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It's poorly organized, out of date and at least partly wrong.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.

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