From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) by lore.proxmox.com (Postfix) with ESMTPS id 3C7F21FF13B for ; Wed, 22 Apr 2026 10:19:27 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id DD201EFE5; Wed, 22 Apr 2026 10:19:26 +0200 (CEST) From: Kefu Chai To: Nicolas Frey , pve-devel@lists.proxmox.com Subject: Re: [PATCH pve-docs v2 1/1] ceph: add warning about mixing CRUSH rules with and without device classes when using autoscaler In-Reply-To: <20260422075440.20996-1-n.frey@proxmox.com> MIME-Version: 1.0 Content-Type: text/plain References: <20260422075440.20996-1-n.frey@proxmox.com> Reviewed-by: Kefu Chai lgtm. Date: Wed, 22 Apr 2026 16:19:17 +0800 Message-ID: <874il3if0a.fsf@proxmox.com> X-Bm-Milter-Handled: 55990f41-d878-4baa-be0a-ee34c49e34d2 X-Bm-Transport-Timestamp: 1776845877201 X-SPAM-LEVEL: Spam detection results: 0 AWL 0.333 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DMARC_MISSING 0.1 Missing DMARC policy KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record Message-ID-Hash: EWF5KU4GOZ6ZFXWW2AHLTAYXZJ6YIU57 X-Message-ID-Hash: EWF5KU4GOZ6ZFXWW2AHLTAYXZJ6YIU57 X-MailFrom: k.chai@proxmox.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.10 Precedence: list List-Id: Proxmox VE development discussion List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Nicolas Frey writes: > Suggested-by: Friedrich Weber > Signed-off-by: Nicolas Frey > --- > Changes since v1 (thanks Kefu!): > * Use Ceph's terminology for CRUSH rules with device classes > * adjust phrasing, as the autoscaler still scales on non-overlapping > pools > > pveceph.adoc | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/pveceph.adoc b/pveceph.adoc > index 2aae6d6..b41bac9 100644 > --- a/pveceph.adoc > +++ b/pveceph.adoc > @@ -916,6 +916,10 @@ TIP: If the pool already contains objects, these must be moved accordingly. > Depending on your setup, this may introduce a big performance impact on your > cluster. As an alternative, you can create a new pool and move disks separately. > > +WARNING: When using the PG autoscaler, all pools in the cluster are required to > +use CRUSH rules of the same kind, either all specifying a device class, > +or none. Otherwise the autoscaler will skip the affected > +pools and their `pg_num` will not be adjusted. > > Ceph Client > ----------- > -- > 2.47.3