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barch
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barch
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#!/usr/bin/perl
#
# Barch v6.1
# Copyright (c) 2015 Alexey Baikov <sysboss[@]mail.ru>
#
# LVM backup solution
# An open source LVM backup utility for linux based systems.
# Barch conducts automatic and predefined volume structure recognition.
# Supports incremental backups. Based on duplicity.
#
use strict;
use warnings;
BEGIN { $ENV{'PERL_ANYEVENT_MODEL'} = 'Perl' }
use JSON;
use Switch;
use AnyEvent;
use XML::Simple;
use Sys::Syslog;
use Time::Piece;
use Net::OpenSSH;
use Getopt::Long;
use Config::Tiny;
use LWP::UserAgent;
use Twiggy::Server;
use AnyEvent::Util;
use File::Lockfile;
use AnyEvent::HTTP;
use File::Find::Rule;
use POSIX 'setsid';
use List::Util 'first';
use Digest::MD5 'md5_hex';
use Time::HiRes 'gettimeofday';
my $version = "6.1";
my $welcome = "Barch v$version - LVM Backup Solution";
# required tools
chomp( my $lvm = `which lvm` ); if( !$lvm ){ die "[ERR] No LVM found"; }
chomp( my $lvs = `which lvs` ); if( !$lvs ){ die "[ERR] No lvs found"; }
chomp( my $vgs = `which vgs` ); if( !$vgs ){ die "[ERR] No vgs found"; }
chomp( my $rm = `which rm` ); if( !$rm ){ die "[ERR] No rm found"; }
chomp( my $ssh = `which ssh` ); if( !$ssh ){ die "[ERR] No ssh found"; }
chomp( my $mount = `which mount` ); if( !$mount ){ die "[ERR] No mount found"; }
chomp( my $umount = `which umount` ); if( !$umount ){ die "[ERR] No umount found"; }
chomp( my $file = `which file` ); if( !$file ){ die "[ERR] No file found"; }
chomp( my $kpartx = `which kpartx` ); if( !$kpartx ){ die "[ERR] No kpartx found"; }
chomp( my $duplicity = `which duplicity` ); if( !$duplicity ){ die "[ERR] No duplicity found"; }
chomp( my $nice = `which nice` ); if( !$nice ){ die "[ERR] No nice found"; }
chomp( my $ionice = `which ionice` ); if( !$ionice ){ die "[ERR] No ionice found"; }
chomp( my $gpg = `which gpg` ); if( !$gpg ){ die "[ERR] No gpg found"; }
chomp( my $parted = `which parted` ); if( !$parted ){ die "[ERR] No parted found"; }
chomp( my $touch = `which touch` ); if( !$touch ){ die "[ERR] No touch found"; }
chomp( my $mkdir = `which mkdir` ); if( !$mkdir ){ die "[ERR] No mkdir found"; }
# signals handler
$SIG{TERM} = 'sigHandler';
$SIG{INT} = 'sigHandler';
# options
my $verbose ;
my $cleanup ;
my $debug ;
my $chconfig;
my $singleLV;
my $showhelp;
my $showV ;
my $dry_run ;
my $graceful;
my $daemon ;
sub usage {
print << "_END_USAGE";
$welcome
Copyright (c) 2015 Alexey Baikov <sysboss[\@]mail.ru>
usage: $0 [options] FROM
Options:
-c|--cleanup Recovery mode
-o|--only Single logical volume to backup
-h|--help Help (this info)
-d|--daemon Run as a daemon
--graceful Graceful stop
--version Display version
--syntax Verify config file syntax
Debug Options:
-v|--verbose Log to stdout
--debug Debug mode (very verbose)
--dry-run Discover only mode
_END_USAGE
exit 0;
}
GetOptions(
'v|verbose' => \$verbose,
'version' => \$showV,
'h|help' => \$showhelp,
'c|cleanup' => \$cleanup,
'debug' => \$debug,
'o|only=s' => \$singleLV,
'syntax' => \$chconfig,
'dry-run' => \$dry_run,
'graceful' => \$graceful,
'd|daemon' => \$daemon,
) || usage( "bad option" );
####################
# Configuration #
####################
my $pwd = '/etc/barch';
my $pref = '_bsnap';
my $conf = Config::Tiny->read("$pwd/barch.conf");
sub check_config {
die "$pwd/barch.conf file not found"
if not -e "$pwd/barch.conf";
