From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id 423F561D60 for ; Fri, 10 Jul 2020 17:32:09 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 3AEF923C64 for ; Fri, 10 Jul 2020 17:31:39 +0200 (CEST) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [212.186.127.180]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS id 092BA23C55 for ; Fri, 10 Jul 2020 17:31:38 +0200 (CEST) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id D10C64311A for ; Fri, 10 Jul 2020 17:31:37 +0200 (CEST) Date: Fri, 10 Jul 2020 17:31:26 +0200 (CEST) From: Dietmar Maurer To: Proxmox VE user list Message-ID: <39487713.486.1594395087264@webmail.proxmox.com> In-Reply-To: <594092ce-e65d-f9b4-a66c-84ac001f9df9@elettra.eu> References: <2ca19e1b-4c4c-daf7-3a48-aef4a6150ea9@elettra.eu> <521875662.472.1594388487491@webmail.proxmox.com> <594092ce-e65d-f9b4-a66c-84ac001f9df9@elettra.eu> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Priority: 3 Importance: Normal X-Mailer: Open-Xchange Mailer v7.10.3-Rev15 X-Originating-Client: open-xchange-appsuite X-SPAM-LEVEL: Spam detection results: 0 AWL 0.009 Adjusted score from AWL reputation of From: address KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment 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 Subject: Re: [PVE-User] Proxmox Backup Server (beta) 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: , X-List-Received-Date: Fri, 10 Jul 2020 15:32:09 -0000 > On 10/07/20 15:41, Dietmar Maurer wrote: > >> Are you planning to support also CEPH (or other distributed file > >> systems) as destination storage backend? > > > > It is already possible to put the datastore a a mounted cephfs, or > > anything you can mount on the host. > > Is this "mount" managed by PBS or you have to "manually" mount it > outside PBS? Not sure what kind of management you need for that? Usually people mount filesystems using /etc/fstab or by creating systemd mount units. > > But this means that you copy data over the network multiple times, > > so this is not the best option performance wise... > > True, PBS will act as a gateway to the backing storage cluster, but the > data will be only re-routed to the final destination (in this case and > OSD) not copied over (putting aside the CEPH replication policy). That is probably a very simplistic view of things. It involves copying data multiple times, so I will affect performance by sure. Note: We take about huge amounts of data. > So > performance wise you are limited by the bandwidth of the PBS network > interfaces (as you will be for a local network storage server) and to > the speed of the backing CEPH cluster. Maybe you will loose something on > raw performance (but depending on the CEPH cluster you could gain also > something) but you will gain the ability of "easily" expandable storage > space and no single point of failure. Sure, that's true. Would be interesting to get some performance stats for such setup...