6.0 HP X9000 File Serving Software File System User Guide (TA768-96043, October 2011)

NOTE: A file system must be mounted on the file serving node that owns the root segment (that
is, segment 1) before it can be mounted on any other host. X9000 Software automatically mounts
a file system on the root segment when you mount it on all file serving nodes in the cluster. The
mountpoints must already exist.
Mount a file system on file serving nodes and X9000 clients:
ibrix_mount -f FSNAME [-o {RW|RO}] [-O MOUNTOPTIONS] -h HOSTLIST -m MOUNTPOINT
Mount a file system on a hostgroup:
ibrix_mount -f FSNAME [-o {RW|RO}] -g GROUP -m MOUNTPOINT
Unmounting a file system
Use the following commands to unmount a file system.
NOTE: Be sure to unmount the root segment last. Attempting to unmount it while other segments
are still mounted will result in failure. If the file system was exported using NFS, you must unexport
it before you can unmount it (see “Exporting a file system” (page 44)).
To unmount a file system from one or more file serving nodes, X9000 clients, or hostgroups:
ibrix_umount -f FSNAME [-h HOSTLIST | -g GROUPLIST]
To unmount a file system from a specific mountpoint on a file serving node, X9000 client, or
hostgroup:
ibrix_umount -m MOUNTPOINT [-h HOSTLIST | -g GROUPLIST]
Mounting and unmounting file systems locally on X9000 clients
On both Linux and Windows X9000 clients, you can locally override a mount done on the
management console. For example, if the configuration database on the management console has
a file system marked as mounted for a particular client, that client can locally unmount the file
system, thus overriding the management console.
To mount a file system locally, use the following command on the Linux X9000 client. A management
console name (fmname) is required only if this X9000 client is registered with multiple management
consoles.
ibrix_lwmount -f [fmname:]fsname -m mountpoint [-o options]
To unmount a file system locally, use one of the following commands on the Linux X9000 client.
The first command detaches the specified file system from the client. The second command detaches
the file system that is mounted on the specified mountpoint.
ibrix_lwumount -f [fmname:]FSNAME
ibrix_lwumount -m MOUNTPOINT
Limiting file system access for X9000 clients
By default, all X9000 clients can mount a file system after a mountpoint has been created. To limit
access to specific X9000 clients, create an access entry. When an access entry is in place for a
file system (or a subdirectory of the file system), it enters secure mode, and mount access is restricted
to clients specified in the access entry. All other clients are denied mount access.
Select the file system on the Filesystems top panel, and then select Client Exports in the lower
navigator. On the Create Client Export(s) dialog box, select the clients or hostgroups that will be
allowed access to the file system or a subdirectory of the file system.
20 Creating and mounting file systems