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 99AD71FF164 for ; Wed, 23 Oct 2024 11:28:19 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id D58D61AAE4; Wed, 23 Oct 2024 11:28:58 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=fu-berlin.de; s=fub01; h=Content-Transfer-Encoding:Content-Type:Subject: From:Cc:To:MIME-Version:Date:Message-ID:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=2iGVs5ECuHCzZSOwbJP93RbdYZcQFAMQkJLmoJbDYa0=; t=1729091391; x=1729696191; b=OVcZj0vKwDCSYNe7CAtOSlEeQ0GuR+w1TLFkM+4NgbNAaBxrVs2b8+T0IwpYrGGUEQViPVwpBfc kHExayf67/5bmP48AjeeO0qjg/szsx6XzGggMyxBYF7T/6+mYnJxJbaNCSA5d8McXASl/PElWtrmY 3f64Mcva9UAsYIDcPLtxrJUP8YWofwiQrNgLSFl5blRfFbDMmN3YEvKFcC4u/4J/kIFd99+jrxHnN fca0vB0V5Bks2dD/qC/hK6IpdXa9nw/ZE6dQS/c5P5U04rRCLNmyBIdlAVJfkN6ZNiUvkY0dAzOJe iEUL09Cg8vSGbaqeP6ZWgCrgUO40oZ6xEv9w==; Message-ID: Date: Wed, 16 Oct 2024 17:06:05 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: pbs-devel@lists.proxmox.com From: Cornelius Hoffmann X-Original-Sender: c.hoffmann@fu-berlin.de X-Originating-IP: 160.45.64.184 X-ZEDAT-Hint: PO X-SPAM-LEVEL: Spam detection results: 0 BAYES_00 -1.9 Bayes spam probability is 0 to 1% DKIM_SIGNED 0.1 Message has a DKIM or DK signature, not necessarily valid DKIM_VALID -0.1 Message has at least one valid DKIM or DK signature DKIM_VALID_AU -0.1 Message has a valid DKIM or DK signature from author's domain DMARC_PASS -0.1 DMARC pass policy RCVD_IN_DNSWL_MED -2.3 Sender listed at https://www.dnswl.org/, medium trust RCVD_IN_MSPIKE_H3 0.001 Good reputation (+3) RCVD_IN_MSPIKE_WL 0.001 Mailspike good senders RCVD_IN_VALIDITY_CERTIFIED_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. RCVD_IN_VALIDITY_RPBL_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. RCVD_IN_VALIDITY_SAFE_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. SPF_HELO_PASS -0.001 SPF: HELO matches SPF record SPF_PASS -0.001 SPF: sender matches SPF record URIBL_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [launchpad.net, fu-berlin.de] X-Mailman-Approved-At: Wed, 23 Oct 2024 11:28:57 +0200 Subject: [pbs-devel] pbs - Nasty atime bug in Ubuntu's kernel-builtin zfs X-BeenThere: pbs-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox Backup Server development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Proxmox Backup Server development discussion Cc: pve-user@lists.proxmox.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: pbs-devel-bounces@lists.proxmox.com Sender: "pbs-devel" Hi, I ran in to a very nasty bug with the zfs version included in Ubuntu (NOT the pbs default kernel, I'm running PBS in a container), which is the base for Proxmox as well as far as I understand it and wanted to warn about a problem with access times that is encountered there. Essentially, this is [1] and it causes the access time update of a `touch` command to fail and set it to epoch 0, so Jan 1, 1970. This will cause all chunks that should not be pruned to have an extremely old atime and thus be pruned, causing a corruption of all backups. I'm writing here to make sure there is not maybe a kernel update waiting with these changes. The newest zfs-linux version in noble has the bug fixed as it includes [2], but that change is only visible in the dkms module, which I installed to fix this problem in the meantime. Cc to the pve-user list, if anybody is also running pbs on the normal Ubunutu noble kernel on zfs storage. Best, Cornelius [1] https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/2077487 [2] https://github.com/openzfs/zfs/pull/15773 -- Cornelius Hoffmann (he/him er/ihm) #gernperDu _______________________________________________ pbs-devel mailing list pbs-devel@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pbs-devel