Re: Swap partition priority

From: Miroslav Lachman <000.fbsd_at_quip.cz>
Date: Tue, 18 Aug 2026 08:48:46 UTC 
On 18/08/2026 09:49, Stéphane Rochoy wrote:
> Andrea Venturoli <ml@netfence.it> writes:
> 
>> Is it possible to set swap partition priority?
>> According to swapon(8), the answer is no, but I wonder if the man page
>> might be outdated, if patches are available, etc...
>>
>> The reason is I have SSDs and HDDs in the same system: I normally use
>> swap on SSDs (for speed obviously), but sometimes the amount is not enough.
>> So I'm ponderind adding swap on HDDS too, but this would slow down
>> everyrting unless it's really used as last resort.
> 
> Hello,
> 
> Long ago I came accross a setup were the swap device was a GEOM mirror
> (see gmirror(8)). AFAIK it was working except for vmcores: the kernel
> was always using the first device which required to help savecore(8) a
> bit.
> 
> So maybe there's some GEOM class matching your needs.
There is geom_concat - see man gconcat. It may be possible to use it for 
swap (never tried it).

Best regards
Miroslav Lachman