mirror of
https://github.com/xcat2/xcat-core.git
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94ba8aedbc
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@7086 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
1741 lines
57 KiB
Perl
1741 lines
57 KiB
Perl
#!/usr/bin/env perl
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# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
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package xCAT_plugin::kvm;
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BEGIN
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{
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$::XCATROOT = $ENV{'XCATROOT'} ? $ENV{'XCATROOT'} : '/opt/xcat';
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}
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use lib "$::XCATROOT/lib/perl";
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use xCAT::GlobalDef;
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use xCAT::NodeRange;
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use xCAT::VMCommon;
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use xCAT_monitoring::monitorctrl;
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use xCAT::Table;
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use XML::Simple qw(XMLout);
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use Thread qw(yield);
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use File::Basename qw/fileparse/;
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use File::Path qw/mkpath/;
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use IO::Socket;
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use IO::Select;
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use strict;
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#use warnings;
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my $use_xhrm=0; #xCAT Hypervisor Resource Manager, to satisfy networking and storage prerequisites, default to not using it for the moment
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my $imgfmt='raw'; #use raw format by default
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my $clonemethod='qemu-img'; #use qemu-img command
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my %vm_comm_pids;
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my %offlinehyps;
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my %hypstats;
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my %offlinevms;
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my @destblacklist;
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my $updatetable; #when a function is performing per-node operations, it can queue up a table update by populating parts of this hash
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my $confdata; #a reference to serve as a common pointer betweer VMCommon functions and this plugin
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my $libvirtsupport;
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$libvirtsupport = eval {
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require Sys::Virt;
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if (Sys::Virt->VERSION < "0.2.0") {
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die;
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}
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1;
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};
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use XML::Simple;
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$XML::Simple::PREFERRED_PARSER='XML::Parser';
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use Data::Dumper;
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use POSIX "WNOHANG";
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use Storable qw(freeze thaw);
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use IO::Select;
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use IO::Handle;
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use Time::HiRes qw(gettimeofday sleep);
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use xCAT::DBobjUtils;
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use Getopt::Long;
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use xCAT::SvrUtils;
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my %runningstates;
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my $vmmaxp=64;
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my $mactab;
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my %usedmacs;
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my $status_noop="XXXno-opXXX";
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sub handled_commands {
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#unless ($libvirtsupport) {
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# return {};
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#}
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return {
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rpower => 'nodehm:power,mgt',
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mkvm => 'nodehm:power,mgt',
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chvm => 'nodehm:power,mgt',
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rmigrate => 'nodehm:mgt',
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getcons => 'nodehm:mgt',
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#rvitals => 'nodehm:mgt',
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#rinv => 'nodehm:mgt',
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getrvidparms => 'nodehm:mgt',
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lsvm => 'hypervisor:type',
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rbeacon => 'nodehm:mgt',
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revacuate => 'hypervisor:type',
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vmstatenotify => 'hypervisor:type',
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#rspreset => 'nodehm:mgt',
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#rspconfig => 'nodehm:mgt',
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#rbootseq => 'nodehm:mgt',
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#reventlog => 'nodehm:mgt',
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};
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}
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my $hypconn;
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my $hyp;
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my $doreq;
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my %hyphash;
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my $node;
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my $vmtab;
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my $kvmdatatab;
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sub build_pool_xml {
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my $url = shift;
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my $mounthost = shift;
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unless ($mounthost) { $mounthost = $hyp; }
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my $pool;
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my $host = $url;
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$host =~ s/.*:\/\///;
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$host =~ s/(\/.*)//;
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my $srcpath = $1;
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my $uuid = xCAT::Utils::genUUID(url=>$url);
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my $pooldesc = '<pool type="netfs">';
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$pooldesc .= '<name>'.$url.'</name>'; #Hey, at least libvirt doesn't have stupid name restrictions...
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$pooldesc .= '<uuid>'.$uuid.'</uuid>>';
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$pooldesc .= '<source>';
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$pooldesc .= '<host name="'.$host.'"/>';
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$pooldesc .= '<dir path="'.$srcpath.'"/>';
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$pooldesc .= '</source>';
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$pooldesc .= '<target><path>/var/lib/xcat/pools/'.$uuid.'</path></target></pool>';
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system("ssh $mounthost mkdir -p /var/lib/xcat/pools/$uuid"); #ok, so not *technically* just building XML, but here is the cheapest
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#place to know uuid... And yes, we must be allowed to ssh in
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#libvirt just isn't capable enough for this sort of usage
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return $pooldesc;
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}
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sub get_storage_pool_by_url {
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my $url = shift;
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my $virtconn = shift;
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my $mounthost = shift;
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unless ($virtconn) { $virtconn = $hypconn; }
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my @currpools = $virtconn->list_storage_pools();
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my $poolobj;
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my $pool;
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foreach my $poolo (@currpools) {
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$poolobj = $poolo;
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$pool = XMLin($poolobj->get_xml_description());
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if ($pool->{name} eq $url) {
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last;
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}
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$pool = undef;
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}
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if ($pool) { return $poolobj; }
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$poolobj = $virtconn->create_storage_pool(build_pool_xml($url,$mounthost));
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return $poolobj;
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}
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sub get_multiple_paths_by_url {
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my %args =@_;
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my $url = $args{url};
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my $node = $args{node};
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my $poolobj = get_storage_pool_by_url($url);
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unless ($poolobj) { die "Cound not get storage pool for $url"; }
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$poolobj->refresh(); #if volumes change on nfs storage, libvirt is too dumb to notice
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my @volobjs = $poolobj->list_volumes();
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my %paths;
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foreach (@volobjs) {
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if ($_->get_name() =~ /^$node\.([^\.]*)\.([^\.]*)$/) {
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$paths{$_->get_path()} = {device=>$1,format=>$2};
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} elsif ($_->get_name() =~ /^$node\.([^\.]*)$/) {
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$paths{$_->get_path()} = {device=>$1,format=>'raw'};
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#this requires any current user of qcow2 to migrate, unfortunate to escape
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#a vulnerability where raw user could write malicious qcow2 to header
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#and use that to get at files on the hypervisor os with escalated privilege
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}
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}
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return \%paths;
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}
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sub get_filepath_by_url { #at the end of the day, the libvirt storage api gives the following capability:
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#mount, limited ls, and qemu-img
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#it does not frontend mkdir, and does not abstract away any nitty-gritty detail, you must know:
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#the real mountpoint, and the real full path to storage
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#in addition to this, subdirectories are not allowed, and certain extra metadata must be created
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#not a big fan compared to ssh and run the commands myself, but it's the most straightforward path
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#to avoid ssh for users who dislike that style access
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my %args = @_;
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my $url = $args{url};
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my $dev = $args{dev};
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my $create = $args{create};
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my $force = $args{force};
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my $format = $args{format};
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unless ($format) {
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$format = 'qcow2';
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}
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#ok, now that we have the pool, we need the storage volume from the pool for the node/dev
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my $poolobj = get_storage_pool_by_url($url);
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unless ($poolobj) { die "Could not get storage pool for $url"; }
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$poolobj->refresh(); #if volumes change on nfs storage, libvirt is too dumb to notice
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my @volobjs = $poolobj->list_volumes();
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my $desiredname = $node.'.'.$dev.'.'.$format;
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foreach (@volobjs) {
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if ($_->get_name() eq $desiredname) {
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if ($create) {
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if ($force) { #must destroy the storage
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$_->delete();
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} else {
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die "Path already exists";
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}
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} else {
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return $_->get_path();
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}
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}
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}
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if ($create) {
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if ($create =~ /^clone=/) {
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} else {
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my $vol = $poolobj->create_volume("<volume><name>".$desiredname."</name><target><format type='$format'/></target><capacity>".getUnits($create,"G",1)."</capacity><allocation>0</allocation></volume>");
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if ($vol) { return $vol->get_path(); }
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}
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} else {
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return undef;
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}
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}
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sub nodesockopen {
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my $node = shift;
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my $port = shift;
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unless ($node) { return 0; }
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my $socket;
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my $addr = gethostbyname($node);
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my $sin = sockaddr_in($port,$addr);
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my $proto = getprotobyname('tcp');
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socket($socket,PF_INET,SOCK_STREAM,$proto) || return 0;
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connect($socket,$sin) || return 0;
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return 1;
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}
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sub waitforack {
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my $sock = shift;
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my $select = new IO::Select;
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$select->add($sock);
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my $str;
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if ($select->can_read(60)) { # Continue after 10 seconds, even if not acked...
