Re: kernel: warning: total configured swap (493567 pages) exceeds maximum recommended amount

Hi,

You can take a look at the script /etc/rc.d/growfs .
It runs on firstboot. The script contains a comment explaining what it does.

Regards,
Ronald.

 
Van: void <void@f-m.fm>
Datum: dinsdag, 11 november 2025 13:45
Aan: freebsd-current@freebsd.org, freebsd-arm@freebsd.org
Onderwerp: Re: kernel: warning: total configured swap (493567 pages) exceeds maximum recommended amount
> 
> On Mon, Nov 10, 2025 at 05:40:49PM -0800, bob prohaska wrote:
> >On Mon, Nov 10, 2025 at 11:29:10PM +0000, void wrote:
> 
> >> fstab entry for swap is:
> >> /dev/label/growfs_swap  none            swap    sw              0       0
> 
> >I've not seen any recognizable benefit in heeding  that warning, but YMMV
> >I've two Pi2's with 3.6G of swap and one with 1.7G of swap. All misbehave
> >in the same way.
> >
> >If using USB you could try something like (as root)
> >swapoff /dev/da0s2
> >gpart resize -i 2 -s 1700M /dev/da0s2
> >swapon /dev/da0s2
> 
> I'm thinking maybe raising this as a PR because that swap thing - it came
> as-is, pre-installed. I downloaded the Nov 3rd armv7 snapshot,
> wrote it to mmcsd and it was there. I have no idea how to resize or otherwise
> modify /dev/label/growfs_swap or if it's a device or a file.
> Raising it as a PR because if incorrectly sized by default then that's
> a fault.
> 
> I had planned to remove the above swap entry anyway and instead have
> swap nfs-mounted. it'd be faster than anything local on the rpi2b.
> 
> >If using microSD I'd be wary of swap; some very mysterious file corruption
> >emerged on a Pi3 which had swap on the microSD. Not your situation, of course,
> >just a cautionary tale.
> 
> It's on the microsd by default for 16:main for armv7 too as per above
> 
> >FWIW there is a random collection of "notes to self" at
> >http://www.zefox.net/~fbsd/
> >It's poorly organized, out of date and at least partly wrong.
> 
> Thanks, I'll have a read.
> 
> -- 
>  
> 
> 
>