Storage question

William A. Mahaffey III wam at
Wed Sep 9 16:10:02 UTC 2015

On 09/09/15 10:51, Paul Kraus wrote:
> Swap on zvol is a bad idea (as you may have already found). The issue, as best I can tell, is that since ZFS grabs all the RAM it can, and SWAP is used in low RAM situations, there are times were SWAP is trying to write to the zvol and ZFS is trying to decrease it’s RAM usage (because of memory pressure) so it’s performance drops. Functionally it becomes a race state that ends badly.

Yeah, I figured that out *right* after I hit the 'return' key ;-) ....


	William A. Mahaffey III


	"The M1 Garand is without doubt the finest implement of war
	 ever devised by man."
                            -- Gen. George S. Patton Jr.

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