From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate001.proxmox.com (gate001.proxmox.com [45.144.208.40]) by lore.proxmox.com (Postfix) with ESMTPS id 435731FF0AD for ; Fri, 21 Aug 2026 09:44:48 +0200 (CEST) Received: from gate001.proxmox.com (localhost.localdomain [127.0.0.1]) by gate001.proxmox.com (Proxmox) with ESMTP id 6D633215BF; Fri, 21 Aug 2026 09:44:45 +0200 (CEST) Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Fri, 21 Aug 2026 09:44:41 +0200 Message-Id: Subject: Re: [PATCH v4 qemu-server 2/3] pbs-restore: set 'no-cache' on block devices backed by zfspool From: "Lukas Sichert" To: "Christian Ebner" , References: <20260820131049.374072-1-c.ebner@proxmox.com> <20260820131049.374072-3-c.ebner@proxmox.com> In-Reply-To: <20260820131049.374072-3-c.ebner@proxmox.com> X-Bm-Milter-Handled: 55990f41-d878-4baa-be0a-ee34c49e34d2 X-Bm-Transport-Timestamp: 1787298255065 X-SPAM-LEVEL: Spam detection results: 0 AWL 0.661 Adjusted score from AWL reputation of From: address DMARC_MISSING 0.1 Missing DMARC policy KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment (newer systems) RCVD_IN_DNSWL_MED -2.3 Sender listed at https://www.dnswl.org/, medium trust 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: 2RTAOJ7ZWXIJ7G6SP56QGC4SFMTC2TCB X-Message-ID-Hash: 2RTAOJ7ZWXIJ7G6SP56QGC4SFMTC2TCB X-MailFrom: l.sichert@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: On 2026-08-20 15:10, Christian Ebner wrote: > Skip the host page cache for restores on zvols, as page writeback > after filling the buffers can cause I/O delay on other ZFS-backed VMs > on certain setups, as reported in enterprise support and reproduced > internally. The restored data is not to be read back from cache > during restore anyways. > > Keep for other storage types for now to reduce regression potential. > > Version bump in d/control assures feature compatibility for > pbs-restore. > > Signed-off-by: Christian Ebner When I tried to install qemu-server with pve-qemu-kvm at 11.0.3-2 APT aborted the installation due to unsatisfied dependencies. With pve-qemu-kvm bumped to 11.0.3-3 the installation was possible and the --no-cache flag was set correctly. Also my +local suffixes did not create any issues. Therefore, consider this: Tested-by: Lukas Sichert