How to Enable Forced Direct I/O on a UFS File System

1. Become superuser.

2. Mount a file system with the forcedirectio mount option.

   # mount -F ufs -o forcedirectio /dev/dsk/c0t3d0s7 /datab

3. Verify the mounted file system has forced direct I/O enabled.

   # mount . . . /export/home on /dev/dsk/c0t3d0s7 read/write/setuid/forcedirectio ...