File Level Redundancy (FLR) - File Level Redundancy (FLR) is a Lustre feature introduced in version 2.11 that allows data mirroring at the file level across multiple OSTs for improved fault ...
Lustre Features - A comprehensive list of all features in the Lustre file system, including explanations, usage, and availability by version. Based on the latest information as o...
Lustre Striping Guide - Lustre file striping distributes file data across multiple Object Storage Targets (OSTs) using a RAID-0 pattern to improve performance, scalability, and bandwid...
PFL SEL Resync Examples - Resync in Lustre FLR synchronizes stale mirrors after writes or failures. When using PFL (Progressive File Layouts) or SEL (Self-Extending Layouts) within FLR m...
Progressive File Layouts (PFL) - Progressive File Layouts (PFL) is a Lustre feature introduced in version 2.10 that enables dynamic, flexible, and scalable file striping through composite layou...
Self-Extending Layout (SEL) - Self-Extending Layout (SEL) is an extension of Progressive File Layout (PFL) introduced in Lustre 2.13 that allows the Metadata Server (MDS) to dynamically modi...
High Availability and Failover
FLR Failover Integration Examples - File Level Redundancy (FLR) integrates with Lustre failover by providing file-level mirroring, allowing continued access during OST failures or failovers withou...
LNet Multi-Rail Failover Examples - LNet Multi-Rail (MR) enables failover across multiple network interfaces or networks for high availability and bandwidth aggregation in Lustre. This guide provi...
High Availability and Reliability
Lustre Failover Examples - This guide provides detailed examples for setting up Lustre failover for MDT and OST components, including active/active configurations, manual testing, and integration with Pacemaker. It includes explanations for beginners, prerequisites, best practices, warnings, command details, and tips based on Lustre 2.17.0 (as of January 2026).
Lustre High Availability - This guide provides detailed explanations on achieving high availability in Lustre filesystems, including failover, multi-rail networking, file-level redundancy (FLR), and integration with clustering tools. It covers core concepts, setup instructions, best practices, warnings, commands, and recent updates for Lustre 2.17.0 (as of January 2026), with beginner-friendly explanations and additional tips.
Installation and Setup
Downloading Packages and Sources - Lustre packages and sources can be downloaded from several official and mirror sites. Use the latest versions (e.g., 2.17.0 for features, 2.15.8 for maintenance...
Installing Lustre Server - This guide provides detailed instructions for installing Lustre servers on MGS, MDS, and OSS nodes. It covers prerequisites, step-by-step installation for supported distributions, explanations for beginners, best practices, and important warnings. Lustre is a high-performance parallel filesystem designed for large-scale cluster computing, commonly used in HPC environments.
Installing Pre-built Lustre Client - This guide provides detailed instructions for installing pre-built Lustre clients on nodes that access the filesystem. It differs from server installation as no patched kernel is required. Covers Lustre 2.17.0 on RHEL 9.7/10.1, SLES 15 SP7, and Ubuntu 24.04 LTS, with explanations for beginners, prerequisites, best practices, and warnings.
Lustre Build Instructions - Building Lustre from source is recommended for custom kernels or unsupported distributions. This guide is for Lustre 2.17.0 (January 2026). Use prebuilt package...
Lustre Kernel Patching Details - Lustre requires kernel patches primarily for server components to integrate deeply with the Linux filesystem and block layers (e.g., for LDISKFS OSD, quotas, se...
Simple 3-Node Lustre Cluster Tutorial - This tutorial sets up a basic 3-node Lustre cluster for testing: Node 1 (MGS/MDT), Node 2 (OSS with 2 OSTs), Node 3 (client). Assumes RHEL 9.x (adjust for other...
Simple llmount.sh Single Node Lustre Example - llmount.sh is a Bash script in the Lustre test suite (/lib64/lustre/tests/llmount.sh after installation of lustre-tests package) that sets up a temporary single-node Lustre filesystem ...
Supported Linux Distributions - Lustre file system is supported on several enterprise Linux distributions. The information below is based on the latest releases as of January 2026, including L...
LNet and Networking
Dynamic NID Configuration Details - Dynamic NID Configuration in Lustre LNet allows runtime management of Network Identifiers (NIDs) without restarting services, supporting multi-rail, failover, a...
LNet Health Monitoring Details - LNet health monitoring detects and responds to failures in network interfaces (NIs), peers, and routers, enabling automatic failover in multi-rail setups. Intro...
Lustre LNet Networking Details - LNet (Lustre Networking) is the kernel-level networking infrastructure for Lustre, providing abstracted message passing over various networks like TCP/IP, Infin...
Operations and Maintenance
Lustre Performance Benchmarking - Benchmarking Lustre involves testing I/O bandwidth, IOPS, and metadata operations using specialized tools. This expanded guide covers key tools, detailed usage, tuning tips, metrics, explanations for beginners, best practices, warnings, and additional resources for Lustre 2.17.0 and 2.15.x (as of January 2026).
Lustre Startup Tutorial - Starting a Lustre file system ensures clean recovery, proper module loading, and availability for clients. The correct order is: MGS/MDT first (metadata), then ...
Lustre Upstreaming Process Details - The Lustre upstreaming effort aims to integrate Lustre as a native filesystem in the mainline Linux kernel, reducing out-of-tree patches and vendor-specific modifications. This expanded guide includes explanations for beginners, best practices, warnings, and additional resources based on the latest wiki updates (June 2025) and LUG2024 presentations.
Stopping a Lustre File System Tutorial - Stopping a Lustre file system safely prevents data corruption, ensures clean recovery, and allows for proper resource teardown. The correct order is: unmount cl...
Troubleshooting and Debugging
FLR Resync Troubleshooting Examples - FLR resync synchronizes stale mirrors by copying data from up-to-date mirrors, essential post-write or after OST failures/failovers. Common issues include failu...
Lustre Debugging Tutorial - Lustre provides a comprehensive set of debugging tools for troubleshooting file-system issues, including an internal debugger, debug logs, configurable debug levels, buffer management, and a debug daemon. This expanded tutorial covers Lustre 2.17.0 (January 2026), with explanations for beginners, best practices, warnings, and additional tools.
Lustre Troubleshooting Guide - This guide covers common Lustre issues, error codes, debugging tools, and recovery procedures for Lustre 2.17.0 and 2.15.x (as of January 2026). It draws from t...