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Large file system and large file support
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Large file system and large file support

In conjunction with VxVM, VxFS can support file systems up to 8 exabytes in size. For large database configurations, this eliminates the need to use multiple file systems because of the size limitations of the underlying physical devices.

Changes implemented with the VxFS Version 6 disk layout have greatly expanded file system scalability, including support for large files. You can create or mount file systems with or without large files by specifying either the largefiles or nolargefiles option in mkfs or mount commands. If you specify the nolargefiles option, a file system cannot contain files 2 GB or larger.

Before creating a VxFS file system, review the following:

Usage notes

See the mount_vxfs (1M) and mkfs_vxfs (1M) manual pages for detailed information on mounting and creating file systems.
See the fsadm_vxfs (1M) manual pages for detailed information about large files.

To enable large files on a file system that was created without the largefiles option

Use the fsadm command as follows:

# /opt/VRTS/bin/fsadm -t vxfs -o largefiles \
/mount_point

Note:

Make sure the applications and tools you use can handle large files before enabling the large file capability. Applications and system administration utilities can experience problems if they are not large file aware.