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 81DA2B98E2 for ; Fri, 15 Mar 2024 11:25:16 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id A1AF319794 for ; Fri, 15 Mar 2024 11:25:13 +0100 (CET) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [94.136.29.106]) (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 firstgate.proxmox.com (Proxmox) with ESMTPS for ; Fri, 15 Mar 2024 11:25:09 +0100 (CET) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id 0C76A48A3E for ; Fri, 15 Mar 2024 11:25:09 +0100 (CET) From: Fiona Ebner To: pve-devel@lists.proxmox.com Date: Fri, 15 Mar 2024 11:24:50 +0100 Message-Id: <20240315102502.84163-10-f.ebner@proxmox.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240315102502.84163-1-f.ebner@proxmox.com> References: <20240315102502.84163-1-f.ebner@proxmox.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL -0.069 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 T_SCC_BODY_TEXT_LINE -0.01 - Subject: [pve-devel] [PATCH guest-common v2 09/21] vzdump: schema: add fleecing property string X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Mar 2024 10:25:16 -0000 It's a property string, because that avoids having an implicit "enabled" as part of a 'fleecing-storage' property. And there likely will be more options in the future, e.g. threshold/limit for the fleecing image size. Storage is non-optional, so the storage choice needs to be a conscious decision. Can allow for a default later, when a good choice can be made further down the stack. The original idea with "same storage as VM disk" is not great, because e.g. for LVM, it would require the same size as the disk up front. Signed-off-by: Fiona Ebner --- Changes in v2: * Make storage non-optional. src/PVE/VZDump/Common.pm | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/src/PVE/VZDump/Common.pm b/src/PVE/VZDump/Common.pm index 5be87a0..30bd044 100644 --- a/src/PVE/VZDump/Common.pm +++ b/src/PVE/VZDump/Common.pm @@ -33,6 +33,7 @@ my $dowhash_to_dow = sub { }; our $PROPERTY_STRINGS = { + 'fleecing' => 'backup-fleecing', 'performance' => 'backup-performance', 'prune-backups' => 'prune-backups', }; @@ -79,6 +80,24 @@ sub parse_dow { return $res; }; +PVE::JSONSchema::register_format('backup-fleecing', { + enabled => { + description => "Enable backup fleecing. Cache backup data from blocks where new guest " + ."writes happen on specified storage instead of copying them directly to the backup " + ."target. This can help guest IO performance and even prevent hangs, at the cost of " + ."requiring more storage space.", + type => 'boolean', + default => 0, + optional => 1, + default_key => 1, + }, + storage => get_standard_option('pve-storage-id', { + description => "Use this storage to storage fleecing images. For efficient space usage, " + ."it's best to use a local storage that supports discard and either thin provisioning " + ."or sparse files.", + }), +}); + PVE::JSONSchema::register_format('backup-performance', { 'max-workers' => { description => "Applies to VMs. Allow up to this many IO workers at the same time.", @@ -262,6 +281,12 @@ my $confdesc = { format => 'backup-performance', optional => 1, }, + fleecing => { + type => 'string', + description => "Options for backup fleecing (VM only).", + format => 'backup-fleecing', + optional => 1, + }, lockwait => { type => 'integer', description => "Maximal time to wait for the global lock (minutes).", -- 2.39.2