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 869331FF39F for ; Fri, 10 May 2024 07:22:18 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 53845169D1; Fri, 10 May 2024 07:22:21 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=oeg.com.au; s=mail; t=1715318504; bh=GNev9OaHsi9Xqaz7bBncDEdiPusx7jwHoRDs6+hCpm4=; h=Date:Subject:To:References:From:In-Reply-To; b=vYIFV99Y25HE+vrsWp8uzfMEv4ESv4Yw3/SIy1xB+02ssQID8mT0/Mm9gBzGI8Rpw nJU+iK5HopoPMNsubcbx2Azb9JST1vxZGfYpXzxd6WpNz1n2bOgo8KDWAFQ53KBnmQ ttm/g1LUfFMLa7s7QpBY/qhZQU8iS1AQ0RayJ5O4= Message-ID: <941a3c0a-b6f1-42aa-9940-d15704794b3a@oeg.com.au> Date: Fri, 10 May 2024 14:51:42 +0930 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-AU To: Alexander Burke , Proxmox VE user list References: <738ba899-5a52-4000-ba61-83dd0e360df4@elettra.eu> <6598939f-2be1-45a9-8cc5-c9c473373c29@oeg.com.au> <2b94dfec-54d4-4a48-a379-01ef15713da5@elettra.eu> <2e504103-279a-4b24-a918-70d68e63220c@oeg.com.au> <11db3d6f-1879-44b3-9f99-01e6fde6ebc8@alexburke.ca> From: Mike O'Connor Autocrypt: addr=mike@oeg.com.au; keydata= xsDiBD4b8L4RBACiRiGuVGTs1gf7StsJVp5NsWzmCko3Sx4dsRziVB9ri4ySeJb3VKeLJrYf cPfPC/ZGdLQnPMjNHdVFxuAXBmcqTvWpXYW/9Je1gqeKbqyYrCvi16/aFTdsC/D3QFKQrJyj Hd/E+uGIYLtbyRAdDotjQZYRWbo7i5ulThdlw7fz5wCgt/szt2+bZdsBeGLpV56WZHr2p5ED /3pL6WXbKfqbZusUU4n07ciAiGTXIYFqoF6OoRnexxBqQuK1Q0FijycYfuJVz9iKvmO0KIu5 ReFZ8GejO3mVCJGQKHgmA7DOnw62vm8P4x8CfautZQ09Fb02oejY3bAFT4CU9EWFfS/NLGsz dePNrykK/Z0R/ShIkSX51Nh3a5OpA/9UQsGRQRwStHPFVzLmCMR/xPU1H07WNDWuqfq8YcTO simy+QFvouO1exiCMlpRHcaW7BxB2vCFPpPFV5QVeeR/fZHFqdkmQXfO9yXJm1qV7Bv6W02D E16jYtHTKIpOdu1A6ycwm8i9gTBpVgaVRFrtN7pv6FK5el1KaayQsSylR80fTWlrZSBPJ0Nv bm5vciA8bWlrZUBvZWcuY29tLmF1PsJhBBMRAgAhAhsDBgsJCAcDAgMVAgMDFgIBAh4BAheA BQJG35YYAhkBAAoJEH4EH+zmGBT1jrMAn0eatcDjJFQ+p+Yi+3hvqKDttTX2AJ9VXEJ8BRSA TZTr1AU5X3Eis8O1ec7BTQRENxYTEAgAw3R+FQaRC0KYJ7Dv+VsO0EKECcXh3BGh5Y0KaGOm yVjLa5lrkovADpg0vjqjqtdtTjhJ9stNhize32zOsvyc48KRSZDknruCk6BdgUA0MnDlQfAL h/L/OxiZlI1w6FXKrN9r0nhAdJtiJCmE0lMTW4adrLrrD8BndcI2L1zpLy5ZErfYaXzKu+MA aAAdrNsvI8DU+npUa89cr0tbKJWDIBHis8XrLIo+ugnlengs00i2aHbwmZC8+x9/Q0uzNbxO MeZERAyV1ZMbDChn8wHQGNaO2Nr4wfKOQOY/U/tg80blfgrsJhznPQeBAMSMcwPc3X3PnpPh vB18UGuTLVJatwADBQgAiFZ4VnQmrwZIHqzX1eX0QUFzN5IjQjWC8X9005D6aleXN1oIJ7lJ e4HnXL0jqlg7ditGNRS9qGNkoyNTzcgtPU7PsH3dPvCBDEmQhAGC2L4QvVQoalqlrcmpuciI MtqMehCYZ3OVO5RyJjaJApBuXdx+//GzAyaVCygrruzrZNhY4f05KAigra+MvRx66lGb89AU M0W2OF0ssaPhQv4JOE+vT4H9fVgZFAcfF1Hrj2VOhor/z981dWcKTFahJ7v2zyzQW8+q6ZP/ 56uk6eq8/CZLEekheC/qGWzTgywuz1XDJibBSJzRGG17dt0vQALGosAh2AW8ZsEvPfsW0U6U PcJJBBgRAgAJBQJENxYTAhsMAAoJEH4EH+zmGBT1l1sAn3qHKP0JNoQj3FmgFCGrCMpER8hY AJ93RlAGjkYKoQQVaxHLgAMsqBSiJg== In-Reply-To: <11db3d6f-1879-44b3-9f99-01e6fde6ebc8@alexburke.ca> 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 DKIM_VALID_EF -0.1 Message has a valid DKIM or DK signature from envelope-from domain DMARC_MISSING 0.1 Missing DMARC policy HTML_MESSAGE 0.001 