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) server-digest SHA256) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id F0EA0CEE5 for ; Wed, 13 Apr 2022 11:43:24 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id E6A3420EA7 for ; Wed, 13 Apr 2022 11:43:24 +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) server-digest SHA256) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS id D8FF820E9E for ; Wed, 13 Apr 2022 11:43:23 +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 B28584194B for ; Wed, 13 Apr 2022 11:43:23 +0200 (CEST) From: Aaron Lauterer To: pve-devel@lists.proxmox.com Cc: Thomas Lamprecht Date: Wed, 13 Apr 2022 11:43:22 +0200 Message-Id: <20220413094322.1736862-1-a.lauterer@proxmox.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL -0.038 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 PROLO_LEO1 0.1 Meta Catches all Leo drug variations so far 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 v2 storage] rbd: fix #3969: add rbd dev paths with cluster info 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: Wed, 13 Apr 2022 09:43:25 -0000 By adding our own customized rbd udev rules and ceph-rbdnamer we can create device paths that include the cluster fsid and avoid any ambiguity if the same pool and namespace combination is used in different clusters we connect to. Additionally to the '/dev/rbd//...' paths we now have '/dev/rbd-pve///...' paths. The other half of the patch makes use of the new device paths in the RBD plugin. The new 'get_rbd_dev_path' method the full device path. In case that the image has been mapped before the rbd-pve udev rule has been installed, it returns the old path. The cluster fsid is read from the 'ceph.conf' file in the case of a hyperconverged setup. In the case of an external Ceph cluster we need to fetch it via a rados api call. Co-authored-by: Thomas Lamprecht Signed-off-by: Aaron Lauterer --- Testing the migration phase can be done by starting a VM first, then install the new package version. Don't forget to have the disk image on an rbd storage with krbd enabled. `qm showcmd VMID --pretty` should still show the old rbd path for that disk. Add a new disk to the running VM and run showcmd again. It should show the new rbd path for the added disk. The udev rules seem to get applied automatically after installing the package. So we should be fine to assume that once we run this new code, newly mapped rbd images should also be exposed in the new /dev/rbd-pve path. I also realized that the rescan logic (pct rescan, qm rescan) gets confused by having two pools with the same name on different clusters. Something we need to take a look at as well. changes since v1: * reverted changes to get_rbd_path * added additional get_rbd_dev_path function that returns the full path Makefile | 1 + PVE/Storage/RBDPlugin.pm | 60 ++++++++++++++++++++++++++++---------- udev-rbd/50-rbd-pve.rules | 2 ++ udev-rbd/Makefile | 21 +++++++++++++ udev-rbd/ceph-rbdnamer-pve | 24 +++++++++++++++ 5 files changed, 92 insertions(+), 16 deletions(-) create mode 100644 udev-rbd/50-rbd-pve.rules create mode 100644 udev-rbd/Makefile create mode 100755 udev-rbd/ceph-rbdnamer-pve diff --git a/Makefile b/Makefile index 431db16..029b586 100644 --- a/Makefile +++ b/Makefile @@ -41,6 +41,7 @@ install: PVE pvesm.1 pvesm.bash-completion pvesm.zsh-completion install -d ${DESTDIR}${SBINDIR} install -m 0755 pvesm ${DESTDIR}${SBINDIR} make -C PVE install + make -C udev-rbd install install -d ${DESTDIR}/usr/share/man/man1 install -m 0644 pvesm.1 ${DESTDIR}/usr/share/man/man1/ gzip -9 -n ${DESTDIR}/usr/share/man/man1/pvesm.1 diff --git a/PVE/Storage/RBDPlugin.pm b/PVE/Storage/RBDPlugin.pm index e287e28..3293565 100644 --- a/PVE/Storage/RBDPlugin.pm +++ b/PVE/Storage/RBDPlugin.pm @@ -8,6 +8,7 @@ use JSON; use Net::IP; use PVE::CephConfig; +use PVE::Cluster qw(cfs_read_file);; use PVE::JSONSchema qw(get_standard_option); use PVE::ProcFSTools; use PVE::RADOS; @@ -22,6 +23,16 @@ my $get_parent_image_name = sub { return $parent->{image} . "@" . $parent->{snapshot}; }; +my $librados_connect = sub { + my ($scfg, $storeid, $options) = @_; + + my $librados_config = PVE::CephConfig::ceph_connect_option($scfg, $storeid); + + my $rados = PVE::RADOS->new(%$librados_config); + + return $rados; +}; + my sub get_rbd_path { my ($scfg, $volume) = @_; my $path = $scfg->{pool} ? $scfg->{pool} : 'rbd'; @@ -30,6 +41,32 @@ my sub get_rbd_path { return $path; }; +my sub