Add GetOptions helptext to syncoid
Lots of changes here Notably: nocommandcheck is now no-command-check sshoptions can be specified multiple times sshcipher now defaults to whatever your ssh client wants to compress no longer accepts "no" or "0"
This commit is contained in:
Charles Pigott
parent
36980d4788
commit
f8ea8f907d
319
syncoid
319
syncoid
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@ -4,25 +4,43 @@
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# from http://www.gnu.org/licenses/gpl-3.0.html on 2014-11-17. A copy should also be available in this
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# project's Git repository at https://github.com/jimsalterjrs/sanoid/blob/master/LICENSE.
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my $version = '1.4.16';
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$::VERSION = '1.4.16';
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use strict;
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use warnings;
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use Data::Dumper;
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use Getopt::Long qw(:config auto_version auto_help);
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use Pod::Usage;
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use Time::Local;
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use Sys::Hostname;
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my %args = getargs(@ARGV);
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# Blank defaults to use ssh client's default
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# TODO: Merge into a single "sshflags" option?
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my %args = ('sshkey' => '', 'sshport' => '', 'sshcipher' => '', 'sshoption' => [], 'target-bwlimit' => '', 'source-bwlimit' => '');
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GetOptions(\%args, "no-command-checks", "monitor-version", "compress=s", "dumpsnaps", "recursive|r",
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"source-bwlimit=s", "target-bwlimit=s", "sshkey=s", "sshport=i", "sshcipher|c=s", "sshoption|o=s@",
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"debug", "quiet", "no-stream", "no-sync-snap") or pod2usage(2);
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if ($args{'version'}) {
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print "Syncoid version: $version\n";
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exit 0;
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$args{'compress'} = compressargset($args{'compress'} || 'default'); # Can't be done with GetOptions arg, as default still needs to be set
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# TODO Expand to accept multiple sources?
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if (scalar(@ARGV) != 2) {
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print("Source or target not found!\n");
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pod2usage(2);
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exit 127;
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} else {
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$args{'source'} = $ARGV[0];
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$args{'target'} = $ARGV[1];
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}
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if (!(defined $args{'source'} && defined $args{'target'})) {
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print 'usage: syncoid [src_user@src_host:]src_pool/src_dataset [dst_user@dst_host:]dst_pool/dst_dataset'."\n";
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exit 127;
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# Could possibly merge these into an options function
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if (length $args{'source-bwlimit'}) {
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$args{'source-bwlimit'} = "-R $args{'source-bwlimit'}";
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}
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if (length $args{'target-bwlimit'}) {
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$args{'target-bwlimit'} = "-r $args{'target-bwlimit'}";
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}
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$args{'streamarg'} = (defined $args{'no-stream'} ? '-i' : '-I');
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my $rawsourcefs = $args{'source'};
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my $rawtargetfs = $args{'target'};
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@ -32,25 +50,8 @@ my $quiet = $args{'quiet'};
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my $zfscmd = '/sbin/zfs';
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my $sshcmd = '/usr/bin/ssh';
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my $pscmd = '/bin/ps';
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my $sshcipher;
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if (defined $args{'c'}) {
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$sshcipher = "-c $args{'c'}";
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} else {
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$sshcipher = '-c chacha20-poly1305@openssh.com,arcfour';
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}
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my $sshport = '-p 22';
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my $sshoption;
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if (defined $args{'o'}) {
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my @options = split(',', $args{'o'});
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foreach my $option (@options) {
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$sshoption .= " -o $option";
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if ($option eq "NoneSwitch=yes") {
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$sshcipher = "";
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}
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}
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} else {
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$sshoption = "";
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}
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my $pvcmd = '/usr/bin/pv';
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my $mbuffercmd = '/usr/bin/mbuffer';
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my $sudocmd = '/usr/bin/sudo';
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@ -59,23 +60,24 @@ my $mbufferoptions = '-q -s 128k -m 16M 2>/dev/null';
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# being present on remote machines.
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my $lscmd = '/bin/ls';
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if ( $args{'sshport'} ) {
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$sshport = "-p $args{'sshport'}";
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if (length $args{'sshcipher'}) {
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$args{'sshcipher'} = "-c $args{'sshcipher'}";
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}
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if (length $args{'sshport'}) {
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$args{'sshport'} = "-p $args{'sshport'}";
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}
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if (length $args{'sshkey'}) {
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$args{'sshkey'} = "-i $args{'sshkey'}";
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}
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my $sshoptions = join " ", map { "-o " . $_ } $args{'sshoption'};
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# figure out if source and/or target are remote.
