4.7.2. GFS File Attribute

The gfs_tool command can be used to assign (set) a direct I/O attribute flag, directio, to a GFS file. The directio flag can also be cleared.

Setting the directio Flag 

gfs_tool setflag directio File

Clearing the directio Flag 

gfs_tool clearflag directio File
File

Specifies the file where the directio flag is assigned.

In this example, the command sets the directio flag on the file named datafile in directory /gfs1. 

gfs_tool setflag directio /gfs1/datafile