From owner-freebsd-stable@freebsd.org  Tue Jan  9 10:31:44 2018
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Subject: Re: swap_pager_getswapspace(32) Error
To: wishmaster <artemrts@ukr.net>
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From: Eugene Grosbein <eugen@grosbein.net>
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Date: Tue, 9 Jan 2018 17:31:31 +0700
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09.01.2018 16:30, wishmaster wrote:

>>> Jan 5 09:49:40 server kernel: swap_pager_getswapspace(32): failed
>>> Jan 5 09:49:40 server kernel: swap_pager_getswapspace(24): failed
>>> Jan 5 09:49:40 server kernel: swap_pager_getswapspace(18): failed

[skip]

> # swapinfo
> Device          1K-blocks     Used    Avail Capacity
> /dev/mirror/swap  33554428        0 33554428     0%
> 
> The Capacity parameter of swapinfo is <= 2...3% even though swap_pager_getswapspace(32) is occurred.

Do you have any real problem with some running service like crashing/restarting processes?