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if ( $args{'sshkey'} ) {
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$sshcmd = "$sshcmd $sshoption $sshcipher $sshport -i $args{'sshkey'}";
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}
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else {
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$sshcmd = "$sshcmd $sshoption $sshcipher $sshport";
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}
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$sshcmd = "$sshcmd $args{'sshcipher'} $sshoptions $args{'sshport'} $args{'sshkey'}";
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my ($sourcehost,$sourcefs,$sourceisroot) = getssh($rawsourcefs);
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my ($targethost,$targetfs,$targetisroot) = getssh($rawtargetfs);
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my $sourcesudocmd;
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my $targetsudocmd;
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if ($sourceisroot) { $sourcesudocmd = ''; } else { $sourcesudocmd = $sudocmd; }
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if ($targetisroot) { $targetsudocmd = ''; } else { $targetsudocmd = $sudocmd; }
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my $sourcesudocmd = $sourceisroot ? '' : $sudocmd;
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my $targetsudocmd = $targetisroot ? '' : $sudocmd;
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# figure out whether compression, mbuffering, pv
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# are available on source, target, local machines.
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@ -88,7 +90,7 @@ my %snaps;
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## can loop across children separately, for recursive ##
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## replication ##
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if (! $args{'recursive'}) {
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if (defined $args{'recursive'}) {
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syncdataset($sourcehost, $sourcefs, $targethost, $targetfs);
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} else {
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if ($debug) { print "DEBUG: recursive sync of $sourcefs.\n"; }
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@ -161,11 +163,15 @@ sub syncdataset {
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%snaps = (%sourcesnaps, %targetsnaps);
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}
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if ($args{'dumpsnaps'}) { print "merged snapshot list of $targetfs: \n"; dumphash(\%snaps); print "\n\n\n"; }
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if (defined $args{'dumpsnaps'}) {
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print "merged snapshot list of $targetfs: \n";
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dumphash(\%snaps);
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print "\n\n\n";
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}
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# create a new syncoid snapshot on the source filesystem.
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my $newsyncsnap;
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if (!defined ($args{'no-sync-snap'}) ) {
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if (!defined $args{'no-sync-snap'}) {
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$newsyncsnap = newsyncsnap($sourcehost,$sourcefs,$sourceisroot);
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} else {
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# we don't want sync snapshots created, so use the newest snapshot we can find.
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@ -334,111 +340,38 @@ sub syncdataset {
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} # end syncdataset()
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sub getargs {
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my @args = @_;
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my %args;
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my %novaluearg;
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my %validarg;
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push my @validargs, ('debug','nocommandchecks','version','monitor-version','compress','c','o','source-bwlimit','target-bwlimit','dumpsnaps','recursive','r','sshkey','sshport','quiet','no-stream','no-sync-snap');
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foreach my $item (@validargs) { $validarg{$item} = 1; }
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push my @novalueargs, ('debug','nocommandchecks','version','monitor-version','dumpsnaps','recursive','r','quiet','no-stream','no-sync-snap');
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foreach my $item (@novalueargs) { $novaluearg{$item} = 1; }
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while (my $rawarg = shift(@args)) {
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my $arg = $rawarg;
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my $argvalue = '';
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if ($rawarg =~ /=/) {
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# user specified the value for a CLI argument with =
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# instead of with blank space. separate appropriately.
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$argvalue = $arg;
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$arg =~ s/=.*$//;
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$argvalue =~ s/^.*=//;
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}
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if ($rawarg =~ /^--/) {
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# doubledash arg
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$arg =~ s/^--//;
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if (! $validarg{$arg}) { die "ERROR: don't understand argument $rawarg.\n"; }
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if ($novaluearg{$arg}) {
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$args{$arg} = 1;
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} else {
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# if this CLI arg takes a user-specified value and
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# we don't already have it, then the user must have
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# specified with a space, so pull in the next value
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# from the array as this value rather than as the
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# next argument.