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if ($str = <$sock>) {
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} else {
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$select->remove($sock); #Block until parent acks data
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}
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}
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}
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sub build_oshash {
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my %rethash;
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$rethash{type}->{content}='hvm';
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if (defined $confdata->{vm}->{$node}->[0]->{bootorder}) {
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my $bootorder = $confdata->{vm}->{$node}->[0]->{bootorder};
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my @bootdevs = split(/[:,]/,$bootorder);
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my $bootnum = 0;
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foreach (@bootdevs) {
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if ("net" eq $_ or "n" eq $_) {
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$rethash{boot}->[$bootnum]->{dev}="network";
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} else {
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$rethash{boot}->[$bootnum]->{dev}=$_;
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}
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$bootnum++;
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}
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} else {
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$rethash{boot}->[0]->{dev}='network';
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$rethash{boot}->[1]->{dev}='hd';
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}
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return \%rethash;
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}
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sub build_diskstruct {
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my $cdloc=shift;
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my @returns=();
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my $currdev;
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my @suffixes=('a','b','d'..'z');
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my $suffidx=0;
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if ($cdloc) {
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my $cdhash;
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$cdhash->{device}='cdrom';
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if ($cdloc =~ /^\/dev/) {
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$cdhash->{type}='block';
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} else {
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$cdhash->{type}='file';
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}
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$cdhash->{source}->{file}=$cdloc;
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$cdhash->{readonly};
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$cdhash->{target}->{dev}='hdc';
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push @returns,$cdhash;
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}
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if (defined $confdata->{vm}->{$node}->[0]->{storage}) {
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my $disklocs=$confdata->{vm}->{$node}->[0]->{storage};
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my @locations=split /\|/,$disklocs;
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foreach my $disk (@locations) {
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#Setting default values of a virtual disk backed by a file at hd*.
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my $diskhash;
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$disk =~ s/=(.*)//;
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my $model = $1;
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unless ($model) { $model = 'ide'; }
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my $prefix='hd';
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if ($model eq 'virtio') {
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$prefix='vd';
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} elsif ($model eq 'scsi') {
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$prefix='sd';
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}
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$diskhash->{type} = 'file';
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$diskhash->{device} = 'disk';
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$diskhash->{target}->{dev} = $prefix.$suffixes[$suffidx];
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$diskhash->{target}->{bus} = $model;
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my @disk_parts = split(/,/, $disk);
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#Find host file and determine if it is a file or a block device.
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if (substr($disk_parts[0], 0, 4) eq 'phy:') {
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$diskhash->{type}='block';
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$diskhash->{source}->{dev} = substr($disk_parts[0], 4);
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} elsif ($disk_parts[0] =~ m/^nfs:\/\/(.*)$/) {
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my %disks = %{get_multiple_paths_by_url(url=>$disk_parts[0],node=>$node)};
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unless (keys %disks) {
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die "Unable to find any persistent disks at ".$disk_parts[0];
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}
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foreach (keys %disks) {
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my $tdiskhash;
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$tdiskhash->{type};
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$tdiskhash->{device}='disk';
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$tdiskhash->{driver}->{name}='qemu';
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$tdiskhash->{driver}->{type}=$disks{$_}->{format};
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$tdiskhash->{source}->{file}=$_;
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$tdiskhash->{target}->{dev} = $disks{$_}->{device};
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if ($disks{$_} =~ /^vd/) {
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$tdiskhash->{target}->{bus} = 'virtio';
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} elsif ($disks{$_} =~ /^hd/) {
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$tdiskhash->{target}->{bus} = 'ide';
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} elsif ($disks{$_} =~ /^sd/) {
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$tdiskhash->{target}->{bus} = 'scsi';
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}
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push @returns,$tdiskhash;
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}
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next; #nfs:// skips the other stuff
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#$diskhash->{source}->{file} = get_filepath_by_url(url=>$disk_parts[0],dev=>$diskhash->{target}->{dev}); #"/var/lib/xcat/vmnt/nfs_".$1."/$node/".$diskhash->{target}->{dev};
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} else { #currently, this would be a bare file to slap in as a disk
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$diskhash->{source}->{file} = $disk_parts[0];
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}
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#See if there are any other options. If not, increment suffidx because the already determined device node was used.
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#evidently, we support specificying explicitly how to target the system..
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if (@disk_parts gt 1) {
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my @disk_opts = split(/:/, $disk_parts[1]);
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if ($disk_opts[0] ne '') {
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$diskhash->{target}->{dev} = $disk_opts[0];
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} else {
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$suffidx++;
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}
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if ($disk_opts[1] eq 'cdrom') {
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$diskhash->{device}='cdrom';
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}
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} else {
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$suffidx++;
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}
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push @returns,$diskhash;
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}
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}
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return \@returns;
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}
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sub getNodeUUID {
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my $node = shift;
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if ($confdata->{vpd}->{$node}->[0] and $confdata->{vpd}->{$node}->[0]->{uuid}) {
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return $confdata->{vpd}->{$node}->[0]->{uuid};
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}
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if ($confdata->{mac}->{$node}->[0]->{mac}) { #a uuidv1 is possible, generate that for absolute uniqueness guarantee
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my $mac = $confdata->{mac}->{$node}->[0]->{mac};
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$mac =~ s/\|.*//;
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$mac =~ s/!.*//;
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$updatetable->{vpd}->{$node}={uuid=>xCAT::Utils::genUUID(mac=>$mac)};
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} else {
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$updatetable->{vpd}->{$node}={uuid=>xCAT::Utils::genUUID()};
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}
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return $updatetable->{vpd}->{$node};
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}
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sub build_nicstruct {
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my $rethash;
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my $node = shift;
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my @macs=();
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my @nics=();
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if ($confdata->{vm}->{$node}->[0]->{nics}) {
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@nics = split /,/,$confdata->{vm}->{$node}->[0]->{nics};
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} else {
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@nics = ('virbr0');
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}
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if ($confdata->{mac}->{$node}->[0]->{mac}) {
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my $macdata=$confdata->{mac}->{$node}->[0]->{mac};
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foreach my $macaddr (split /\|/,$macdata) {
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$macaddr =~ s/\!.*//;
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push @macs,$macaddr;
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}
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}
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unless (scalar(@macs) >= scalar(@nics)) {
