Subversion Repositories zfs_utils

#! /usr/bin/env perl

use strict;

use warnings;

use FindBin;

use lib "$FindBin::Bin/..";

use Data::Dumper;

use ZFS_Utils qw(loadConfig shredFile logMsg makeReplicateCommands mountDriveByLabel mountGeli runCmd $logFileName $displayLogsOnConsole);

# set the log file to be next to this script

$logFileName = "$FindBin::Bin/sneakernet.log";

# display all log messages on console in addition to the log file

$displayLogsOnConsole = 1;

my $configFileName = "$0.conf.yaml";

my $config = {

   # file created on source server to track last copyed dataset

   'status_file' => "$0.status",

   #information about source server

   'source_server' => {

      'hostname' => '', # used to see if we are on source

      'poolname' => '', # name of the ZFS pool to export

   },

   #information about target server

   'target_server' => {

      'hostname' => '', # used to see if we are on target

      'poolname' => '', # name of the ZFS pool to import

      # if this is set, the dataset uses GELI, so we must decrypt and

      # mount it first

      'geli' => {

         'keydiskname' => 'replica', # the GPT label of the key disk

         'keyfile' => 'geli.key', # the name of the key file on keydiskname

         'localKey' => 'e98c660cccdae1226550484d62caa2b72f60632ae0c607528aba1ac9e7bfbc9c', # hex representation of the local key part

         'target' => '/media/geli.key', # location to create the combined keyfile

         'poolname' => '', # name of the ZFS pool to import

         'diskList' => [ 

            '/dev/gpt/sneakernet_disk' 

            ], # list of disks to try to mount the dataset from

      }

   },

   'transport' => {

      # this is the GPT label of the sneakernet disk

      'disk_label' => 'sneakernet',

      # where we want to mount it

      'mount_point' => '/mnt/sneakernet',

      # amount of time to wait for the disk to appear

      'timeout' => 600,

      # if set, all files will be encrypted with this key/IV during transport

      'encryption' => {

         'key'    => '', # openssl rand 32 | xxd -p | tr -d '\n' > test.key

         'IV'     => '00000000000000000000000000000000',

      },

   },

   'datasets' => {

      'iscsi' => {

         'source' => 'storage/backup/iscsi',

         'target' => 'storage/backup/iscsi',

         'filename' => 'iscsi'

      },

      'files_share'  => {

         'source' => 'storage/backup/files_share',

         'target' => 'storage/backup/files_share',

         'filename' => 'files_share'

      },

   }

};

# generate a random key with

# openssl rand 32 | xxd -p | tr -d '\n' > test.key

# If a YAML config file exists next to the script, load and merge it

$config = loadConfig($configFileName, $config );

# set some defaults

$config->{'status_file'} = "$0.status" unless ( defined $config->{'status_file'} );

die "Invalid config file: missing source and/or target server\n"

    unless (defined $config->{source_server} && defined $config->{target_server});

my $servername = `hostname -s`;

chomp $servername;

if ( $servername eq $config->{source_server}->{hostname} ) {

    logMsg "Running as source server\n";

    # source server logic here

} elsif ( $servername eq $config->{target_server}->{hostname} ) {

    logMsg "Running as target server\n";

    mountGeli( $config->{target_server}->{geli} ) if ( defined $config->{target_server}->{geli} );

} else {

    logMsg "This server ($servername) is neither source nor target server as per config\n";

    die;

}

# read in history/status file

my $targetList = [];

if ( -e $config->{status_file} && open my $fh, '<', $config->{status_file} ) {

   chomp( my @lines = <$fh> );

   $targetList = \@lines;

   close $fh;

} else {

   logMsg("Error: could not read status file '$config->{status_file}': $!");

   die;

}

my $newStatus = [];

foreach my $dataset ( sort keys %{$config->{datasets}} ) {

   logMsg("Processing dataset '$dataset'");

   my $sourceList = [ runCmd( "zfs", "list", "-rt", "snap", "-H", "-o", "name", $config->{datasets}->{$dataset}->{source} ) ];

   # process dataset here

   my $commands = makeReplicateCommands($sourceList, $targetList, $newStatus );

   foreach my $cmd ( @$commands ) {

      $cmd .= " > $config->{transport}->{mount_point}/" . $dataset;

      logMsg("Running command: $cmd");

      #runCmd( split( /\s+/, $cmd ) );

   }

}

1;

#`cat $config->{input} | openssl enc -aes-256-cbc -K $config->{key} -iv $config->{IV} > $config->{output}`;

# this will decrypt $config->{output} to stdout

#`cat $config->{output} | openssl enc -aes-256-cbc -d -K $config->{key} -iv $config->{IV} > test.out`;