1Lustre Parallel Filesystem Client 2================================= 3 4The Lustre file system is an open-source, parallel file system 5that supports many requirements of leadership class HPC simulation 6environments. 7Born from from a research project at Carnegie Mellon University, 8the Lustre file system is a widely-used option in HPC. 9The Lustre file system provides a POSIX compliant file system interface, 10can scale to thousands of clients, petabytes of storage and 11hundreds of gigabytes per second of I/O bandwidth. 12 13Unlike shared disk storage cluster filesystems (e.g. OCFS2, GFS, GPFS), 14Lustre has independent Metadata and Data servers that clients can access 15in parallel to maximize performance. 16 17In order to use Lustre client you will need to download the "lustre-client" 18package that contains the userspace tools from http://lustre.org/download/ 19 20You will need to install and configure your Lustre servers separately. 21 22Mount Syntax 23============ 24After you installed the lustre-client tools including mount.lustre binary 25you can mount your Lustre filesystem with: 26 27mount -t lustre mgs:/fsname mnt 28 29where mgs is the host name or ip address of your Lustre MGS(management service) 30fsname is the name of the filesystem you would like to mount. 31 32 33Mount Options 34============= 35 36 noflock 37 Disable posix file locking (Applications trying to use 38 the functionality will get ENOSYS) 39 40 localflock 41 Enable local flock support, using only client-local flock 42 (faster, for applications that require flock but do not run 43 on multiple nodes). 44 45 flock 46 Enable cluster-global posix file locking coherent across all 47 client nodes. 48 49 user_xattr, nouser_xattr 50 Support "user." extended attributes (or not) 51 52 user_fid2path, nouser_fid2path 53 Enable FID to path translation by regular users (or not) 54 55 checksum, nochecksum 56 Verify data consistency on the wire and in memory as it passes 57 between the layers (or not). 58 59 lruresize, nolruresize 60 Allow lock LRU to be controlled by memory pressure on the server 61 (or only 100 (default, controlled by lru_size proc parameter) locks 62 per CPU per server on this client). 63 64 lazystatfs, nolazystatfs 65 Do not block in statfs() if some of the servers are down. 66 67 32bitapi 68 Shrink inode numbers to fit into 32 bits. This is necessary 69 if you plan to reexport Lustre filesystem from this client via 70 NFSv4. 71 72 verbose, noverbose 73 Enable mount/umount console messages (or not) 74 75More Information 76================ 77You can get more information at the Lustre website: http://wiki.lustre.org/ 78 79Source for the userspace tools and out-of-tree client and server code 80is available at: http://git.hpdd.intel.com/fs/lustre-release.git 81 82Latest binary packages: 83http://lustre.org/download/ 84