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#TODO: MUST REPLACE WITH VMCOMMON CODE
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my $neededmacs=scalar(@nics) - scalar(@macs);
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my $macstr;
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my $tmac;
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my $leading;
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srand;
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while ($neededmacs--) {
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my $allbutmult = 65279; # & mask for bitwise clearing of the multicast bit of mac
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my $localad=512; # | to set the bit for locally admnistered mac address
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$leading=int(rand(65535));
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$leading=$leading|512;
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$leading=$leading&65279;
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my $n=inet_aton($node);
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my $tail;
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if ($n) {
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$tail=unpack("N",$n);
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}
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unless ($tail) {
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$tail=int(rand(4294967295));
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}
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$tmac = sprintf("%04x%08x",$leading,$tail);
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$tmac =~ s/(..)(..)(..)(..)(..)(..)/$1:$2:$3:$4:$5:$6/;
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if ($usedmacs{$tmac}) { #If we have a collision we can actually perceive, retry the generation of this mac
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$neededmacs++;
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next;
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}
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$usedmacs{$tmac}=1;
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push @macs,$tmac;
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}
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#$mactab->setNodeAttribs($node,{mac=>join('|',@macs)});
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#$nrtab->setNodeAttribs($node,{netboot=>'pxe'});
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#$doreq->({command=>['makedhcp'],node=>[$node]});
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}
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my @rethashes;
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foreach (@macs) {
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my $rethash;
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my $nic = shift @nics;
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my $type = 'e1000'; #better default fake nic than rtl8139, relevant to most
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unless ($nic) {
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last; #Don't want to have multiple vnics tied to the same switch
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}
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$nic =~ s/.*://; #the detail of how the bridge was built is of no
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#interest to this segment of code
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if ($nic =~ /=/) {
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($nic,$type) = split /=/,$nic,2;
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}
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$rethash->{type}='bridge';
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$rethash->{mac}->{address}=$_;
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$rethash->{source}->{bridge}=$nic;
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$rethash->{model}->{type}=$type;
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push @rethashes,$rethash;
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}
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return \@rethashes;
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}
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sub getUnits {
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my $amount = shift;
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my $defunit = shift;
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my $divisor=shift;
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unless ($divisor) {
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$divisor = 1;
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}
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if ($amount =~ /(\D)$/) { #If unitless, add unit
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$defunit=$1;
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chop $amount;
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}
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if ($defunit =~ /k/i) {
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return $amount*1024/$divisor;
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} elsif ($defunit =~ /m/i) {
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return $amount*1048576/$divisor;
|
|
} elsif ($defunit =~ /g/i) {
|
|
return $amount*1073741824/$divisor;
|
|
}
|
|
}
|
|
|
|
sub build_xmldesc {
|
|
my $node = shift;
|
|
my $cdloc=shift;
|
|
my %xtree=();
|
|
$xtree{type}='kvm';
|
|
$xtree{name}->{content}=$node;
|
|
$xtree{uuid}->{content}=getNodeUUID($node);
|
|
$xtree{os} = build_oshash();
|
|
if (defined $confdata->{vm}->{$node}->[0]->{memory}) {
|
|
$xtree{memory}->{content}=getUnits($confdata->{vm}->{$node}->[0]->{memory},"M",1024);
|
|
} else {
|
|
$xtree{memory}->{content}=524288;
|
|
}
|
|
if (defined $confdata->{vm}->{$node}->[0]->{cpus}) {
|
|
$xtree{vcpu}->{content}=$confdata->{vm}->{$node}->[0]->{cpus};
|
|
} else {
|
|
$xtree{vcpu}->{content}=1;
|
|
}
|
|
if (defined ($confdata->{vm}->{$node}->[0]->{clockoffset})) {
|
|
#If user requested a specific behavior, give it
|
|
$xtree{clock}->{offset}=$confdata->{vm}->{$node}->[0]->{clockoffset};
|
|
} else {
|
|
#Otherwise, only do local time for things that look MS
|
|
if (defined ($confdata->{nodetype}->{$node}->[0]->{os}) and $confdata->{nodetype}->{$node}->[0]->{os} =~ /win.*/) {
|
|
$xtree{clock}->{offset}='localtime';
|
|
} else { #For everyone else, utc is preferred generally
|
|
$xtree{clock}->{offset}='utc';
|
|
}
|
|
}
|
|
|
|
$xtree{features}->{pae}={};
|
|
$xtree{features}->{acpi}={};
|
|
$xtree{features}->{apic}={};
|
|
$xtree{features}->{content}="\n";
|
|
$xtree{devices}->{disk}=build_diskstruct($cdloc);
|
|
$xtree{devices}->{interface}=build_nicstruct($node);
|
|
#use content to force xml simple to not make model the 'name' of video
|
|
$xtree{devices}->{video}= [ { 'content'=>'','model'=> {type=>'vga',vram=>8192}}];
|
|
$xtree{devices}->{input}->{type}='tablet';
|
|
$xtree{devices}->{input}->{bus}='usb';
|
|
$xtree{devices}->{graphics}->{type}='vnc';
|
|
$xtree{devices}->{console}->{type}='pty';
|
|
$xtree{devices}->{console}->{target}->{port}='1';
|
|
return XMLout(\%xtree,RootName=>"domain");
|
|
}
|
|
|
|
sub refresh_vm {
|
|
my $dom = shift;
|
|
|
|
my $newxml=$dom->get_xml_description();
|
|
$updatetable->{kvm_nodedata}->{$node}={xml=>$newxml};
|
|
$newxml = XMLin($newxml);
|
|
my $vncport=$newxml->{devices}->{graphics}->{port};
|
|
my $stty=$newxml->{devices}->{console}->{tty};
|
|
$updatetable->{vm}->{$node}={vncport=>$vncport,textconsole=>$stty};
|
|
#$vmtab->setNodeAttribs($node,{vncport=>$vncport,textconsole=>$stty});
|
|
return {vncport=>$vncport,textconsole=>$stty};
|
|
}
|
|
|
|
sub getcons {
|
|
my $node = shift();
|
|
my $type = shift();
|
|
my $dom;
|
|
eval {
|
|
$dom = $hypconn->get_domain_by_name($node);
|
|
};
|
|
unless ($dom) {
|
|
return 1,"Unable to query running VM";
|
|
}
|
|
my $consdata=refresh_vm($dom);
|
|
my $hyper=$confdata->{vm}->{$node}->[0]->{host};
|
|
|
|
if ($type eq "text") {
|
|
my $serialspeed;
|
|
if ($confdata->{nodehm}) {
|
|
$serialspeed=$confdata->{nodehm}->{$node}->[0]->{serialspeed};
|
|
}
|
|
my $sconsparms = {node=>[{name=>[$node]}]};
|
|
$sconsparms->{node}->[0]->{sshhost}=[$hyper];
|
|
$sconsparms->{node}->[0]->{psuedotty}=[$consdata->{textconsole}];
|
|
$sconsparms->{node}->[0]->{baudrate}=[$serialspeed];
|
|
return (0,$sconsparms);
|
|
} elsif ($type eq "vnc") {
|
|
return (0,'ssh+vnc@'.$hyper.": localhost:".$consdata->{vncport}); #$consdata->{vncport});
|
|
}
|
|
}
|
|
sub getrvidparms {
|
|
my $node=shift;
|
|
my $location = getcons($node,"vnc");
|
|
if ($location =~ /ssh\+vnc@([^:]*):([^:]*):(\d+)/) {
|
|
my @output = (
|
|
"method: kvm",
|
|
"server: $1",
|
|
"vncdisplay: $2:$3",
|
|
"virturi: ".$hypconn->get_uri(),
|
|
"virtname: $node",
|
|
);
|
|
return 0,@output;
|
|
} else {
|
|
return (1,"Error: Unable to determine rvid destination for $node");
|
|
}
|
|
}
|
|
|
|
sub pick_target {
|
|
my $node = shift;
|
|
my $addmemory = shift;
|
|
my $target;
|
|
my $mostfreememory=undef;
|
|
my $currentfreememory;
|
|
my $candidates= $confdata->{vm}->{$node}->[0]->{migrationdest};
|
|
my $currhyp=$confdata->{vm}->{$node}->[0]->{host};
|
|
#caching strategy is implicit on whether $addmemory is passed.
|
|
unless ($candidates) {
|
|
return undef;
|
|
}
|
|
foreach (noderange($candidates)) {
|
|
my $targconn;
|
|
my $cand=$_;
|
|
if ($_ eq $currhyp) { next; } #skip current node
|
|
if ($offlinehyps{$_}) { next }; #skip already offlined nodes
|
|
if (grep { "$_" eq $cand } @destblacklist) { next; } #skip blacklisted destinations
|
|
if ($addmemory and defined $hypstats{$_}->{freememory}) { #only used cache results when addmemory suggests caching can make sense
|
|
$currentfreememory=$hypstats{$_}->{freememory}
|
|
} else {
|
|
if (not nodesockopen($_,22)) { $offlinehyps{$_}=1; next; } #skip unusable destinations
|
|
eval { #Sys::Virt has bugs that cause it to die out in weird ways some times, contain it here
|
|
$targconn = Sys::Virt->new(uri=>"qemu+ssh://root@".$_."/system?no_tty=1&netcat=nc");
|
|
};
|
|
unless ($targconn) {
|
|
eval { #Sys::Virt has bugs that cause it to die out in weird ways some times, contain it here
|
|
$targconn = Sys::Virt->new(uri=>"qemu+ssh://root@".$_."/system?no_tty=1");
|
|
};
|
|
}
|
|
unless ($targconn) { next; } #skip unreachable destinations
|
|
$currentfreememory=$targconn->get_node_info()->{memory};
|
|
foreach ($targconn->list_domains()) {
|
|
if ($_->get_name() eq 'Domain-0') { next; } #Dom0 memory usage is elastic, we are interested in HVM DomU memory, which is inelastic
|
|
|
|
$currentfreememory -= $_->get_info()->{memory};
|
|
}
|
|
$hypstats{$cand}->{freememory}=$currentfreememory;
|
|
}
|
|
if ($addmemory and $addmemory->{$_}) {
|
|
$currentfreememory -= $addmemory->{$_};
|
|
}
|
|
if (not defined ($mostfreememory)) {
|
|
$mostfreememory=$currentfreememory;
|
|
$target=$_;
|
|
} elsif ($currentfreememory > $mostfreememory) {
|
|
$mostfreememory=$currentfreememory;
|
|
$target=$_;
|
|
}
|
|
}
|
|
return $target;
|
|
}
|
|
|
|
|
|
sub migrate {
|
|
$node = shift();
|
|
my $targ = shift();
|
|
if ($offlinevms{$node}) {
|
|
return power("on");
|
|
}
|
|
#TODO: currently, we completely serialize migration events. Some IO fabrics can facilitate concurrent migrations
|
|
#One trivial example is an ethernet port aggregation where a single conversation may likely be unable to utilize all the links
|
|
#because traffic is balanced by a mac address hashing algorithim, but talking to several hypervisors would have
|
|
#distinct peers that can be balanced more effectively.
|
|
#The downside is that migration is sufficiently slow that a lot can change in the intervening time on a target hypervisor, but
|
|
#this should not be an issue if:
|
|
#xCAT is the only path a configuration is using to make changes in the virtualization stack
|
|
#xCAT implements a global semaphore mechanism that this plugin can use to assure migration targets do not change by our own hand..
|
|
#failing that.. flock.