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if ($argvalue eq '') { $argvalue = shift(@args); }
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$args{$arg} = $argvalue;
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}
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} elsif ($arg =~ /^-/) {
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# singledash arg
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$arg =~ s/^-//;
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if (! $validarg{$arg}) { die "ERROR: don't understand argument $rawarg.\n"; }
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if ($novaluearg{$arg}) {
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$args{$arg} = 1;
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} else {
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# if this CLI arg takes a user-specified value and
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# we don't already have it, then the user must have
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# specified with a space, so pull in the next value
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# from the array as this value rather than as the
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# next argument.
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if ($argvalue eq '') { $argvalue = shift(@args); }
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$args{$arg} = $argvalue;
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}
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} else {
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# bare arg
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if (defined $args{'source'}) {
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if (! defined $args{'target'}) {
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$args{'target'} = $arg;
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} else {
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die "ERROR: don't know what to do with third bare argument $rawarg.\n";
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}
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} else {
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$args{'source'} = $arg;
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}
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}
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sub compressargset {
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my ($value) = @_;
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my %comargs = ('rawcmd' => '', 'args' => '', 'decomrawcmd' => '', 'decomargs' => '');
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if (!(grep $value eq $_, ('gzip', 'pigz-fast', 'pigz-slow', 'lzo', 'default', 'none'))) {
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warn "Unrecognised compression value $value, defaulting to lzo";
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$value = 'default';
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}
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if (defined $args{'source-bwlimit'}) { $args{'source-bwlimit'} = "-R $args{'source-bwlimit'}"; } else { $args{'source-bwlimit'} = ''; }
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if (defined $args{'target-bwlimit'}) { $args{'target-bwlimit'} = "-r $args{'target-bwlimit'}"; } else { $args{'target-bwlimit'} = ''; }
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if (defined $args{'no-stream'}) { $args{'streamarg'} = '-i'; } else { $args{'streamarg'} = '-I'; }
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if ($args{'r'}) { $args{'recursive'} = $args{'r'}; }
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if (!defined $args{'compress'}) { $args{'compress'} = 'default'; }
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if ($args{'compress'} eq 'gzip') {
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$args{'rawcompresscmd'} = '/bin/gzip';
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$args{'compressargs'} = '-3';
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$args{'rawdecompresscmd'} = '/bin/zcat';
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$args{'decompressargs'} = '';
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} elsif ( ($args{'compress'} eq 'pigz-fast')) {
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$args{'rawcompresscmd'} = '/usr/bin/pigz';
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$args{'compressargs'} = '-3';
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$args{'rawdecompresscmd'} = '/usr/bin/pigz';
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$args{'decompressargs'} = '-dc';
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} elsif ( ($args{'compress'} eq 'pigz-slow')) {
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$args{'rawcompresscmd'} = '/usr/bin/pigz';
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$args{'compressargs'} = '-9';
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$args{'rawdecompresscmd'} = '/usr/bin/pigz';
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$args{'decompressargs'} = '-dc';
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} elsif ( ($args{'compress'} eq 'lzo') || ($args{'compress'} eq 'default') ) {
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$args{'rawcompresscmd'} = '/usr/bin/lzop';
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$args{'compressargs'} = '';
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$args{'rawdecompresscmd'} = '/usr/bin/lzop';
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$args{'decompressargs'} = '-dfc';
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} else {
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$args{'rawcompresscmd'} = '';
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$args{'compressargs'} = '';
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$args{'rawdecompresscmd'} = '';
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$args{'decompressargs'} = '';
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if ($value eq 'gzip') {
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$comargs{'rawcmd'} = '/bin/gzip';
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$comargs{'args'} = '-3';
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$comargs{'decomrawcmd'} = '/bin/zcat';
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$comargs{'decomargs'} = '';
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} elsif ($value eq 'pigz-fast') {
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$comargs{'rawcmd'} = '/usr/bin/pigz';
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$comargs{'args'} = '-3';
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$comargs{'decomrawcmd'} = '/usr/bin/pigz';
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$comargs{'decomargs'} = '-dc';
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} elsif ($value eq 'pigz-slow') {
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$comargs{'rawcmd'} = '/usr/bin/pigz';
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$comargs{'args'} = '-9';
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$comargs{'decomrawcmd'} = '/usr/bin/pigz';
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$comargs{'decomargs'} = '-dc';
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} elsif (($value eq 'lzo') || ($value eq 'default') ) {
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$comargs{'rawcmd'} = '/usr/bin/lzop';
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$comargs{'args'} = '';
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$comargs{'decomrawcmd'} = '/usr/bin/lzop';
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$comargs{'decomargs'} = '-dfc';
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}
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$args{'compresscmd'} = "$args{'rawcompresscmd'} $args{'compressargs'}";
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$args{'decompresscmd'} = "$args{'rawdecompresscmd'} $args{'decompressargs'}";
