What improvements will GFS2 have over GFS(1)?
• Faster fstat calls, making operations like ‘ls -l’ and ‘df’ faster. • Faster directory scans. • More throughput and better latency. • Ability to add journals without extending the file system. • Supports “data=ordered” mode (similar to ext3). • Truncates appear to be atomic even in the presence of machine failure. • Unlinked inodes / quota changes / statfs changes recovered without remounting that journal. • Quotas are turned on and off by a mount option “quota=[on|off|account]” • No distinction between data and metadata blocks. That means “gfs2_tool reclaim” is no longer necessary/present. • More efficient allocation of inodes and bitmaps. • Smaller journals allow for less overhead and more available storage to the users. • Improved gfs2_edit tool for examining, extracting and recovering file system data.