|
|
unless ($targ) {
|
|
$targ = pick_target($node);
|
|
}
|
|
unless ($targ) {
|
|
return (1,"Unable to identify a suitable target host for guest $node");
|
|
}
|
|
if ($use_xhrm) {
|
|
xhrm_satisfy($node,$targ);
|
|
}
|
|
my $prevhyp;
|
|
my $target = "qemu+ssh://root@".$targ."/system?no_tty=1";
|
|
my $currhyp="qemu+ssh://root@";
|
|
if ($confdata->{vm}->{$node}->[0]->{host}) {
|
|
$prevhyp=$confdata->{vm}->{$node}->[0]->{host};
|
|
$currhyp.=$prevhyp;
|
|
} else {
|
|
return (1,"Unable to find current location of $node");
|
|
}
|
|
$currhyp.="/system?no_tty=1";
|
|
if ($currhyp eq $target) {
|
|
return (0,"Guest is already on host $targ");
|
|
}
|
|
my $srchypconn;
|
|
my $desthypconn;
|
|
unless ($offlinehyps{$prevhyp} or nodesockopen($prevhyp,22)) {
|
|
$offlinehyps{$prevhyp}=1;
|
|
}
|
|
my $srcnetcatadd="&netcat=nc";
|
|
unless ($offlinehyps{$prevhyp}) {
|
|
eval {#Contain Sys::Virt bugs
|
|
$srchypconn= Sys::Virt->new(uri=>"qemu+ssh://root@".$prevhyp."/system?no_tty=1$srcnetcatadd");
|
|
};
|
|
unless ($srchypconn) {
|
|
$srcnetcatadd="";
|
|
eval {#Contain Sys::Virt bugs
|
|
$srchypconn= Sys::Virt->new(uri=>"qemu+ssh://root@".$prevhyp."/system?no_tty=1");
|
|
};
|
|
}
|
|
}
|
|
unless ($srchypconn) {
|
|
return (1,"Unable to reach $prevhyp to perform operation of $node, use nodech to change vm.host if certain of no split-brain possibility exists");
|
|
}
|
|
unless ($offlinehyps{$targ} or nodesockopen($targ,22)) {
|
|
$offlinehyps{$targ}=1;
|
|
}
|
|
my $destnetcatadd="&netcat=nc";
|
|
unless ($offlinehyps{$targ}) {
|
|
eval {#Contain Sys::Virt bugs
|
|
$desthypconn= Sys::Virt->new(uri=>$target.$destnetcatadd);
|
|
};
|
|
unless ($desthypconn) {
|
|
$destnetcatadd="";
|
|
eval {#Contain Sys::Virt bugs
|
|
$desthypconn= Sys::Virt->new(uri=>$target);
|
|
};
|
|
}
|
|
}
|
|
unless ($desthypconn) {
|
|
return (1,"Unable to reach $targ to perform operation of $node, destination unusable.");
|
|
}
|
|
if (defined $confdata->{vm}->{$node}->[0]->{storage} and $confdata->{vm}->{$node}->[0]->{storage} =~ /^nfs:/) {
|
|
my $urls = $confdata->{vm}->{$node}->[0]->{storage} and $confdata->{vm}->{$node}->[0]->{storage};
|
|
foreach (split /,/,$urls) {
|
|
s/=.*//;
|
|
get_storage_pool_by_url($_,$desthypconn,$targ);
|
|
}
|
|
}
|
|
my $sock = IO::Socket::INET->new(Proto=>'udp');
|
|
my $ipa=inet_aton($node);
|
|
my $pa;
|
|
if ($ipa) {
|
|
$pa=sockaddr_in(7,$ipa); #UDP echo service, not needed to be actually
|
|
}
|
|
#serviced, we just want to trigger MAC move in the switch forwarding dbs
|
|
my $nomadomain;
|
|
eval {
|
|
$nomadomain = $srchypconn->get_domain_by_name($node);
|
|
};
|
|
unless ($nomadomain) {
|
|
return (1,"Unable to find $node on $prevhyp, vm.host may be incorrect or a split-brain condition, such as libvirt forgetting a guest due to restart or bug.");
|
|
}
|
|
my $newdom;
|
|
my $errstr;
|
|
eval {
|
|
$newdom=$nomadomain->migrate($desthypconn,&Sys::Virt::Domain::MIGRATE_LIVE,undef,undef,0);
|
|
};
|
|
if ($@) { $errstr = $@; }
|
|
#TODO: If it looks like it failed to migrate, ensure the guest exists only in one place
|
|
if ($errstr) {
|
|
return (1,"Failed migration of $node from $prevhyp to $targ: $errstr");
|
|
}
|
|
unless ($newdom) {
|
|
return (1,"Failed migration from $prevhyp to $targ");
|
|
}
|
|
if ($ipa) {
|
|
system("arp -d $node"); #Make ethernet fabric take note of change
|
|
send($sock,"dummy",0,$pa); #UDP packet to force forwarding table update in switches, ideally a garp happened, but just in case...
|
|
}
|
|
#BTW, this should all be moot since the underlying kvm seems good about gratuitous traffic, but it shouldn't hurt anything
|
|
refresh_vm($newdom);
|
|
#The migration seems tohave suceeded, but to be sure...
|
|
close($sock);
|
|
if ($desthypconn->get_domain_by_name($node)) {
|
|
#$updatetable->{vm}->{$node}->{host} = $targ;
|
|
$vmtab->setNodeAttribs($node,{host=>$targ});
|
|
return (0,"migrated to $targ");
|
|
} else { #This *should* not be possible
|
|
return (1,"Failed migration from $prevhyp to $targ, despite normal looking run...");
|
|
}
|
|
}
|
|
|
|
|
|
sub getpowstate {
|
|
my $dom = shift;
|
|
my $vmstat;
|
|
if ($dom) {
|
|
$vmstat = $dom->get_info;
|
|
}
|
|
if ($vmstat and $runningstates{$vmstat->{state}}) {
|
|
return "on";
|
|
} else {
|
|
return "off";
|
|
}
|
|
}
|
|
|
|
sub xhrm_satisfy {
|
|
my $node = shift;
|
|
my $hyp = shift;
|
|
my $rc=0;
|
|
my @nics=();
|
|
my @storage=();
|
|
if ($confdata->{vm}->{$node}->[0]->{nics}) {
|
|
@nics = split /,/,$confdata->{vm}->{$node}->[0]->{nics};
|
|
}
|
|
foreach (@nics) {
|
|
s/=.*//; #this code cares not about the model of virtual nic
|
|
$rc |=system("ssh $hyp xHRM bridgeprereq $_");
|
|
}
|
|
return $rc;
|
|
}
|
|
sub makedom {
|
|
my $node=shift;
|
|
my $cdloc = shift;
|
|
my $xml = shift;
|
|
my $dom;
|
|
if (not $xml and $confdata->{kvmnodedata}->{$node} and $confdata->{kvmnodedata}->{$node}->[0] and $confdata->{kvmnodedata}->{$node}->[0]->{xml}) {
|
|
$xml = $confdata->{kvmnodedata}->{$node}->[0]->{xml};
|
|
} elsif (not $xml) {
|
|
$xml = build_xmldesc($node,$cdloc);
|
|
}
|
|
my $errstr;
|
|
eval { $dom=$hypconn->create_domain($xml); };
|
|
if ($@) { $errstr = $@; }
|
|
if (ref $errstr) {
|
|
$errstr = ":".$errstr->{message};
|
|
}
|
|
if ($errstr) { return (undef,$errstr); }
|
|
if ($dom) {
|
|
refresh_vm($dom);
|
|
}
|
|
return $dom,undef;
|
|
}
|
|
|
|
sub createstorage {
|
|
#svn rev 6638 held the older vintage of createstorage
|
|
my $filename=shift;
|
|
my $mastername=shift;
|
|
my $size=shift;
|
|
my $cfginfo = shift;
|
|
my $force = shift;
|
|
#my $diskstruct = shift;
|
|
my $node = $cfginfo->{node};
|
|
my @flags = split /,/,$cfginfo->{virtflags};
|
|
foreach (@flags) {
|
|
if (/^imageformat=(.*)\z/) {
|
|
$imgfmt=$1;
|
|
} elsif (/^clonemethod=(.*)\z/) {
|
|
$clonemethod=$1;
|
|
}
|
|
}
|
|
my $mountpath;
|
|
my $pathappend;
|
|
|
|
|
|
#for nfs paths and qemu-img, we do the magic locally only for now
|
|
my $basename;
|
|
my $dirname;
|
|
if ($mastername and $size) {
|
|
return 1,"Can not specify both a master to clone and size(s)";
|
|
}
|
|
$filename=~s/=(.*)//;
|
|
my $model=$1;
|
|
my $prefix='hd';
|
|
if ($model eq 'scsi') {
|
|
$prefix='sd';
|
|
} elsif ($model eq 'virtio') {
|
|
$prefix='vd';
|
|
}
|
|
my @suffixes=('a','b','d'..'z');
|
|
if ($filename =~ /^nfs:/) { #libvirt storage pool to be used for this
|
|
my @sizes = split /,/,$size;
|
|
foreach (@sizes) {
|
|
get_filepath_by_url(url=>$filename,dev=>$prefix.shift(@suffixes),create=>$_);
|
|
}
|
|
}
|
|
my $masterserver;
|
|
if ($mastername) { #cloning
|
|
}
|
|
if ($size) {#new volume
|
|
}
|
|
}
|
|
|
|
|
|
|
|
sub chvm {