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return %args;
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$comargs{'compress'} = $value;
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$comargs{'cmd'} = "$comargs{'rawcmd'} $comargs{'args'}";
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$comargs{'decomcmd'} = "$comargs{'decomrawcmd'} $comargs{'decomargs'}";
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return \%comargs;
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}
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sub checkcommands {
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@ -468,24 +401,15 @@ sub checkcommands {
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# if raw compress command is null, we must have specified no compression. otherwise,
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# make sure that compression is available everywhere we need it
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if ($args{'rawcompresscmd'} eq '') {
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$avail{'sourcecompress'} = 0;
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$avail{'sourcecompress'} = 0;
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$avail{'localcompress'} = 0;
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if ($args{'compress'} eq 'none' ||
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$args{'compress'} eq 'no' ||
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$args{'compress'} eq '0') {
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if ($debug) { print "DEBUG: compression forced off from command line arguments.\n"; }
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} else {
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print "WARN: value $args{'compress'} for argument --compress not understood, proceeding without compression.\n";
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}
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if ($args{'compress'}{'compress'} eq 'none') {
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if ($debug) { print "DEBUG: compression forced off from command line arguments.\n"; }
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} else {
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if ($debug) { print "DEBUG: checking availability of $args{'rawcompresscmd'} on source...\n"; }
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$avail{'sourcecompress'} = `$sourcessh $lscmd $args{'rawcompresscmd'} 2>/dev/null`;
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if ($debug) { print "DEBUG: checking availability of $args{'rawcompresscmd'} on target...\n"; }
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$avail{'targetcompress'} = `$targetssh $lscmd $args{'rawcompresscmd'} 2>/dev/null`;
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if ($debug) { print "DEBUG: checking availability of $args{'rawcompresscmd'} on local machine...\n"; }
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$avail{'localcompress'} = `$lscmd $args{'rawcompresscmd'} 2>/dev/null`;
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if ($debug) { print "DEBUG: checking availability of $args{'compress'}{'rawcmd'} on source...\n"; }
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$avail{'sourcecompress'} = `$sourcessh $lscmd $args{'compress'}{'rawcmd'} 2>/dev/null`;
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if ($debug) { print "DEBUG: checking availability of $args{'compress'}{'rawcmd'} on target...\n"; }
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$avail{'targetcompress'} = `$targetssh $lscmd $args{'compress'}{'rawcmd'} 2>/dev/null`;
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if ($debug) { print "DEBUG: checking availability of $args{'compress'}{'rawcmd'} on local machine...\n"; }
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$avail{'localcompress'} = `$lscmd $args{'compress'}{'rawcmd'} 2>/dev/null`;
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}
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my ($s,$t);
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@ -511,14 +435,14 @@ sub checkcommands {
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if ($avail{'sourcecompress'} eq '') {
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if ($args{'rawcompresscmd'} ne '') {
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print "WARN: $args{'compresscmd'} not available on source $s- sync will continue without compression.\n";
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if ($args{'compress'}{'rawcmd'} ne '') {
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print "WARN: $args{'compress'}{'rawcmd'} not available on source $s- sync will continue without compression.\n";
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}
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$avail{'compress'} = 0;
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}
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if ($avail{'targetcompress'} eq '') {
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if ($args{'rawcompresscmd'} ne '') {
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print "WARN: $args{'compresscmd'} not available on target $t - sync will continue without compression.\n";
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if ($args{'compress'}{'rawcmd'} ne '') {
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print "WARN: $args{'compress'}{'rawcmd'} not available on target $t - sync will continue without compression.\n";
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}
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$avail{'compress'} = 0;
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}
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@ -530,8 +454,8 @@ sub checkcommands {
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# corner case - if source AND target are BOTH remote, we have to check for local compress too
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if ($sourcehost ne '' && $targethost ne '' && $avail{'localcompress'} eq '') {
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if ($args{'rawcompresscmd'} ne '') {
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print "WARN: $args{'compresscmd'} not available on local machine - sync will continue without compression.\n";
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if ($args{'compress'}{'rawcmd'} ne '') {
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print "WARN: $args{'compress'}{'rawcmd'} not available on local machine - sync will continue without compression.\n";
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}
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$avail{'compress'} = 0;
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}
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@ -687,9 +611,9 @@ sub buildsynccmd {
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$synccmd = "$sendcmd |";
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# avoid confusion - accept either source-bwlimit or target-bwlimit as the bandwidth limiting option here
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my $bwlimit = '';
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if (defined $args{'source-bwlimit'}) {
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if (length $args{'bwlimit'}) {
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$bwlimit = $args{'source-bwlimit'};
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} elsif (defined $args{'target-bwlimit'}) {
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} elsif (length $args{'target-bwlimit'}) {
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$bwlimit = $args{'target-bwlimit'};
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}
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@ -698,18 +622,18 @@ sub buildsynccmd {
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$synccmd .= " $recvcmd";
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} elsif ($sourcehost eq '') {
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# local source, remote target.
