PRIMECLUSTER Global File Services Configuration and Administration Guide 4.1 (Linux)

8.2.1 Creating a file system

The following describes the procedure for creating a file system.

(1) Setting a shared disk device

The partition in which a GFS Shared file system is created and operated must be on a shared disk recognized by PRIMECLUSTER. To make a logical volume of GDS a target device, it must be operating.

Check that the sharing disk is set for simultaneous access.

If a partition is set as a shared disk by automatic detection of shared disks before starting operation, it is already set as a shared disk for simultaneous access. Therefore, there is no need to set it again.

The partition used for creating a GFS shared file system must be on a shared disk recognized by PRIMECLUSTER. In addition, the GDS logical volume must be operating.

For operations of the disk class to which the logical volume of GDS belongs, see the applicable items under "Operation using Global Disk Services Management View" in the "PRIMECLUSTER Global Disk Services Configuration and Administration Guide."

For the logical volume operations of GDS, see the applicable items under "Operation using Global Disk Services Management View" in the "PRIMECLUSTER Global Disk Services Configuration and Administration Guide."

(2) Setting share information

Click [Create] on the [Operation] menu, and the Create File System Wizard (1) appears.

In the Create File System Wizard (1), set sharing node information, the mount information.

[Figure Create File System Wizard (1)]

For an explanation of each parameter, see sfcmkfs(8).in this manual.

Selecting node names

In the "Node name" section, select the names of the sharing nodes. Be sure to select at least two nodes. It is not possible to deselect the local node.

Selecting host names

When you want to select a host name other than the displayed host names, click a <Select> button and then select the host name(s) of the LAN for each node on the screen as below. When selection using <Select> is skipped, the LAN of the current displayed host name is used. When multiple host names are selected, all of the names pops-up as a mouse cursor is placed on the host name.

[Figure Host Name Selection Wizard]

Please choose the host name of LAN used from a left-hand side candidate host name, and add to a right-hand side selection host name. When there are two or more selection host names, please decide the priority of the host name chosen down to <up> <down>. The host name arranged upwards is used preferentially.

Selecting the primary MDS and secondary MDS

As the "Primary MDS" and "Secondary MDS ", specify the nodes on which shared file system management server is to be started. A single, unique node must be selected for each MDS.

Selection of "MDS placement target" and "MDS placement nodes"

Specify the range of nodes on which MDS may execute. If all nodes are selected as "MDS placement nodes," MDS may execute on all shared nodes. In such case, priority will given to the nodes specified as "Primary MDS" and "Secondary MDS". If exactly two nodes are selected as "MDS placement nodes", they will be designated as the "Primary MDS" and "Secondary MDS" nodes.

Setting mount point and creating a directory

Specify the full path name of a mount point in the "Mount point" field. If "yes" is selected for "Make directory", a directory is created with the following attributes:

Owner: root

Group: sys

Access right: 775

(3) Selecting a partition

In the Create File System Wizard (2), register the partition used for the file system.

[Figure Create File System Wizard (2)]

Select the partition from [Candidate partitions] list, and press <Add> button. Only one partition can be selected at a time. A partition in use as a file system or a management partition cannot be chosen.

After selecting a partition, press <Next> button to go to the Create File System Wizard (3).

To return to the Create File System Wizard (1), press <Back> button.

To cancel the file system creates operation, press <Cancel> button.

When the state of the logic volume of GDS is not operating, it cannot choose as a composition partition. When you choose as a composition partition, while operating, please carry out the state of logic volume.

(4) Setting partition information

In the Create File System Wizard (3), select the area (META/LOG/DATA) to be assigned to each partition selected in the Create File System Wizard (2).

The partition to which META is assigned becomes a representative partition.

[Figure Create File System Wizard (3)]

After setting the information items, press <Next> button to go to the Create File System Wizard (4).

To restore a setting to its default, press <Reset> button.

To return to the Create File System Wizard (2), press <Back> button.

To cancel the file system creates operation, press <Cancel> button.

If you don't need change extended information, detailed information and mount information, press <Create> button to create the file system.

(5) Setting detailed information

In the Create File System Wizard (5), set detailed information.

[Figure Create File System Wizard (5)]

For an explanation of each parameter, see sfcmkfs(8) in this manual.

The file system application limit is the value obtained by subtracting, from 100, the minimum percentage of free space in the file system specified by the -o free option of sfcmkfs(8).

The V data area application limit is the value obtained by subtracting, from 100, the minimum percentage of free space of the V data area specified by the -o mfree option of sfcmkfs(8).

After setting the information items, press <Next> button to go to the Create File System Wizard (6).

To restore a setting to its default, press <Reset> button.

To return to the Create File System Wizard (4), press <Back> button.

To cancel the file system creates operation, press <Cancel> button.

If you don't need change mount information, press <Create> button to create the file system.

(6) Setting mount information

In the Create File System Wizard (6), set mount information.

[Figure Create File System Wizard (6)]

After setting the information items, press <Create> button to create the file system.

To restore a setting to its default, press <Reset> button.

To return to the Create File System Wizard (5), press <Back> button.

To cancel the file system creates operation, press <Cancel> button.