|
|
shift;
|
|
my @addsizes;
|
|
my %resize;
|
|
my $cpucount;
|
|
my @purge;
|
|
my @derefdisks;
|
|
my $memory;
|
|
@ARGV=@_;
|
|
require Getopt::Long;
|
|
GetOptions(
|
|
"a=s"=>\@addsizes,
|
|
"d=s"=>\@derefdisks,
|
|
"mem=s"=>\$memory,
|
|
"p=s"=>\@purge,
|
|
"resize=s%" => \%resize,
|
|
"cpu=s" => \$cpucount,
|
|
);
|
|
my %useddisks;
|
|
if (defined $confdata->{vm}->{$node}->[0]->{storage}) {
|
|
my $store;
|
|
foreach $store (split /\|/, $confdata->{vm}->{$node}->[0]->{storage}) {
|
|
$store =~ s/,.*//;
|
|
$store =~ s/=.*//;
|
|
if ($store =~ /^nfs:\/\//) {
|
|
my %disks = %{get_multiple_paths_by_url(url=>$store,node=>$node)};
|
|
foreach (keys %disks) {
|
|
$useddisks{$disks{$_}->{device}}=1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (@addsizes) { #need to add disks, first identify used devnames
|
|
my @diskstoadd;
|
|
my $location = $confdata->{vm}->{$node}->[0]->{storage};
|
|
$location =~ s/.*\|//; #use the rightmost location for making new devices
|
|
$location =~ s/,.*//; #no comma specified parameters are valid
|
|
$location =~ s/=(.*)//; #store model if specified here
|
|
my $model = $1;
|
|
my $prefix='hd';
|
|
if ($model eq 'scsi') {
|
|
$prefix='sd';
|
|
} elsif ($model eq 'virtio') {
|
|
$prefix='vd';
|
|
}
|
|
my @suffixes;
|
|
if ($prefix eq 'hd') {
|
|
@suffixes=('a','b','d'..'z');
|
|
} else {
|
|
@suffixes=('a'..'z');
|
|
}
|
|
my @newsizes;
|
|
foreach (@addsizes) {
|
|
push @newsizes,split /,/,$_;
|
|
}
|
|
foreach (@newsizes) {
|
|
my $dev;
|
|
do {
|
|
$dev = $prefix.shift(@suffixes);
|
|
} while ($useddisks{$dev});
|
|
#ok, now I need a volume created to attach
|
|
push @diskstoadd,get_filepath_by_url(url=>$location,dev=>$dev,create=>$_);
|
|
}
|
|
#now that the volumes are made, must build xml for each and attempt attach if and only if the VM is live
|
|
my $dom = $hypconn->get_domain_by_name($node);
|
|
my $currstate=getpowstate($dom);
|
|
if ($currstate eq 'on') { #attempt live attach
|
|
foreach (@diskstoadd) {
|
|
my $suffix;
|
|
my $format;
|
|
if (/^[^\.]*\.([^\.]*)\.([^\.]*)/) {
|
|
$suffix=$1;
|
|
$format=$2;
|
|
} elsif (/^[^\.]*\.([^\.]*)/) {
|
|
$suffix=$1;
|
|
$format='raw';
|
|
}
|
|
my $bus;
|
|
if ($suffix =~ /^sd/) {
|
|
$bus='scsi';
|
|
} elsif ($suffix =~ /^hd/) {
|
|
sendmsg("Reboot required to add IDE drives",$node);
|
|
next;
|
|
} elsif ($suffix =~ /vd/) {
|
|
$bus='virtio';
|
|
}
|
|
my $xml = "<disk type='file' device='disk'><driver name='qemu' type='$format'/><source file='$_'/><target dev='$suffix' bus='$bus'/></disk>";
|
|
$dom->attach_device($xml);
|
|
}
|
|
my $newxml=$dom->get_xml_description();
|
|
$updatetable->{kvm_nodedata}->{$node}={xml=>$newxml};
|
|
} else { #TODO: chvm to modify offline xml structure
|
|
}
|
|
} elsif (@purge) {
|
|
my $dom = $hypconn->get_domain_by_name($node);
|
|
my $vmxml=$dom->get_xml_description();
|
|
my $currstate=getpowstate($dom);
|
|
foreach (get_disks_by_userspecs(\@purge,$vmxml)) {
|
|
my $devxml=$_->[0];
|
|
my $file=$_->[1];
|
|
$file =~ m!/([^/]*)/($node\..*)\z!;
|
|
my $pooluuid=$1;
|
|
my $volname=$2;
|
|
#first, detach the device.
|
|
eval {
|
|
if ($currstate eq 'on') {
|
|
$dom->detach_device($devxml);
|
|
my $newxml=$dom->get_xml_description();
|
|
$updatetable->{kvm_nodedata}->{$node}={xml=>$newxml};
|
|
} else {
|
|
#TODO: manipulate offline xml data
|
|
}
|
|
};
|
|
if ($@) {
|
|
sendmsg([1,"Unable to remove device"],$node);
|
|
} else {
|
|
#if that worked, remove the disk..
|
|
my $pool = $hypconn->get_storage_pool_by_uuid($pooluuid);
|
|
if ($pool) {
|
|
$pool->refresh(); #Amazingly, libvirt maintains a cached view of the volume rather than scan on demand
|
|
my $vol = $pool->get_volume_by_name($volname);
|
|
if ($vol) {
|
|
$vol->delete();
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
}
|
|
sub get_disks_by_userspecs {
|
|
my $specs = shift;
|
|
my $xml = shift;
|
|
my $struct = XMLin($xml);
|
|
my @returnxmls;
|
|
foreach my $spec (@$specs) {
|
|
foreach (@{$struct->{devices}->{disk}}) {
|
|
if ($spec =~ /^.d./) { #vda, hdb, sdc, etc, match be equality to target->{dev}
|
|
if ($_->{target}->{dev} eq $spec) {
|
|
push @returnxmls,[XMLout($_,RootName=>'disk'),$_->{source}->{file}];
|
|
}
|
|
} elsif ($spec =~ /^d(.*)/) { #delete by scsi unit number..
|
|
if ($_->{address}->{unit} == $1) {
|
|
push @returnxmls,[XMLout($_,RootName=>"disk"),$_->{source}->{file}];
|
|
}
|
|
} #other formats TBD
|
|
}
|
|
}
|
|
return @returnxmls;
|
|
}
|
|
|
|
sub mkvm {
|
|
shift; #Throuw away first argument
|
|
@ARGV=@_;
|
|
my $disksize;
|
|
my $mastername;
|
|
my $force=0;
|
|
require Getopt::Long;
|
|
GetOptions(
|
|
'master|m=s'=>\$mastername,
|
|
'size|s=s'=>\$disksize,
|
|
'force|f'=>\$force
|
|
);
|
|
if (defined $confdata->{vm}->{$node}->[0]->{storage}) {
|
|
my $diskname=$confdata->{vm}->{$node}->[0]->{storage};
|
|
if ($diskname =~ /^phy:/) { #in this case, mkvm should have no argumens
|
|
if ($mastername or $disksize) {
|
|
return 1,"mkvm management of block device storage not implemented";
|
|
}
|
|
}
|
|
if ($mastername or $disksize) {
|
|
return createstorage($diskname,$mastername,$disksize,$confdata->{vm}->{$node}->[0],$force);
|
|
}
|
|
} else {
|
|
if ($mastername or $disksize) {
|
|
return 1,"Requested initialization of storage, but vm.storage has no value for node";
|
|
}
|
|
}
|
|
}
|
|
sub power {
|
|
@ARGV=@_;
|
|
require Getopt::Long;
|
|
my $cdloc;
|
|
GetOptions('cdrom|iso|c|i=s'=>\$cdloc);
|
|
my $subcommand = shift @ARGV;
|
|
my $retstring;
|
|
my $dom;
|
|
eval {
|
|
$dom = $hypconn->get_domain_by_name($node);
|
|
};
|
|
if ($subcommand eq "boot") {
|
|
my $currstate=getpowstate($dom);
|
|
$retstring=$currstate." ";
|
|
if ($currstate eq "off") {
|
|
$subcommand="on";
|
|
} elsif ($currstate eq "on") {
|
|
$subcommand="reset";
|
|
}
|
|
}
|
|
my $errstr;
|
|
if ($subcommand eq 'on') {
|
|
unless ($dom) {
|
|
if ($use_xhrm) {
|
|
if (xhrm_satisfy($node,$hyp)) {
|
|
return (1,"Failure satisfying networking and storage requirements on $hyp for $node");
|
|
}
|
|
}
|
|
($dom,$errstr) = makedom($node,$cdloc);
|
|
if ($errstr) { return (1,$errstr); }
|
|
} else {
|
|
$retstring .= "$status_noop";
|
|
}
|
|
} elsif ($subcommand eq 'off') {
|
|
if ($dom) {
|
|
my $newxml=$dom->get_xml_description();
|
|
$updatetable->{kvm_nodedata}->{$node}={xml=>$newxml};
|
|
$dom->destroy();
|
|
undef $dom;
|
|
} else { $retstring .= "$status_noop"; }
|
|
} elsif ($subcommand eq 'softoff') {
|
|
if ($dom) {
|
|
my $newxml=$dom->get_xml_description();
|
|
$updatetable->{kvm_nodedata}->{$node}={xml=>$newxml};
|
|
$dom->shutdown();
|
|
} else { $retstring .= "$status_noop"; }
|
|
