mount.lustre(8) start a Lustre client or target service


mount -t lustre [-o options] directory


mount.lustre is used to start a Lustre client or target service. This program should not be called directly; rather it is a helper program invoked through mount(8) as above. Lustre clients and targets are stopped by using the umount(8) command.

There are two forms for the device option, depending on whether a client or a target service is started:

mounts the Lustre filesystem named fsname on the client by contacting the Management Service at mgsspec on the pathname given by directory. The format for mgsspec is defined below. A mounted client filesystem appears in fstab(5) and is usable like any local filesystem and provides a full POSIX-compilant interface.
starts the target service defined by the mkfs.lustre command on the physical disk disk_device. A mounted target service filesystem is only useful for df(1) operations and appears in fstab(5) to show the device is in use.


The mgs specification may be a colon-separated list of nodes:
each node may be specified by a comma-separated list of NIDs.

In addition to the standard options listed in mount(8), Lustre understands the following client-specific options:

Enable full flock support, coherent across all client nodes.
Enable local flock support, using only client-local flock (faster, for applications that require flock but do not run on multiple nodes).
Disable flock support entirely. Applications calling flock will get an error.
Enable get/set of extended attributes by regular users. See the attr(5) manual page.
Disable use of extended attributes by regular users. Root and system processes can still use extended attributes.
Enable POSIX Access Control List support. See the acl(5) manual page.
Disable Access Control List support.

In addition to the standard mount options and backing disk type (e.g. ext3) options listed in mount(8), Lustre understands the following server-specific options:

Only start the MGC (and MGS, if co-located) for a target service, and not the actual service.
Start a MDT with a co-located MGS without starting the MGS.
Start a client or MDT with a (colon-separated) list of known inactive OSTs.
Abort client recovery and start the target service immediately.
Sets the stripe cache size for server side disk with a striped raid configuration.
Allow 'timeout' seconds for clients to reconnect for recovery after a server crash. This timeout will be incrementally extended if it is about to expire and the server is still handling new connections from recoverable clients. The default soft recovery timeout is set to 300 seconds (5 minutes).
The server will be allowed to incrementally extend its timeout up to a hard maximum of 'timeout' seconds. The default hard recovery timeout is set to 900 seconds (15 minutes).


mount -t lustre cfs21@tcp0:/testfs /mnt/myfilesystem
Start a client for the Lustre filesystem 'testfs' at the mount point /mnt/myfilesystem. The Management Service is running on a node reachable from this client via the nid cfs21@tcp0.
mount -t lustre /dev/sda1 /mnt/test/mdt
Start the Lustre metadata target service from /dev/sda1 on mountpoint /mnt/test/mdt.
mount -t lustre -L testfs-MDT0000 -o abort_recov /mnt/test/mdt
Start the testfs-MDT0000 service (by using the disk label), but abort the recovery process.


If the Service Tags tool (from the sun-servicetag package) can be found in /opt/sun/servicetag/bin/stclient an inventory service tag will be created reflecting the Lustre service being provided. If this tool cannot be found mount.lustre will silently ignore it and no service tag is created. The stclient(1) tool only creates the local service tag. No information is sent to the asset management system until you run the Registration Client to collect the tags and then upload them to the inventory system using your inventory system account. See for more details on a web-based, free, IT asset management system.


Not very many mount options can be changed with -o remount. Please report all bugs to Sun Microsystems using


mount.lustre is part of the Lustre(7) filesystem package and is available from Sun Microsystems, Inc.