История изменений

-m	minfree
	     Specify the percentage of space held back from normal users; the
	     minimum free space	threshold.  The	default	value used is 8%.
	     Note that lowering	the threshold can adversely affect perfor-
	     mance:

	     +o	 Settings of 5%	and less force space optimization to always be
		 used which will greatly increase the overhead for file
		 writes.

	     +o	 The file system's ability to avoid fragmentation will be
		 reduced when the total	free space, including the reserve,
		 drops below 15%.  As free space approaches zero, throughput
		 can degrade by	up to a	factor of three	over the performance
		 obtained at a 10% threshold.

	     If	the value is raised above the current usage level, users will
	     be	unable to allocate files until enough files have been deleted
	     to	get under the higher threshold.