} elsif ($subcommand eq 'reset') {
|
|
if ($dom) {
|
|
my $newxml=$dom->get_xml_description();
|
|
$updatetable->{kvm_nodedata}->{$node}={xml=>$newxml};
|
|
$dom->destroy();
|
|
undef $dom;
|
|
if ($use_xhrm) {
|
|
xhrm_satisfy($node,$hyp);
|
|
}
|
|
($dom,$errstr) = makedom($node,$cdloc,$newxml);
|
|
if ($errstr) { return (1,$errstr); }
|
|
$retstring.="reset";
|
|
} else { $retstring .= "$status_noop"; }
|
|
} else {
|
|
unless ($subcommand =~ /^stat/) {
|
|
return (1,"Unsupported power directive '$subcommand'");
|
|
}
|
|
}
|
|
|
|
unless ($retstring =~ /reset/) {
|
|
$retstring=$retstring.getpowstate($dom);
|
|
}
|
|
return (0,$retstring);
|
|
}
|
|
|
|
sub lsvm {
|
|
my $node = shift;
|
|
my @doms = $hypconn->list_domains();
|
|
my @vms;
|
|
foreach (@doms) {
|
|
push @vms,$_->get_name();
|
|
}
|
|
return (0,@vms);
|
|
}
|
|
|
|
|
|
sub guestcmd {
|
|
$hyp = shift;
|
|
$node = shift;
|
|
my $command = shift;
|
|
my @args = @_;
|
|
my $error;
|
|
if ($command eq "rpower") {
|
|
return power(@args);
|
|
} elsif ($command eq "mkvm") {
|
|
return mkvm($node,@args);
|
|
} elsif ($command eq "chvm") {
|
|
return chvm($node,@args);
|
|
} elsif ($command eq "rmigrate") {
|
|
return migrate($node,@args);
|
|
} elsif ($command eq "getrvidparms") {
|
|
return getrvidparms($node,@args);
|
|
} elsif ($command eq "getcons") {
|
|
return getcons($node,@args);
|
|
} elsif ($command eq "lsvm") {
|
|
return lsvm($node,@args);
|
|
}
|
|
=cut
|
|
} elsif ($command eq "rvitals") {
|
|
return vitals(@args);
|
|
} elsif ($command =~ /r[ms]preset/) {
|
|
return resetmp(@args);
|
|
} elsif ($command eq "rspconfig") {
|
|
return mpaconfig($mpa,$user,$pass,$node,$slot,@args);
|
|
} elsif ($command eq "rbootseq") {
|
|
return bootseq(@args);
|
|
} elsif ($command eq "switchblade") {
|
|
return switchblade(@args);
|
|
} elsif ($command eq "getmacs") {
|
|
return getmacs(@args);
|
|
} elsif ($command eq "rinv") {
|
|
return inv(@args);
|
|
} elsif ($command eq "reventlog") {
|
|
return eventlog(@args);
|
|
} elsif ($command eq "rscan") {
|
|
return rscan(\@args);
|
|
}
|
|
|
|
=cut
|
|
return (1,"$command not a supported command by kvm method");
|
|
}
|
|
|
|
sub preprocess_request {
|
|
my $request = shift;
|
|
if ($request->{_xcatpreprocessed}->[0] == 1) { return [$request]; }
|
|
my $callback=shift;
|
|
my @requests;
|
|
|
|
my $noderange = $request->{node}; #Should be arrayref
|
|
my $command = $request->{command}->[0];
|
|
my $extrargs = $request->{arg};
|
|
my @exargs=($request->{arg});
|
|
if (ref($extrargs)) {
|
|
@exargs=@$extrargs;
|
|
}
|
|
|
|
my $usage_string=xCAT::Usage->parseCommand($command, @exargs);
|
|
if ($usage_string) {
|
|
$callback->({data=>$usage_string});
|
|
$request = {};
|
|
return;
|
|
}
|
|
|
|
if (!$noderange) {
|
|
$usage_string=xCAT::Usage->getUsage($command);
|
|
$callback->({data=>$usage_string});
|
|
$request = {};
|
|
return;
|
|
}
|
|
|
|
#print "noderange=@$noderange\n";
|
|
|
|
# find service nodes for requested nodes
|
|
# build an individual request for each service node
|
|
my $service = "xcat";
|
|
my $sn = xCAT::Utils->get_ServiceNode($noderange, $service, "MN");
|
|
|
|
# build each request for each service node
|
|
|
|
foreach my $snkey (keys %$sn)
|
|
{
|
|
#print "snkey=$snkey\n";
|
|
my $reqcopy = {%$request};
|
|
$reqcopy->{node} = $sn->{$snkey};
|
|
$reqcopy->{'_xcatdest'} = $snkey;
|
|
$reqcopy->{_xcatpreprocessed}->[0] = 1;
|
|
push @requests, $reqcopy;
|
|
}
|
|
return \@requests;
|
|
}
|
|
|
|
|
|
sub adopt {
|
|
my $orphash = shift;
|
|
my $hyphash = shift;
|
|
my %addmemory = ();
|
|
my $node;
|
|
my $target;
|
|
my $vmupdates;
|
|
foreach $node (keys %{$orphash}) {
|
|
$target=pick_target($node,\%addmemory);
|
|
unless ($target) {
|
|
next;
|
|
}
|
|
if ($confdata->{vm}->{$node}->[0]->{memory}) {
|
|
$addmemory{$target}+=getUnits($confdata->{vm}->{$node}->[0]->{memory},"M",1024);
|
|
} else {
|
|
$addmemory{$target}+=getUnits("512","M",1024);
|
|
}
|
|
$hyphash{$target}->{nodes}->{$node}=1;
|
|
delete $orphash->{$node};
|
|
$vmupdates->{$node}->{host}=$target;
|
|
}
|
|
$vmtab->setNodesAttribs($vmupdates);
|
|
if (keys %{$orphash}) {
|
|
return 0;
|
|
} else {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
sub process_request {
|
|
$SIG{INT} = $SIG{TERM} = sub {
|
|
foreach (keys %vm_comm_pids) {
|
|
kill 2, $_;
|
|
}
|
|
exit 0;
|
|
};
|
|
%offlinehyps=();
|
|
%hypstats=();
|
|
%offlinevms=();
|
|
my $request = shift;
|
|
my $callback = shift;
|
|
unless ($libvirtsupport) {
|
|
$libvirtsupport = eval {
|
|
require Sys::Virt;
|
|
if (Sys::Virt->VERSION < "0.2.0") {
|
|
die;
|
|
}
|
|
1;
|
|
};
|
|
}
|
|
unless ($libvirtsupport) { #Still no Sys::Virt module
|
|
$callback->({error=>"Sys::Virt perl module missing or older than 0.2.0, unable to fulfill KVM plugin requirements",errorcode=>[42]});
|
|
return [];
|
|
}
|
|
require Sys::Virt::Domain;
|
|
%runningstates = (&Sys::Virt::Domain::STATE_NOSTATE=>1,&Sys::Virt::Domain::STATE_RUNNING=>1,&Sys::Virt::Domain::STATE_BLOCKED=>1);
|
|
|
|
$doreq = shift;
|
|
my $level = shift;
|
|
my $noderange = $request->{node};
|
|
my $command = $request->{command}->[0];
|
|
my @exargs;
|
|
unless ($command) {
|
|
return; #Empty request
|
|
}
|
|
if (ref($request->{arg})) {
|
|
@exargs = @{$request->{arg}};
|
|
} else {
|
|
@exargs = ($request->{arg});
|
|
}
|
|
my $forcemode = 0;
|
|
my %orphans=();
|
|
if ($command eq 'vmstatenotify') {
|
|
unless ($vmtab) { $vmtab = new xCAT::Table('vm',-create=>1); }
|
|
my $state = $exargs[0];
|
|
if ($state eq 'vmoff') {
|
|
$vmtab->setNodeAttribs($exargs[1],{powerstate=>'off'});
|
|
return;
|
|
} elsif ($state eq 'vmon') {
|
|
$vmtab->setNodeAttribs($exargs[1],{powerstate=>'on'});
|
|
return;
|
|
} elsif ($state eq 'hypshutdown') { #turn this into an evacuate
|
|
my $nodelisttab = xCAT::Table->new('nodelist');
|
|
my $appstatus = $nodelisttab->getNodeAttribs($noderange->[0],['appstatus']);
|
|
my @apps =split /,/,$appstatus->{'appstatus'};
|
|
my @newapps;
|
|
foreach (@apps) {
|
|
if ($_ eq 'virtualization') { next; }
|
|
push @newapps,$_;
|
|
}
|
|
$nodelisttab->setNodeAttribs($noderange->[0],{appstatus=>join(',',@newapps)});
|
|
$command="revacuate";
|
|
@exargs=();
|
|
} elsif ($state eq 'hypstartup') { #if starting up, check for nodes on this hypervisor and start them up
|
|
my $nodelisttab = xCAT::Table->new('nodelist');
|
|
my $appstatus = $nodelisttab->getNodeAttribs($noderange->[0],['appstatus']);
|
|
my @apps =split /,/,$appstatus->{appstatus};
|
|
unless (grep {$_ eq 'virtualization'} @apps) {
|
|
push @apps,'virtualization';
|
|
$nodelisttab->setNodeAttribs($noderange->[0],{appstatus=>join(',',@apps)});
