| Lustre Parallel Filesystem Client |
| ================================= |
| |
| The Lustre file system is an open-source, parallel file system |
| that supports many requirements of leadership class HPC simulation |
| environments. |
| Born from from a research project at Carnegie Mellon University, |
| the Lustre file system is a widely-used option in HPC. |
| The Lustre file system provides a POSIX compliant file system interface, |
| can scale to thousands of clients, petabytes of storage and |
| hundreds of gigabytes per second of I/O bandwidth. |
| |
| Unlike shared disk storage cluster filesystems (e.g. OCFS2, GFS, GPFS), |
| Lustre has independent Metadata and Data servers that clients can access |
| in parallel to maximize performance. |
| |
| In order to use Lustre client you will need to download the "lustre-client" |
| package that contains the userspace tools from http://lustre.org/download/ |
| |
| You will need to install and configure your Lustre servers separately. |
| |
| Mount Syntax |
| ============ |
| After you installed the lustre-client tools including mount.lustre binary |
| you can mount your Lustre filesystem with: |
| |
| mount -t lustre mgs:/fsname mnt |
| |
| where mgs is the host name or ip address of your Lustre MGS(management service) |
| fsname is the name of the filesystem you would like to mount. |
| |
| |
| Mount Options |
| ============= |
| |
| noflock |
| Disable posix file locking (Applications trying to use |
| the functionality will get ENOSYS) |
| |
| localflock |
| Enable local flock support, using only client-local flock |
| (faster, for applications that require flock but do not run |
| on multiple nodes). |
| |
| flock |
| Enable cluster-global posix file locking coherent across all |
| client nodes. |
| |
| user_xattr, nouser_xattr |
| Support "user." extended attributes (or not) |
| |
| user_fid2path, nouser_fid2path |
| Enable FID to path translation by regular users (or not) |
| |
| checksum, nochecksum |
| Verify data consistency on the wire and in memory as it passes |
| between the layers (or not). |
| |
| lruresize, nolruresize |
| Allow lock LRU to be controlled by memory pressure on the server |
| (or only 100 (default, controlled by lru_size proc parameter) locks |
| per CPU per server on this client). |
| |
| lazystatfs, nolazystatfs |
| Do not block in statfs() if some of the servers are down. |
| |
| 32bitapi |
| Shrink inode numbers to fit into 32 bits. This is necessary |
| if you plan to reexport Lustre filesystem from this client via |
| NFSv4. |
| |
| verbose, noverbose |
| Enable mount/umount console messages (or not) |
| |
| More Information |
| ================ |
| You can get more information at the Lustre website: http://wiki.lustre.org/ |
| |
| Source for the userspace tools and out-of-tree client and server code |
| is available at: http://git.hpdd.intel.com/fs/lustre-release.git |
| |
| Latest binary packages: |
| http://lustre.org/download/ |