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#$synccmd = "$sendcmd | $pvcmd | $args{'compresscmd'} | $mbuffercmd | $sshcmd $targethost '$args{'decompresscmd'} | $mbuffercmd | $recvcmd'";
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#$synccmd = "$sendcmd | $pvcmd | $args{'compress'}{'cmd'} | $mbuffercmd | $sshcmd $targethost '$args{'compress'}{'decomcmd'} | $mbuffercmd | $recvcmd'";
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$synccmd = "$sendcmd |";
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if ($avail{'localpv'} && !$quiet) { $synccmd .= " $pvcmd -s $pvsize |"; }
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if ($avail{'compress'}) { $synccmd .= " $args{'compresscmd'} |"; }
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if ($avail{'compress'}) { $synccmd .= " $args{'compress'}{'cmd'} |"; }
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if ($avail{'sourcembuffer'}) { $synccmd .= " $mbuffercmd $args{'source-bwlimit'} $mbufferoptions |"; }
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$synccmd .= " $sshcmd $targethost '";
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if ($avail{'targetmbuffer'}) { $synccmd .= " $mbuffercmd $args{'target-bwlimit'} $mbufferoptions |"; }
|
||||
if ($avail{'compress'}) { $synccmd .= " $args{'decompresscmd'} |"; }
|
||||
if ($avail{'compress'}) { $synccmd .= " $args{'compress'}{'decomcmd'} |"; }
|
||||
$synccmd .= " $recvcmd'";
|
||||
} elsif ($targethost eq '') {
|
||||
# remote source, local target.
|
||||
#$synccmd = "$sshcmd $sourcehost '$sendcmd | $args{'compresscmd'} | $mbuffercmd' | $args{'decompresscmd'} | $mbuffercmd | $pvcmd | $recvcmd";
|
||||
#$synccmd = "$sshcmd $sourcehost '$sendcmd | $args{'compress'}{'cmd'} | $mbuffercmd' | $args{'decompress'}{'cmd'} | $mbuffercmd | $pvcmd | $recvcmd";
|
||||
$synccmd = "$sshcmd $sourcehost '$sendcmd";
|
||||
if ($avail{'compress'}) { $synccmd .= " | $args{'compresscmd'}"; }
|
||||
if ($avail{'sourcembuffer'}) { $synccmd .= " | $mbuffercmd $args{'source-bwlimit'} $mbufferoptions"; }
|
||||
|
|
@ -720,18 +644,18 @@ sub buildsynccmd {
|
|||
$synccmd .= "$recvcmd";
|
||||
} else {
|
||||
#remote source, remote target... weird, but whatever, I'm not here to judge you.
