of the failure:

Procedure

Open the loopbacknfs.log file. The loopbacknfs.log file is in the following directory: /usr/local/mapr-loopbacknfs/logs/
Check for the following string: Create/Attach to shm failed
If the string is present, perform the following steps:
1. Run the following command to identify the shmid of the lock: ipcs -m | grep 0x0000161c
2. Run the following command to remove the lock:ipcrm -m <shm id>
3. Start the mapr-loopbacknfs service.

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HPE Data Fabric 8.0.0 Software Documentation
Abstract	This site contains documentation for HPE Data Fabric Software version 8.0.0 including installation, configuration, administration, and reference content, as well as content for the associated bundled ecosystem components and drivers.
Published	November 2025
Edition	8.0.0
Topic last updated	2020-11-29