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#!/usr/bin/perl |
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use warnings; |
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use strict; |
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use Net::OpenSSH; |
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use Data::Dump qw(dump); |
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use List::Util qw(first); |
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use Time::HiRes; |
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my $compress = '| lzop -c'; |
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my $decompress = 'lzop -d |'; |
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my $arh = Net::OpenSSH->new('root@10.60.0.204'); |
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my $dev = Net::OpenSSH->new('root@10.60.0.202'); |
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sub on { |
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my ($ssh,$command) = @_; |
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warn "## ", $ssh->get_host, "> $command\n" if $ENV{DEBUG}; |
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if ( $command =~ m/zfs list/ ) { |
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map { |
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chomp; $_; |
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} $ssh->capture($command); |
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} else { |
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$ssh->capture($command); |
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} |
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} |
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print on $arh => 'zpool status'; |
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print on $dev => 'zpool status'; |
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my @arh = on $arh => 'zfs list -H -o name'; |
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my @dev = on $dev => 'zfs list -H -o name'; |
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warn "# ",dump( \@arh, \@dev ); |
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my $from_pool = $arh[0]; |
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my $to_pool = $dev[0]; |
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sub snapshots_from { |
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my ($ssh) = @_; |
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my $host = $ssh->get_host; |
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my $snapshot; |
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my @snapshots = on $ssh => 'zfs list -H -t snapshot -o name'; |
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die $ssh->error if $ssh->error; |
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foreach my $s (@snapshots) { |
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my ($fs,$name) = split(/\@/,$s); |
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push @{ $snapshot->{$fs} }, $name; |
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} |
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# warn "snapshots_from $host ",dump($snapshot),$/; |
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return $snapshot; |
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} |
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foreach my $fs ( @arh ) { |
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my $name = $fs; |
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$name =~ s{^$from_pool/}{} || next; # FIXME skip top-level fs |
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warn "? $name"; |
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my $arh_snapshot = snapshots_from $arh; |
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if ( ! exists( $arh_snapshot->{$fs} ) ) { |
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my $snapshot = $fs . '@send'; |
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print on $arh => "zfs snapshot $snapshot"; |
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die $arh->error if $arh->error; |
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$arh_snapshot = snapshots_from $arh; |
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} |
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my $max_snapshot = $#{ $arh_snapshot->{$fs} }; |
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warn "$fs has ",$max_snapshot+1," snapshots\n"; |
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my $to_dev = "$to_pool/$name"; |
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foreach my $i ( 0 .. $max_snapshot ) { |
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my $snap = $arh_snapshot->{$fs}->[$i] || die "no snap"; |
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my $dev_snapshot = snapshots_from $dev; |
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if ( exists $dev_snapshot->{$to_dev} ) { |
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if ( first { /^\Q$snap\E$/ } @{ $dev_snapshot->{$to_dev} } ) { |
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warn "+ $name @ $snap exists\n"; |
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next; |
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} else { |
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warn "- $name @ $snap missing\n"; |
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} |
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} else { |
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warn "$name not found on target yet"; |
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} |
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my $snapshot; |
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if ( $i == 0 ) { |
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$snapshot = "$from_pool/$name\@$snap"; |
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} else { |
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my $prev = $arh_snapshot->{$fs}->[$i-1] || die "no prev"; |
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$snapshot = "-i $from_pool/$name\@$prev $from_pool/$name\@$snap"; |
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} |
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warn "zfs transfer $snapshot -> $to_dev\n"; |
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my $t = time(); |
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my $recv = "nc -w 3 -l -p 8888 | $decompress zfs receive $to_dev"; |
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warn ">> $recv\n"; |
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my ($rin1,$pid1) = $dev->pipe_in($recv); |
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warn ">> pid: $pid1"; |
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sleep 1; # FIXME wait for netcat to start |
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my $send = "zfs send $snapshot $compress | nc -q 0 -w 2 10.60.0.202 8888"; |
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warn "<< $send\n"; |
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$arh->system($send); |
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die $arh->error if $arh->error; |
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$t = time() - $t; |
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warn "took $t seconds to complete\n"; |
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$dev->system("zfs set readonly=on $to_pool/$name") if $i == 0; |
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warn "ERROR: ",$dev->error if $dev->error; |
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sleep 1; |
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$dev_snapshot = snapshots_from $dev; |
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die "can't find new snapshot $snap" unless $dev_snapshot->{$to_dev}; |
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} |
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} |
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