gfs2

reading link: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Global_File_System_2/ch-overview-GFS2.html#s1-ov-newfeatures-GFS2 特点 Red Hat does not support using GFS2 for cluster file system deployments greater than 16 nodes. However, the current supported maximum size of a GFS2 file system for 64-bit hardware is 100TB. The current supported maximum size of a GFS2 file system for 32-bit hardware is 16TB Asymmetric cluster configurations in which some nodes have access to the shared storage and others do not are not supported. The rule of thumb with GFS2 is that

Intro GFS2 and OCFS2 are 2 cluster filesystems in linux kernel. We also support GFS2, though most of our customers use OCFS2 as we recommend. Last hackweek, from a user perspective, I learned about the difference of usage, features and performance between them. This time, I'd like to look into the design of GFS2 from a developer side. Goals I want to achieve: 1. Look back a bit history of ocfs2 and gfs2 when they were merged into kernel; 2. Learn about the disk layout of gfs2; 3. Get the idea of how gfs2 manages its meta-data and data; 4. To known the way how gfs2 employs DLM; 5. Get the