|
|
}
|
|
my @tents = $vmtab->getAttribs({host=>$noderange->[0],power=>'on'},['node']);
|
|
$noderange=[];
|
|
foreach (@tents) {
|
|
push @$noderange,noderange($_->{node});
|
|
}
|
|
$command="rpower";
|
|
@exargs=("on");
|
|
}
|
|
|
|
}
|
|
if ($command eq 'revacuate') {
|
|
my $newnoderange;
|
|
if (grep { $_ eq '-f' } @exargs) {
|
|
$forcemode=1;
|
|
}
|
|
foreach (@$noderange) {
|
|
my $hyp = $_; #I used $_ too much here... sorry
|
|
$hypconn=undef;
|
|
push @destblacklist,$_;
|
|
if ((not $offlinehyps{$_}) and nodesockopen($_,22)) {
|
|
eval { #Contain bugs that won't be in $@
|
|
$hypconn= Sys::Virt->new(uri=>"qemu+ssh://root@".$_."/system?no_tty=1&netcat=nc");
|
|
};
|
|
unless ($hypconn) { #retry for socat
|
|
eval { #Contain bugs that won't be in $@
|
|
$hypconn= Sys::Virt->new(uri=>"qemu+ssh://root@".$_."/system?no_tty=1");
|
|
};
|
|
}
|
|
}
|
|
unless ($hypconn) {
|
|
$offlinehyps{$hyp}=1;
|
|
if ($forcemode) { #forcemode indicates the hypervisor is probably already dead, and to clear vm.host of all the nodes, and adopt the ones that are supposed to be 'on', power them on
|
|
unless ($vmtab) { $vmtab = new xCAT::Table('vm',-create=>0); }
|
|
unless ($vmtab) { next; }
|
|
my @vents = $vmtab->getAttribs({host=>$hyp},['node','powerstate']);
|
|
my $vent;
|
|
my $nodestozap;
|
|
foreach $vent (@vents) {
|
|
my @nodes = noderange($vent->{node});
|
|
if ($vent->{powerstate} eq 'on') {
|
|
foreach (@nodes) {
|
|
$offlinevms{$_}=1;
|
|
$orphans{$_}=1;
|
|
push @$newnoderange,$_;
|
|
}
|
|
}
|
|
push @$nodestozap,@nodes;
|
|
}
|
|
$vmtab->setNodesAttribs($nodestozap,{host=>'|^.*$||'});
|
|
} else {
|
|
$callback->({node=>[{name=>[$_],error=>["Cannot communicate via libvirt to node"]}]});
|
|
}
|
|
next;
|
|
}
|
|
if ($hypconn) {
|
|
foreach ($hypconn->list_domains()) {
|
|
my $guestname = $_->get_name();
|
|
if ($guestname eq 'Domain-0') {
|
|
next;
|
|
}
|
|
push @$newnoderange,$guestname;
|
|
}
|
|
}
|
|
}
|
|
$hypconn=undef;
|
|
$noderange = $newnoderange;
|
|
$command = 'rmigrate';
|
|
}
|
|
|
|
my $sitetab = xCAT::Table->new('site');
|
|
if ($sitetab) {
|
|
my $xhent = $sitetab->getAttribs({key=>'usexhrm'},['value']);
|
|
if ($xhent and $xhent->{value} and $xhent->{value} !~ /no/i and $xhent->{value} !~ /disable/i) {
|
|
$use_xhrm=1;
|
|
}
|
|
}
|
|
$vmtab = xCAT::Table->new("vm");
|
|
$confdata={};
|
|
xCAT::VMCommon::grab_table_data($noderange,$confdata,$callback);
|
|
$kvmdatatab = xCAT::Table->new("kvm_nodedata",-create=>0); #grab any pertinent pre-existing xml
|
|
if ($kvmdatatab) {
|
|
$confdata->{kvmnodedata} = $kvmdatatab->getNodesAttribs($noderange,[qw/xml/]);
|
|
} else {
|
|
$confdata->{kvmnodedata} = {};
|
|
}
|
|
if ($command eq 'mkvm' or $command eq 'rpower' and (grep { "$_" eq "on" or $_ eq "boot" or $_ eq "reset" } @exargs)) {
|
|
xCAT::VMCommon::requestMacAddresses($confdata,$noderange);
|
|
my @dhcpnodes;
|
|
foreach (keys %{$confdata->{dhcpneeded}}) {
|
|
push @dhcpnodes,$_;
|
|
delete $confdata->{dhcpneeded}->{$_};
|
|
}
|
|
$doreq->({command=>['makedhcp'],node=>\@dhcpnodes});
|
|
}
|
|
|
|
if ($command eq 'revacuate' or $command eq 'rmigrate') {
|
|
$vmmaxp=1; #for now throttle concurrent migrations, requires more sophisticated heuristics to ensure sanity
|
|
} else {
|
|
my $tmp;
|
|
if ($sitetab) {
|
|
($tmp)=$sitetab->getAttribs({'key'=>'vmmaxp'},'value');
|
|
if (defined($tmp)) { $vmmaxp=$tmp->{value}; }
|
|
}
|
|
}
|
|
|
|
my $children = 0;
|
|
$SIG{CHLD} = sub { my $cpid; while (($cpid = waitpid(-1, WNOHANG)) > 0) { if ($vm_comm_pids{$cpid}) { delete $vm_comm_pids{$cpid}; $children--; } } };
|
|
my $inputs = new IO::Select;;
|
|
my $sub_fds = new IO::Select;
|
|
%hyphash=();
|
|
if ($command eq 'lsvm') { #command intended for hypervisors, not guests
|
|
foreach(@$noderange) { $hyphash{$_}->{nodes}->{$_}=1; }
|
|
} else {
|
|
foreach (keys %{$confdata->{vm}}) {
|
|
if ($confdata->{vm}->{$_}->[0]->{host}) {
|
|
$hyphash{$confdata->{vm}->{$_}->[0]->{host}}->{nodes}->{$_}=1;
|
|
} else {
|
|
$orphans{$_}=1;
|
|
}
|
|
}
|
|
}
|
|
if (keys %orphans) {
|
|
if ($command eq "rpower") {
|
|
if (grep /^on$/,@exargs or grep /^boot$/,@exargs) {
|
|
unless (adopt(\%orphans,\%hyphash)) {
|
|
$callback->({error=>"Can't find ".join(",",keys %orphans),errorcode=>[1]});
|
|
return 1;
|
|
}
|
|
} else {
|
|
foreach (keys %orphans) {
|
|
$callback->({node=>[{name=>[$_],data=>[{contents=>['off']}]}]});
|
|
}
|
|
}
|
|
} elsif ($command eq "rmigrate") {
|
|
if ($forcemode) {
|
|
unless (adopt(\%orphans,\%hyphash)) {
|
|
$callback->({error=>"Can't find ".join(",",keys %orphans),errorcode=>[1]});
|
|
return 1;
|
|
}
|
|
} else {
|
|
$callback->({error=>"Can't find ".join(",",keys %orphans),errorcode=>[1]});
|
|
return;
|
|
}
|
|
} elsif ($command eq "mkvm") { #must adopt to create
|
|
unless (adopt(\%orphans,\%hyphash)) {
|
|
$callback->({error=>"Can't find ".join(",",keys %orphans),errorcode=>[1]});
|
|
return 1;
|
|
}
|
|
#mkvm used to be able to happen devoid of any hypervisor, make a fake hypervisor entry to allow this to occur
|
|
#commenting that out for now
|
|
# foreach (keys %orphans) {
|
|
# $hyphash{'!@!XCATDUMMYHYPERVISOR!@!'}->{nodes}->{$_}=1;
|
|
# }
|
|
} else {
|
|
$callback->({error=>"Can't find ".join(",",keys %orphans),errorcode=>[1]});
|
|
return;
|
|
}
|
|
}
|
|
if ($command eq "rbeacon") {
|
|
my %req=();
|
|
$req{command}=['rbeacon'];
|
|
$req{arg}=\@exargs;
|
|
$req{node}=[keys %hyphash];
|
|
$doreq->(\%req,$callback);
|
|
return;
|
|
}
|
|
|
|
#get new node status
|
|
my %oldnodestatus=(); #saves the old node status
|
|
my @allerrornodes=();
|
|
my $check=0;
|
|
my $global_check=1;
|
|
if ($sitetab) {
|
|
(my $ref) = $sitetab->getAttribs({key => 'nodestatus'}, 'value');
|
|
if ($ref) {
|
|
if ($ref->{value} =~ /0|n|N/) { $global_check=0; }
|
|
}
|
|
}
|
|
|
|
|
|
if ($command eq 'rpower') {
|
|
my $subcommand=$exargs[0];
|
|
if (($global_check) && ($subcommand ne 'stat') && ($subcommand ne 'status')) {
|
|
$check=1;
|
|
my @allnodes=@$noderange;
|
|
|
|
#save the old status
|
|
my $nodelisttab = xCAT::Table->new('nodelist');
|
|
if ($nodelisttab) {
|
|
my $tabdata = $nodelisttab->getNodesAttribs(\@allnodes, ['node', 'status']);
|
|
foreach my $node (@allnodes)
|
|
{
|
|
my $tmp1 = $tabdata->{$node}->[0];
|
|
if ($tmp1) {
|
|
if ($tmp1->{status}) { $oldnodestatus{$node}=$tmp1->{status}; }
|
|
else { $oldnodestatus{$node}=""; }
|
|
}
|
|
}
|
|
}
|
|
#print "oldstatus:" . Dumper(\%oldnodestatus);
|
|
|
|
#set the new status to the nodelist.status
|
|
my %newnodestatus=();
|
|
my $newstat;
|
|
if (($subcommand eq 'off') || ($subcommand eq 'softoff')) {
