How to Disable Large Files on an NFS Server

For servers that are supporting clients that cannot handle a file over 2 GBytes, you might need to disable the ability to create large files.

Previous versions of the Solaris operating environment cannot use large files. Check that clients of the NFS server are running at minimum the 2.6 release if the clients need to access large files.

1. Become superuser or assume an equivalent role.

   For information about roles, see "Using Privileged Applications" in System Administration Guide: Security Services.

2. Check that no large files exist on the file system.

   Here is an example of a command that you can run to locate large files:

   # cd /export/home1 # find . -xdev -size +2000000 -exec ls -l {} \;

   If large files are on the file system, you must remove or move them to another file system.

3. Unmount the file system.

   # umount /export/home1

4. Reset the file system state if the file system has been mounted by using largefiles.

   fsck resets the file system state if no large files exist on the file system:

   # fsck /export/home1

5. Mount the file system by using nolargefiles.

   # mount -F ufs -o nolargefiles /export/home1

   You can mount from the command line, but to make the option more permanent, add an entry that resembles the following into /etc/vfstab:

   /dev/dsk/c0t3d0s1 /dev/rdsk/c0t3d0s1 /export/home1 ufs 2 yes nolargefiles