Unable to disable swap on virtualized Hass OS

Installation
1

I moved my HassOS installation from an Raspberry Pi to a a virtualized environment. For setup I used the following script https://github.com/tteck/Proxmox/raw/main/vm/haos-vm.sh which pulls the official KVM (qcow2) disk image.

On the RPi I always had problems with RAM, so I dedicated quite a lot diskspace for swapping. As I am now filled with RAM I wanted to disable the swap.

But I have no idea how I could do that… swapoff -a didn’t disabled it, and I see in /procs/swap that a swapfile should live under /mnt/data/swap. I also saw a hassos swap job on boot, but I might to be too stupid to link this information together.

Really appreciate your knowledge.

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2

Just let the operating system operate as it is designed.

You are a long way off using swap (and at 16G allocated ram, it’ll probably never get used_

3

This is important because swap murders SSDs.

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4

it’ll probably never get used_

5

That’s not how swap works. The OS will use it preemptively even if it isn’t needed. I have a box running proxmox with an SSD in it that was at 15% wearout and had been for months. I ran an HAOS virtual machine on it for 2 weeks with 8GB ram allocated, and after 2 weeks the SSD was at 21% wearout. That’s killing an SSD a year.

The “we know better than you” attitude of this community and HAOS itself is insulting and counterproductive. Feedback like this is important to listen to.

6

The reported RAM usage was never over 50%, before you go telling me I don’t know what I’m talking about re swap.

7

swapoff -a
cd /mnt/data
rm swapfile
ln -s /dev/null swapfile

This will turn off swap and prevent it from being reinitialized on boot.

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8

This is what I get.


[core-ssh ~]$ swapoff -a
swapoff: /mnt/data/swapfile: Operation not permitted
[core-ssh ~]$

I have 16GB of memory and the RAM is at 40% while I have 80% Swap.

HA TEAM, this is ridiculous. It is murdering our SSDs

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I definitely have enough ram to cover the swap usage and then some more.

2 Likes