XFS + DMAPI

In order to use XFS + DMAPI with kernel 2.6.x you need at least the following steps:

• Download kernel from SGI cvs tree
• Download/Install dmapi library (included in xfs-cmds CVS tree) (Debian unstable files are: libdm0 + libdm0-dev)
• Compile kernel with XFS and DMAPI support (either static or as modules)
• If you have udev installed it should create the device for you
• Mount xfs filesystem (mount -o dmapi,mtpt:/migfs /dev/hda5 /migfs)

WARNING

DMAPI_MINOR found in miscdevice.h is no longer valid, /dev/dmapi minor number is dynamically allocated. (use devfs or the newer udev daemon)

To test the functionality, just do cat /dev/dmapi and the DMAPI version used is displayed, if you get an error message you did something wrong.