get_rbd_dev_path { + my ($scfg, $storeid, $volume) = @_; + + my $cluster_id = ''; + if ($scfg->{monhost}) { + my $rados = $librados_connect->($scfg, $storeid); + $cluster_id = $rados->mon_command({ prefix => 'fsid', format => 'json' })->{fsid}; + } else { + $cluster_id = cfs_read_file('ceph.conf')->{global}->{fsid}; + } + + my $uuid_pattern = "([0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})"; + if ($cluster_id =~ qr/^${uuid_pattern}$/is) { + $cluster_id = $1; # use untained value + } else { + die "cluster fsid has invalid format\n"; + } + + my $rbd_path = get_rbd_path($scfg, $volume); + my $pve_path = "/dev/rbd-pve/${cluster_id}/${rbd_path}"; + my $path = "/dev/rbd/${rbd_path}"; + + return $path if -e $path && !-e $pve_path; # mapped before rbd-pve udev rule existed + return $pve_path; +} + my $build_cmd = sub { my ($binary, $scfg, $storeid, $op, @options) = @_; @@ -70,16 +107,6 @@ my $rados_cmd = sub { return $build_cmd->('/usr/bin/rados', $scfg, $storeid, $op, @options); }; -my $librados_connect = sub { - my ($scfg, $storeid, $options) = @_; - - my $librados_config = PVE::CephConfig::ceph_connect_option($scfg, $storeid); - - my $rados = PVE::RADOS->new(%$librados_config); - - return $rados; -}; - # needed for volumes created using ceph jewel (or higher) my $krbd_feature_update = sub { my ($scfg, $storeid, $name) = @_; @@ -380,9 +407,10 @@ sub path { my ($vtype, $name, $vmid) = $class->parse_volname($volname); $name .= '@'.$snapname if $snapname; - my $rbd_path = get_rbd_path($scfg, $name); - return ("/dev/rbd/${rbd_path}", $vmid, $vtype) if $scfg->{krbd}; + my $rbd_dev_path = get_rbd_dev_path($scfg, $storeid, $name); + return ($rbd_dev_path, $vmid, $vtype) if $scfg->{krbd}; + my $rbd_path = get_rbd_path($scfg, $name); my $path = "rbd:${rbd_path}"; $path .= ":conf=$cmd_option->{ceph_conf}" if $cmd_option->{ceph_conf}; @@ -619,8 +647,8 @@ sub deactivate_storage { } my sub get_kernel_device_path { - my ($scfg, $name) = @_; - return "/dev/rbd/" . get_rbd_path($scfg, $name); + my ($scfg, $storeid, $name) = @_; + return get_rbd_dev_path($scfg, $storeid, $name); }; sub map_volume { @@ -631,7 +659,7 @@ sub map_volume { my $name = $img_name; $name .= '@'.$snapname if $snapname; - my $kerneldev = get_kernel_device_path($scfg, $name); + my $kerneldev = get_kernel_device_path($scfg, $storeid, $name); return $kerneldev if -b $kerneldev; # already mapped @@ -650,7 +678,7 @@ sub unmap_volume { my ($vtype, $name, $vmid) = $class->parse_volname($volname); $name .= '@'.$snapname if $snapname; - my $kerneldev = get_kernel_device_path($scfg, $name); + my $kerneldev = get_kernel_device_path($scfg, $storeid, $name); if (-b $kerneldev) { my $cmd = $rbd_cmd->($scfg, $storeid, 'unmap', $kerneldev); diff --git a/udev-rbd/50-rbd-pve.rules b/udev-rbd/50-rbd-pve.rules new file mode 100644 index 0000000..79432df --- /dev/null +++ b/udev-rbd/50-rbd-pve.rules @@ -0,0 +1,2 @@ +KERNEL=="rbd[0-9]*", ENV{DEVTYPE}=="disk", PROGRAM="/usr/libexec/ceph-rbdnamer-pve %k", SYMLINK+="rbd-pve/%c" +KERNEL=="rbd[0-9]*", ENV{DEVTYPE}=="partition", PROGRAM="/usr/libexec/ceph-rbdnamer-pve %k", SYMLINK+="rbd-pve/%c-part%n" diff --git a/udev-rbd/Makefile b/udev-rbd/Makefile new file mode 100644 index 0000000..065933b --- /dev/null +++ b/udev-rbd/Makefile @@ -0,0 +1,21 @@ +PACKAGE=libpve-storage-perl + +DESTDIR= +PREFIX=/usr +LIBEXECDIR=${PREFIX}/libexec +LIBDIR=${PREFIX}/lib + +all: + +.PHONY: install +install: 50-rbd-pve.rules ceph-rbdnamer-pve + install -d ${DESTDIR}${LIBEXECDIR} + install -m 0755 ceph-rbdnamer-pve ${DESTDIR}${LIBEXECDIR} + install -d ${DESTDIR}${LIBDIR}/udev/rules.d + install -m 0644 50-rbd-pve.rules ${DESTDIR}${LIBDIR}/udev/rules.d + +.PHONY: clean +clean: + +.PHONY: distclean +distclean: clean diff --git a/udev-rbd/ceph-rbdnamer-pve b/udev-rbd/ceph-rbdnamer-pve new file mode 100755 index 0000000..23dd626 --- /dev/null +++ b/udev-rbd/ceph-rbdnamer-pve @@ -0,0 +1,24 @@ +#!/bin/sh + +DEV=$1 +NUM=`echo $DEV | sed 's#p.*##g; s#[a-z]##g'` +POOL=`cat /sys/devices/rbd/$NUM/pool` +CLUSTER_FSID=`cat /sys/devices/rbd/$NUM/cluster_fsid` + +if [ -f /sys/devices/rbd/$NUM/pool_ns ]; then + NAMESPACE=`cat /sys/devices/rbd/$NUM/pool_ns` +else + NAMESPACE="" +fi +IMAGE=`cat /sys/devices/rbd/$NUM/name` +SNAP=`cat /sys/devices/rbd/$NUM/current_snap` + +echo -n "/$CLUSTER_FSID/$POOL" + +if [ -n "$NAMESPACE" ]; then + echo -n "/$NAMESPACE" +fi +echo -n "/$IMAGE" +if [ "$SNAP" != "-" ]; then + echo -n "@$SNAP" +fi -- 2.30.2