|
|
my $newstat=$::STATUS_POWERING_OFF;
|
|
$newnodestatus{$newstat}=\@allnodes;
|
|
} else {
|
|
#get the current nodeset stat
|
|
if (@allnodes>0) {
|
|
my $nsh={};
|
|
my ($ret, $msg)=xCAT::SvrUtils->getNodesetStates(\@allnodes, $nsh);
|
|
if (!$ret) {
|
|
foreach (keys %$nsh) {
|
|
my $newstat=xCAT_monitoring::monitorctrl->getNodeStatusFromNodesetState($_, "rpower");
|
|
$newnodestatus{$newstat}=$nsh->{$_};
|
|
}
|
|
} else {
|
|
$callback->({data=>$msg});
|
|
}
|
|
}
|
|
}
|
|
#print "newstatus" . Dumper(\%newnodestatus);
|
|
xCAT_monitoring::monitorctrl::setNodeStatusAttributes(\%newnodestatus, 1);
|
|
}
|
|
}
|
|
|
|
my $sent = $sitetab->getAttribs({key=>'masterimgdir'},'value');
|
|
if ($sent) {
|
|
$xCAT_plugin::kvm::masterdir=$sent->{value};
|
|
}
|
|
|
|
|
|
|
|
foreach $hyp (sort (keys %hyphash)) {
|
|
while ($children > $vmmaxp) {
|
|
my $handlednodes={};
|
|
forward_data($callback,$sub_fds,$handlednodes);
|
|
#update the node status to the nodelist.status table
|
|
if ($check) {
|
|
updateNodeStatus($handlednodes, \@allerrornodes);
|
|
}
|
|
}
|
|
$children++;
|
|
my $cfd;
|
|
my $pfd;
|
|
socketpair($pfd, $cfd,AF_UNIX,SOCK_STREAM,PF_UNSPEC) or die "socketpair: $!";
|
|
$cfd->autoflush(1);
|
|
$pfd->autoflush(1);
|
|
my $cpid = xCAT::Utils->xfork;
|
|
unless (defined($cpid)) { die "Fork error"; }
|
|
unless ($cpid) {
|
|
close($cfd);
|
|
dohyp($pfd,$hyp,$command,-args=>\@exargs);
|
|
exit(0);
|
|
}
|
|
$vm_comm_pids{$cpid} = 1;
|
|
close ($pfd);
|
|
$sub_fds->add($cfd);
|
|
}
|
|
while ($sub_fds->count > 0 or $children > 0) {
|
|
my $handlednodes={};
|
|
forward_data($callback,$sub_fds,$handlednodes);
|
|
#update the node status to the nodelist.status table
|
|
if ($check) {
|
|
updateNodeStatus($handlednodes, \@allerrornodes);
|
|
}
|
|
}
|
|
|
|
#Make sure they get drained, this probably is overkill but shouldn't hurt
|
|
my $rc=1;
|
|
while ( $rc>0 ) {
|
|
my $handlednodes={};
|
|
$rc=forward_data($callback,$sub_fds,$handlednodes);
|
|
#update the node status to the nodelist.status table
|
|
if ($check) {
|
|
updateNodeStatus($handlednodes, \@allerrornodes);
|
|
}
|
|
}
|
|
|
|
if ($check) {
|
|
#print "allerrornodes=@allerrornodes\n";
|
|
#revert the status back for there is no-op for the nodes
|
|
my %old=();
|
|
foreach my $node (@allerrornodes) {
|
|
my $stat=$oldnodestatus{$node};
|
|
if (exists($old{$stat})) {
|
|
my $pa=$old{$stat};
|
|
push(@$pa, $node);
|
|
}
|
|
else {
|
|
$old{$stat}=[$node];
|
|
}
|
|
}
|
|
xCAT_monitoring::monitorctrl::setNodeStatusAttributes(\%old, 1);
|
|
}
|
|
}
|
|
|
|
sub updateNodeStatus {
|
|
my $handlednodes=shift;
|
|
my $allerrornodes=shift;
|
|
foreach my $node (keys(%$handlednodes)) {
|
|
if ($handlednodes->{$node} == -1) { push(@$allerrornodes, $node); }
|
|
}
|
|
}
|
|
|
|
sub forward_data {
|
|
my $callback = shift;
|
|
my $fds = shift;
|
|
my $errornodes=shift;
|
|
my @ready_fds = $fds->can_read(1);
|
|
my $rfh;
|
|
my $rc = @ready_fds;
|
|
foreach $rfh (@ready_fds) {
|
|
my $data;
|
|
if ($data = <$rfh>) {
|
|
while ($data !~ /ENDOFFREEZE6sK4ci/) {
|
|
$data .= <$rfh>;
|
|
}
|
|
eval { print $rfh "ACK\n"; }; #ignore failures to send inter-process ack
|
|
my $responses=thaw($data);
|
|
foreach (@$responses) {
|
|
#save the nodes that has errors and the ones that has no-op for use by the node status monitoring
|
|
my $no_op=0;
|
|
if ($_->{node}->[0]->{errorcode}) { $no_op=1; }
|
|
else {
|
|
my $text=$_->{node}->[0]->{data}->[0]->{contents}->[0];
|
|
#print "data:$text\n";
|
|
if (($text) && ($text =~ /$status_noop/)) {
|
|
$no_op=1;
|
|
#remove the symbols that meant for use by node status
|
|
$_->{node}->[0]->{data}->[0]->{contents}->[0] =~ s/$status_noop//;
|
|
}
|
|
}
|
|
#print "data:". $_->{node}->[0]->{data}->[0]->{contents}->[0] . "\n";
|
|
if ($no_op) {
|
|
if ($errornodes) { $errornodes->{$_->{node}->[0]->{name}->[0]}=-1; }
|
|
} else {
|
|
if ($errornodes) { $errornodes->{$_->{node}->[0]->{name}->[0]}=1; }
|
|
}
|
|
$callback->($_);
|
|
}
|
|
} else {
|
|
$fds->remove($rfh);
|
|
close($rfh);
|
|
}
|
|
}
|
|
yield(); #Try to avoid useless iterations as much as possible
|
|
return $rc;
|
|
}
|
|
|
|
|
|
sub dohyp {
|
|
my $out = shift;
|
|
$hyp = shift;
|
|
my $command=shift;
|
|
my %namedargs=@_;
|
|
my @exargs=@{$namedargs{-args}};
|
|
my $node;
|
|
my $args = \@exargs;
|
|
$vmtab = xCAT::Table->new("vm");
|
|
unless ($offlinehyps{$hyp} or ($hyp eq '!@!XCATDUMMYHYPERVISOR!@!') or nodesockopen($hyp,22)) {
|
|
$offlinehyps{$hyp}=1;
|
|
}
|
|
|
|
|
|
eval { #Contain Sys::Virt bugs that make $@ useless
|
|
if ($hyp eq '!@!XCATDUMMYHYPERVISOR!@!') { #Fake connection for commands that have a fake hypervisor key
|
|
$hypconn = 1;
|
|
} elsif (not $offlinehyps{$hyp}) {
|
|
$hypconn= Sys::Virt->new(uri=>"qemu+ssh://root@".$hyp."/system?no_tty=1&netcat=nc");
|
|
}
|
|
};
|
|
unless ($hypconn or $offlinehyps{$hyp}) {
|
|
eval { #Contain Sys::Virt bugs that make $@ useless
|
|
$hypconn= Sys::Virt->new(uri=>"qemu+ssh://root@".$hyp."/system?no_tty=1");
|
|
};
|
|
}
|
|
unless ($hypconn) {
|
|
my %err=(node=>[]);
|
|
foreach (keys %{$hyphash{$hyp}->{nodes}}) {
|
|
push (@{$err{node}},{name=>[$_],error=>["Cannot communicate via libvirt to $hyp"],errorcode=>[1]});
|
|
}
|
|
print $out freeze([\%err]);
|
|
print $out "\nENDOFFREEZE6sK4ci\n";
|
|
yield();
|
|
waitforack($out);
|
|
return 1,"General error establishing libvirt communication";
|
|
}
|
|
foreach $node (sort (keys %{$hyphash{$hyp}->{nodes}})) {
|
|
my ($rc,@output) = guestcmd($hyp,$node,$command,@$args);
|
|
|
|
foreach(@output) {
|
|
my %output;
|
|
if (ref($_)) {
|
|
print $out freeze([$_]);
|
|
print $out "\nENDOFFREEZE6sK4ci\n";
|
|
yield();
|
|
waitforack($out);
|
|
next;
|
|
}
|
|
|
|
(my $desc,my $text) = split (/:/,$_,2);
|
|
unless ($text) {
|
|
$text=$desc;
|
|
} else {
|
|
$desc =~ s/^\s+//;
|
|
$desc =~ s/\s+$//;
|
|
if ($desc) {
|
|
$output{node}->[0]->{data}->[0]->{desc}->[0]=$desc;
|
|
}
|
|
}
|
|
$text =~ s/^\s+//;
|
|
$text =~ s/\s+$//;
|
|
$output{node}->[0]->{errorcode} = $rc;
|
|
$output{node}->[0]->{name}->[0]=$node;
|
|
$output{node}->[0]->{data}->[0]->{contents}->[0]=$text;
|
|
$output{node}->[0]->{error} = $text unless $rc == 0;
|
|
print $out freeze([\%output]);
|
|
print $out "\nENDOFFREEZE6sK4ci\n";
|
|
yield();
|
|
waitforack($out);
|
|
}
|
|
yield();
|
|
}
|
|
foreach (keys %$updatetable) {
|
|
my $tabhandle = xCAT::Table->new($_,-create=>1);
|
|
$tabhandle->setNodesAttribs($updatetable->{$_});
|
|
}
|
|
#my $msgtoparent=freeze(\@outhashes); # = XMLout(\%output,RootName => 'xcatresponse');
|
|
#print $out $msgtoparent; #$node.": $_\n";
|
|
}
|
|
|
|
1;
|