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 BEE1F736DB for ; Thu, 7 Oct 2021 14:45:35 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id B58021A2BE for ; Thu, 7 Oct 2021 14:45:05 +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 B68A61A2B0 for ; Thu, 7 Oct 2021 14:45:04 +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 8EF8A4588A for ; Thu, 7 Oct 2021 14:45:04 +0200 (CEST) To: pve-devel@lists.proxmox.com, Lorenz Stechauner References: <20210928130711.4033669-1-l.stechauner@proxmox.com> <20210928130711.4033669-2-l.stechauner@proxmox.com> From: Fabian Ebner Message-ID: <2e2898aa-483b-7735-9831-d8a04293abc0@proxmox.com> Date: Thu, 7 Oct 2021 14:44:58 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 MIME-Version: 1.0 In-Reply-To: <20210928130711.4033669-2-l.stechauner@proxmox.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-SPAM-LEVEL: Spam detection results: 0 AWL 1.013 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 NICE_REPLY_A -1.964 Looks like a legit reply (A) 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. [cifsplugin.pm, glusterfsplugin.pm, btrfsplugin.pm, nfsplugin.pm, readthedocs.io, dirplugin.pm, plugin.pm] URI_NOVOWEL 0.5 URI hostname has long non-vowel sequence Subject: Re: [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: Thu, 07 Oct 2021 12:45:35 -0000 Am 28.09.21 um 15:07 schrieb Lorenz Stechauner: > 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.) Yes, should be off. See raw_co_create in QEMU's block/file-posix.c > > 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"; > >