HTML included in message SPF_HELO_NONE 0.001 SPF: HELO does not publish an 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. [oeg.com.au, proxmox.com] X-Content-Filtered-By: Mailman/MimeDel 2.1.29 Subject: Re: [PVE-User] Unresponsive VM(s) during VZdump X-BeenThere: pve-user@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE user list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Proxmox VE user list Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: pve-user-bounces@lists.proxmox.com Sender: "pve-user" Hi Alex Not in my experience, without this option on spinning rust we get problems for single host systems. I've never seen a snapshot created during backups for KVM on ZFS or Ceph, Qemu/KVM is doing the backup processing. I had a hand built system which used snapshots for Ceph before we moved to PBS backup. PBS backup is great, but it caused major issues with drives going read only until fleecing was an option. Mike On 9/5/2024 8:54 pm, Alexander Burke wrote: > Hello all, > > My understanding is that if the backing store is ZFS, a snapshot of the zvol underlying the guest's disk(s) is instant and atomic, and the snapshot is what gets backed up so fleecing is moot. Am I wrong on this? > > I know nothing about Ceph other than the fact that it supports snapshots; assuming the above understanding is correct, does snapshot-based backup not work much the same way on Ceph? > > Cheers, > Alex > ---------------------------------------- > > 2024-05-09T10:11:20Z Mike O'Connor: > >> I played with all the drive interface settings, the end result was I lost customers because of backups causing windows drive failures. >> Since fleecing was an option, I've not had a lockup. >> >> >> >> On 9/5/2024 7:32 pm, Iztok Gregori wrote: >>> Hi Mike! >>> >>> On 09/05/24 11:30, Mike O'Connor wrote: >>>> You need to enable fleecing in the advanced backup settings. A slow backup storage system will cause this issue, configuring fleecing will fix this by storing changes in a local sparse image. >>> I see that fleecing is available from PVE 8.2, I will enable it next week once all the nodes will be upgraded to the latest version. >>> >>> Thanks for the suggestion. >>> >>> In the meantime I found this thread on the forum: >>> >>> https://forum.proxmox.com/threads/high-io-wait-during-backups-after-upgrading-to-proxmox-7.113790/ >>> >>> which mention the max_workers parameter. I change it to 4 for the next scheduled backup and see if there are some improvements (I migrated the affected VMs to catch the new configuration). >>> >>> I will keep you posted! >>> >>> Iztok >> _______________________________________________ >> pve-user mailing list >> pve-user@lists.proxmox.com >> https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user _______________________________________________ pve-user mailing list pve-user@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user