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 DF8D36D8CE for ; Tue, 28 Sep 2021 15:08:00 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id D916AF5AA for ; Tue, 28 Sep 2021 15:07:30 +0200 (CEST) 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 id DE3BFF5A0 for ; Tue, 28 Sep 2021 15:07:29 +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 B837E44AB5 for ; Tue, 28 Sep 2021 15:07:29 +0200 (CEST) From: Lorenz Stechauner To: pve-devel@lists.proxmox.com Date: Tue, 28 Sep 2021 15:07:09 +0200 Message-Id: <20210928130711.4033669-2-l.stechauner@proxmox.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210928130711.4033669-1-l.stechauner@proxmox.com> References: <20210928130711.4033669-1-l.stechauner@proxmox.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL 0.153 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% 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 URIBL_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [dirplugin.pm, plugin.pm, nfsplugin.pm, readthedocs.io, cifsplugin.pm, btrfsplugin.pm, glusterfsplugin.pm] URI_NOVOWEL 0.5 URI hostname has long non-vowel sequence Subject: [pve-devel] [PATCH v2 storage 1/1] fix #3580: plugins: make preallocation mode selectable for qcow2 and raw images 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: Tue, 28 Sep 2021 13:08:00 -0000 the plugins for file based storages * BTRFS * CIFS * Dir * Glusterfs * NFS now allow the option 'preallocation'. 'preallocation' can have four values: * default * off * metadata * falloc * full see man pages for `qemu-img` for what these mean exactly. [0] the defualt value was chosen to be * qcow2: metadata (as previously) * raw: off (I was unable to find any documentation on this, so could only test this and found, that 'off' was the most fitting.) when using 'metadata' as preallocation mode, for raw images 'off' is used. [0] https://qemu.readthedocs.io/en/latest/system/images.html#disk-image-file-formats Signed-off-by: Lorenz Stechauner --- PVE/Storage/BTRFSPlugin.pm | 1 + PVE/Storage/CIFSPlugin.pm | 1 + PVE/Storage/DirPlugin.pm | 1 + PVE/Storage/GlusterfsPlugin.pm | 4 ++- PVE/Storage/NFSPlugin.pm | 1 + PVE/Storage/Plugin.pm | 48 +++++++++++++++++++++++++++++++++- 6 files changed, 54 insertions(+), 2 deletions(-) diff --git a/PVE/Storage/BTRFSPlugin.pm b/PVE/Storage/BTRFSPlugin.pm index b30000b..97633a2 100644 --- a/PVE/Storage/BTRFSPlugin.pm +++ b/PVE/Storage/BTRFSPlugin.pm @@ -73,6 +73,7 @@ sub options { is_mountpoint => { optional => 1 }, nocow => { optional => 1 }, mkdir => { optional => 1 }, + preallocation => { optional => 1 }, # TODO: The new variant of mkdir with `populate` vs `create`... }; } diff --git a/PVE/Storage/CIFSPlugin.pm b/PVE/Storage/CIFSPlugin.pm index c5f3894..3a7e638 100644 --- a/PVE/Storage/CIFSPlugin.pm +++ b/PVE/Storage/CIFSPlugin.pm @@ -142,6 +142,7 @@ sub options { smbversion => { optional => 1}, mkdir => { optional => 1 }, bwlimit => { optional => 1 }, + preallocation => { optional => 1 }, }; } diff --git a/PVE/Storage/DirPlugin.pm b/PVE/Storage/DirPlugin.pm index 2267f11..3eeec98 100644 --- a/PVE/Storage/DirPlugin.pm +++ b/PVE/Storage/DirPlugin.pm @@ -59,6 +59,7 @@ sub options { mkdir => { optional => 1 }, is_mountpoint => { optional => 1 }, bwlimit => { optional => 1 }, + preallocation => { optional => 1 }, }; } diff --git a/PVE/Storage/GlusterfsPlugin.pm b/PVE/Storage/GlusterfsPlugin.pm index ea4df82..d8d2b88 100644 --- a/PVE/Storage/GlusterfsPlugin.pm +++ b/PVE/Storage/GlusterfsPlugin.pm @@ -137,6 +137,7 @@ sub options { format => { optional => 1 }, mkdir => { optional => 1 }, bwlimit => { optional => 1 }, + preallocation => { optional => 1 }, }; } @@ -260,7 +261,8 @@ sub alloc_image { my $cmd = ['/usr/bin/qemu-img', 'create']; - push @$cmd, '-o', 'preallocation=metadata' if $fmt eq 'qcow2'; + my $prealloc_opt = PVE::Storage::Plugin::preallocation_cmd_option($scfg, $fmt); + push @$cmd, '-o', $prealloc_opt if defined($prealloc_opt); push @$cmd, '-f', $fmt, $volumepath, "${size}K"; diff --git a/PVE/Storage/NFSPlugin.pm b/PVE/Storage/NFSPlugin.pm index 39bf15a..21b288a 100644 --- a/PVE/Storage/NFSPlugin.pm +++ b/PVE/Storage/NFSPlugin.pm @@ -90,6 +90,7 @@ sub options { format => { optional => 1 }, mkdir => { optional => 1 }, bwlimit => { optional => 1 }, + preallocation => { optional => 1 }, }; } diff --git a/PVE/Storage/Plugin.pm b/PVE/Storage/Plugin.pm index 417d1fd..4308522 100644 --- a/PVE/Storage/Plugin.pm +++ b/PVE/Storage/Plugin.pm @@ -41,6 +41,19 @@ our @SHARED_STORAGE = ( 'pbs', ); +our $QCOW2_PREALLOCATION = { + off => 1, + metadata => 1, + falloc => 1, + full => 1, +}; + +our $RAW_PREALLOCATION = { + off => 1, + falloc => 1, + full => 1, +}; + our $MAX_VOLUMES_PER_GUEST = 1024; cfs_register_file ('storage.cfg', @@ -152,6 +165,13 @@ my $defaultData = { type => 'string', format => 'pve-storage-format', optional => 1, }, + preallocation => { + description => "Preallocation mode for raw and qcow2 images. " . + "Using 'metadata' on raw images results in preallocation=off.", + type => 'string', enum => ['off', 'metadata', 'falloc', 'full'], + default => 'metadata', + optional => 1, + }, }, }; @@ -444,6 +464,31 @@ sub parse_config { return $cfg; } +sub preallocation_cmd_option { + my ($scfg, $fmt) = @_; + + my $prealloc = $scfg->{preallocation}; + + if ($fmt eq 'qcow2') { + $prealloc = $prealloc // 'metadata'; + + die "preallocation mode '$prealloc' not supported by format '$fmt'\n" + if !$QCOW2_PREALLOCATION->{$prealloc}; + + return "preallocation=$prealloc"; + } elsif ($fmt eq 'raw') { + $prealloc = $prealloc // 'off'; + $prealloc = 'off' if $prealloc eq 'metadata'; + + die "preallocation mode '$prealloc' not supported by format '$fmt'\n" + if !$RAW_PREALLOCATION->{$prealloc}; + + return "preallocation=$prealloc"; + } + + return; +} + # Storage implementation # called during addition of storage (before the new storage config got written) @@ -764,7 +809,8 @@ sub alloc_image { } else { my $cmd = ['/usr/bin/qemu-img', 'create']; - push @$cmd, '-o', 'preallocation=metadata' if $fmt eq 'qcow2'; + my $prealloc_opt = preallocation_cmd_option($scfg, $fmt); + push @$cmd, '-o', $prealloc_opt if defined($prealloc_opt); push @$cmd, '-f', $fmt, $path, "${size}K"; -- 2.30.2