File:LUG2019-Sysadmin-tutorial.pdf

This session is designed for users already familiar with Lustre. The focus will be on topics relevant to system administrators who manage Lustre on a day-to-day basis. This tutorial is not intended for new users – they should consider attending the morning session. This session will cover: Configuration and Tuning (30 min) General Benchmarking: IOR, mdtest, and other tools Lustre Client/Server/Router Tuning Monitoring and Metric Collection (60 min) Performance Monitoring: jobstats; LMT/ltop; /proc files Health Monitoring: IB fabric; server hardware; LNet Break (15 min) When Things Go Wrong (60 min) Lustre Recovery Debugging: kdump; lctl dk                               File System Issues: ldiskfs fsck; zfs scrub; online lfsck Other Useful Admin Info (30 min) Lustre striping Round-robin vs QOS Allocator Advance File Layouts: PFL; DoM Panel Session (45 min)