It should already be enabled.
man largefile
The application has to be largefile aware. In older Solaris version you used to need a "largefiles" in the vfstab, however that's not the case anymore as it's the default. Type "mount" and you should see it as an option.
---Eric
From: Camelia Anghel [mailto:user-56034f999072@xymon.invalid]
Sent: Thursday, December 10, 2009 10:06
To: user-ae9b8668bcde@xymon.invalid
Subject: [hobbit] How to set LFS on Solaris10 server
Hello,
I've installed xymon-4.2.2 on a Sparc Solaris10 64 bit server.
I would like to enable large file system.
I wonder if I can get a link/hint that will point in the right direction.
Thanks,
Camelia