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 lustre client
tools from
https://downloads.hpdd.intel.com/public/lustre/latest-feature-release/
the package name is lustre-client.
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
OpenSFS website: http://lustre.opensfs.org/about/
Intel HPDD wiki: https://wiki.hpdd.intel.com
Out of tree Lustre client and server code is available at:
http://git.whamcloud.com/fs/lustre-release.git
Latest binary packages:
http://lustre.opensfs.org/download-lustre/
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