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rodolico |
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#! /usr/bin/env perl
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use strict;
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use warnings;
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use Data::Dumper;
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my $target = shift;
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my @toProcess = @ARGV;
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my $hypervisor = 'virsh'; $hypervisor = 'xl' unless `which $hypervisor`;
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die "Could not determine hypervisor\n" unless `which $hypervisor`;
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sub checkConnection {
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my ($hypervisor,$target) = @_;
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if ( $hypervisor eq 'virsh' ) {
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die "Could not make a connection to $target\n" unless `virsh -c qemu+ssh://$target/system list`;
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} else {
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die "I don't know how to migrate Xen\n";
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}
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}
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sub trim {
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my $string = shift;
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$string =~ s/^\s+|\s+$//;
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return $string;
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}
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# get the name and ID of all virtuals running on this machine
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sub getRunningVirtuals {
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my $hypervisor = shift;
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my %virtuals;
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if ( $hypervisor eq 'virsh' ) {
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my @output = `virsh list`;
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my @headers = split( '\s+', lc( trim( $output[0] ) ) );
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# die join( "\n", @headers ) . "\n";
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for (my $line = 1; $line < @output; $line++ ) {
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next if $output[$line] =~ m/^[^\s]*$/; # skip line of all dashes or empty
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my %temp;
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@temp{@headers} = split( '\s+', trim( $output[$line] ) );
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$virtuals{$temp{'name'}} = $temp{'id'};
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}
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} else {
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die "I don't know how to get a list of virtuals for $hypervisor\n";
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}
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return \%virtuals;
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}
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sub checkVirtual {
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my ($runningDomains, $domain ) = @_;
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# if they gave us a valid name, just return it
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return $domain if $runningDomains->{$domain};
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if ( $domain =~ m/^\d+$/ ) { # they passed a number, is it an ID?
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foreach my $this ( keys %$runningDomains ) {
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# if it is the id, return the name
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return $this if ( $runningDomains->{$this} == $domain );
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}
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}
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die "The domain, $domain, was not found on this machine\n";
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}
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&checkConnection( $hypervisor,$target );
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my $running = &getRunningVirtuals( $hypervisor );
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if ( $toProcess[0] eq 'ALL' ) {
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print "Warning, you are moving everything! Type 'yes' to continue ";
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my $yesno = <STDIN>;
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chomp $yesno;
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die unless ( lc $yesno eq 'yes' );
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@toProcess = keys %$running;
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}
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while ( my $domain = shift @toProcess ) {
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my $domainName = &checkVirtual( $running, $domain );
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print "\n==Migrating $domainName to $target\n";
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print "\tvirsh migrate --live --persistent --verbose $domain qemu+ssh://$target/system\n";
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#`virsh migrate --live --persistent --verbose $domain qemu+ssh://$target/system`
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}
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