Creating a VxFS file system


Creating a VxFS file system
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The mkfs command creates a VxFS file system by writing to a special character device file. The special character device must be a Veritas Volume Manager (VxVM) volume. The mkfs command builds a file system with a root directory and a lost+found directory.

Before running mkfs, you must create the target device.

See to your operating system documentation.

If you are using a logical device (such as a VxVM volume), see the VxVM documentation.

Note:

Creating a VxFS file system on a Logical Volume Manager (LVM) or Multiple Device (MD) driver volume is not supported in this release. You also must convert an underlying LVM to a VxVM volume before converting an ext2 or ext3 file system to a VxFS file system. See the vxvmconvert(1M) manual page.

See the mkfs(1M) and mkfs_vxfs(1M) manual pages.

When you create a file system with the mkfs command, you can select the following characteristics:

To create a file system

Use the mkfs command to create a file system:

mkfs [-t vxfs] [generic_options]
[-o specific_options] -m special [size]

-t vxfs	Specifies the VxFS file system type.
-m	Displays the command line that was used to create the file system. The file system must already exist. This option enables you to determine the parameters used to construct the file system.
generic_options	Options common to most other file system types.
-o specific_options	Options specific to VxFS.
-o N	Displays the geometry of the file system and does not write to the device.
-o largefiles	Allows users to create files larger than two gigabytes. The default option is largefiles.
-o nomaxlink	Support is added for more than 64 K sub-directory. If maxlink is disabled on the file system, the sub-directory limit is 32 K by default.
special	Specifies the special device file location or character device node of a particular storage device. The device must be a Veritas Volume Manager volume.
size	Specifies the number of 512-byte sectors in the file system. If size is not specified, mkfs determines the size of the special device.

The following example creates a VxFS file system of 12288 sectors in size on a VxVM volume.

To create a VxFS file system

Create the file system:

# /opt/VRTS/bin/mkfs /dev/vx/rdsk/diskgroup/volume 12288
version 10 layout
12288 sectors, 6144 blocks of size 1024, log size 256 blocks
rcq size 1024 blocks
largefiles  supported
maxlink     supported

Mount the newly created file system:

# mount -t vxfs /dev/vx/dsk/diskgroup/volume /mnt1