|
||||
#$synccmd = "$sshcmd $sourcehost '$sendcmd | $args{'compresscmd'} | $mbuffercmd' | $args{'decompresscmd'} | $pvcmd | $args{'compresscmd'} | $mbuffercmd | $sshcmd $targethost '$args{'decompresscmd'} | $mbuffercmd | $recvcmd'";
|
||||
#$synccmd = "$sshcmd $sourcehost '$sendcmd | $args{'compress'}{'cmd'} | $mbuffercmd' | $args{'compress'}{'decomcmd'} | $pvcmd | $args{'compress'}{'cmd'} | $mbuffercmd | $sshcmd $targethost '$args{'compress'}{'decomcmd'} | $mbuffercmd | $recvcmd'";
|
||||
$synccmd = "$sshcmd $sourcehost '$sendcmd";
|
||||
if ($avail{'compress'}) { $synccmd .= " | $args{'compresscmd'}"; }
|
||||
if ($avail{'compress'}) { $synccmd .= " | $args{'compress'}{'cmd'}"; }
|
||||
if ($avail{'sourcembuffer'}) { $synccmd .= " | $mbuffercmd $args{'source-bwlimit'} $mbufferoptions"; }
|
||||
$synccmd .= "' | ";
|
||||
if ($avail{'compress'}) { $synccmd .= "$args{'decompresscmd'} | "; }
|
||||
if ($avail{'compress'}) { $synccmd .= "$args{'compress'}{'decomcmd'} | "; }
|
||||
if ($avail{'localpv'} && !$quiet) { $synccmd .= "$pvcmd -s $pvsize | "; }
|
||||
if ($avail{'compress'}) { $synccmd .= "$args{'compresscmd'} | "; }
|
||||
if ($avail{'compress'}) { $synccmd .= "$args{'compress'}{'cmd'} | "; }
|
||||
if ($avail{'localmbuffer'}) { $synccmd .= "$mbuffercmd $mbufferoptions | "; }
|
||||
$synccmd .= "$sshcmd $targethost '";
|
||||
if ($avail{'targetmbuffer'}) { $synccmd .= "$mbuffercmd $args{'target-bwlimit'} $mbufferoptions | "; }
|
||||
if ($avail{'compress'}) { $synccmd .= "$args{'decompresscmd'} | "; }
|
||||
if ($avail{'compress'}) { $synccmd .= "$args{'compress'}{'decomcmd'} | "; }
|
||||
$synccmd .= "$recvcmd'";
|
||||
}
|
||||
return $synccmd;
|
||||
|
|
@ -865,7 +789,7 @@ sub getssh {
|
|||
if ($remoteuser eq 'root') { $isroot = 1; } else { $isroot = 0; }
|
||||
# now we need to establish a persistent master SSH connection
|
||||
$socket = "/tmp/syncoid-$remoteuser-$rhost-" . time();
|
||||
open FH, "$sshcmd -M -S $socket -o ControlPersist=1m $sshport $rhost exit |";
|
||||
open FH, "$sshcmd -M -S $socket -o ControlPersist=1m $args{'sshport'} $rhost exit |";
|
||||
close FH;
|
||||
$rhost = "-S $socket $rhost";
|
||||
} else {
|
||||
|
|
@ -985,4 +909,39 @@ sub getdate {
|
|||
return %date;
|
||||
}
|
||||
|
||||
__END__
|
||||
|
||||
=head1 NAME
|
||||
|
||||
syncoid - ZFS snapshot replication tool
|
||||
|
||||
=head1 SYNOPSIS
|
||||
|
||||
syncoid [options]... SOURCE TARGET
|
||||
or syncoid [options]... SOURCE [USER@]HOST:TARGET
|
||||
or syncoid [options]... [USER@]HOST:SOURCE [TARGET]
|
||||
or syncoid [options]... [USER@]HOST:SOURCE [USER@]HOST:TARGET
|
||||
|
||||
SOURCE Source ZFS dataset. Can be either local or remote
|
||||
TARGET Target ZFS dataset. Can be either local or remote
|
||||
|
||||
Options:
|
||||
|
||||
--compress=FORMAT Compresses data during transfer. Currently accepted options are gzip, pigz-fast, pigz-slow, lzo (default) & none
|
||||
--recursive|r Also transfers child datasets
|
||||
--source-bwlimit=<limit k|m|g|t> Bandwidth limit on the source transfer
|
||||
--target-bwlimit=<limit k|m|g|t> Bandwidth limit on the target transfer
|
||||
|
||||
--sshkey=FILE Specifies a ssh public key to use to connect
|
||||
--sshport=PORT Connects to remote on a particular port
|
||||
--sshcipher|c=CIPHER Passes CIPHER to ssh to use a particular cipher set
|
||||
--sshoption|o=OPTION Passes OPTION to ssh for remote usage. Can be specified multiple times
|
||||
|
||||
--help Prints this helptext
|
||||
--verbose Prints the version number
|
||||
--debug Prints out a lot of additional information during a syncoid run
|
||||
--monitor-version Currently does nothing
|
||||
--quiet Suppresses non-error output
|
||||
--dumpsnaps Dumps a list of snapshots during the run
|
||||
--no-command-checks Do not check command existence before attempting transfer. Not recommended
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue