From 61e3d8a8476ec65842f030a770c3a53b22ed4823 Mon Sep 17 00:00:00 2001
From: Arti Zirk <arti.zirk@gmail.com>
Date: Thu, 31 Jul 2025 13:11:22 +0300
Subject: [PATCH] PG Autoscaler breaks when using custom CRUSH rules

---
 proxmox/README.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/proxmox/README.md b/proxmox/README.md
index 1759548..be10c52 100644
--- a/proxmox/README.md
+++ b/proxmox/README.md
@@ -56,6 +56,11 @@
        # ceph osd crush rule create-replicated <rule-name> <root> <failure-domain> <class>
        ceph osd crush rule create-replicated replicated_nvme default host nvme
        ceph osd crush rule create-replicated replicated_hdd default host hdd
+
+   > **NB**: Using default `replicated_rule` for **ANY** CEPH Pool will result in
+   > Placement Group (PG) Autoscaler not working as it cant properly calculate
+   > how much space is available in CEPH due to different device classes we are using
+
 8. Create CEPH Pools for VM disk images
 
     This is done in individual node Ceph -> Pools configuration