I have a customer who is currently looking at standing up 4 8 node RHCS clusters each of which will have a 8TB GFS2 file system. RHEL 5.3 32bit; vmware host virtualization; fence_vmware_vi.py fencing scripts. The cluster and fencing are all working.
I am looking to get some GFS2 tuning recommendations for these file systems. They will contain directory structures and files similar to the following configurations; the following are rough estimates from the application vendor. Currently we are looking at GFS2 partitions set up with the default settings; default i386 block size, 8 journals. Chiliad Raw Data (html/xml) files: Estimate # of Directories up to 100k Typical FS Layout: /datastore/chiliad/extract/<form>/<year>/<month>/<day of month>/<bin>/*.html Number of files in a directory: min=1,000, max=10,000, avg=1,000 File size: min=1KB, max=2MB, avg=5KB Directory depth: min=1, max=25, avg=5 Chiliad Index files: Estimate # of Directories: Thousands Number of files in a directory: min=5, max=30, avg=15-20 File size: min=1KB, max=2GB, avg=1-2GB Directory depth: min=1, max=10, avg=5 XXXXX:(/root)# gfs2_tool gettune /datastore/ new_files_directio = 0 new_files_jdata = 0 quota_scale = 1.0000 (1, 1) quotad_secs = 5 logd_secs = 1 recoverd_secs = 60 statfs_quantum = 30 stall_secs = 600 quota_cache_secs = 300 quota_simul_sync = 64 statfs_slow = 0 reclaim_limit = 5000 complain_secs = 10 max_readahead = 262144 atime_quantum = 3600 quota_quantum = 60 quota_warn_period = 10 jindex_refresh_secs = 60 log_flush_secs = 60 incore_log_blocks = 1024 demote_secs = 300 Thank you, Michael Hayes Red Hat [email protected] -- Linux-cluster mailing list [email protected] https://www.redhat.com/mailman/listinfo/linux-cluster