# required sections
my @sections = ('default', 'global', 'snapshots', 'duplicity', 'advanced');
my $conf_ok = 0;
foreach my $section (@sections){
if ( ! first { $section eq $_ } keys %{$conf} ){
print "$section section is missing.\nCheck you configuration file\n";
exit 2;
}}
foreach my $section ( keys %{$conf} ) {
foreach my $parameter ( keys %{ $conf->{$section} } ){
if(
$parameter =~ /[\@#\-%&\$*+()]/ ||
$conf->{$section}{$parameter} =~ /[#\-%&\$*+()]/
){
print "[$section]\n";
print "\t$parameter = $conf->{$section}{$parameter}\n";
$conf_ok = 1;
}}
}
print "[WARN] Custom config file $conf->{advanced}{custom} not found\n"
if( $conf->{advanced}{custom} && !-e "$conf->{advanced}{custom}" );
if( $conf_ok != 0 ){
print "Config [ERROR]\n";
exit 2;
} else {
print "Config [OK]\n"
and exit 0 if $chconfig;
}
return 0;
}
####################
# Special params #
####################
# check config
check_config();
# display help
usage() if $showhelp;
# show version
if( $showV ){
print "$welcome\n\n";
exit 0;
}
# Global config
my $logfacility = $conf->{global}{facility} || 'deamon';
my $lock_dir = $conf->{global}{lock_dir} || '/var/lock/barch';
my $pidfile = $conf->{global}{pidfile} || 'barch.pid';
my $work_dir = $conf->{global}{work_dir} || '/var/cache/barch';
my $reportfile = $conf->{global}{report} || '/var/cache/barch/status';
my $bind_addr = $conf->{global}{listen} || '127.0.0.1';
my $bind_port = $conf->{global}{port} || '3088';
my $mount_dir = "$work_dir/mounts";
# Defaults
my $check_drbd = $conf->{default}{check_drbd} || 'false';
my $backup_lvm = $conf->{default}{backup_lvm} || 'false';
my $skip_always = $conf->{default}{skip_always} || 'swap';
my $instance = $conf->{default}{instance} || `hostname`;
my $vol_grace = $conf->{default}{vol_grace} || 600;
my $vol_cycle = $conf->{default}{vol_cycle} || '12H' ;
# DRBD
my $drbd_state = $conf->{drbd}{drbd_state} || 'any';
my $drbd_conn = $conf->{drbd}{drbd_conn} || 'Connected';
my $drbd_status = $conf->{drbd}{drbd_status} || 'UpToDate';
# DRBD Cluster
my $member_ip = $conf->{cluster}{member};
my $member_port = $conf->{cluster}{port};
my $member_err = $conf->{cluster}{on_error} || 'abort';
# Snapshots
my $snap_size = $conf->{snapshots}{snap_size} || '10G';
my $max_snap = $conf->{snapshots}{max_snap} || 90;
my %mount_opt = ( 'default' => '-o acl -o noatime -r',
'xfs' => '-o noatime -o ro' ,
'ntfs' => '-o noatime -o ro' );
# Nice and IONice configs
my $customconf = $conf->{advanced}{custom};
my $cpu_nice = $conf->{advanced}{cpu_nice} || 19 ;
my $io_nice = $conf->{advanced}{io_nice} || 7 ;
my $max_forks = $conf->{advanced}{max_forks} || 1 ;
my $timer_lvs = $conf->{advanced}{timer_lvs} || 15 ;
my $timer_drbd = $conf->{advanced}{timer_drbd} || 600;
my $stop_file = $conf->{advanced}{stop_file} || "$work_dir/.graceful";
# Duplicity
my $full_backup = $conf->{duplicity}{full} || '1W';
my $retries = $conf->{duplicity}{retries} || '6' ;
my $keep_last = $conf->{duplicity}{remove_older_than} || '2W';
my $encrypt_key = $conf->{duplicity}{encrypt_key};
my $encrypt_pass= $conf->{duplicity}{encrypt_pass};
my $rem_snapdir = $conf->{duplicity}{remote_snap_dir};
my $volsize = $conf->{duplicity}{volsize} || '25';
my $srcmismatch = $conf->{duplicity}{source_mismatch} || '' ;
my $trans_wait = $conf->{duplicity}{maxtransfertime} || '2H';
# target server SSH credentials
my $ssh_user = $conf->{ssh}{user} || 'root';
my $ssh_pass = $conf->{ssh}{password};
my $ssh_path = $conf->{ssh}{path} || '/usr/local/backup';
my $ssh_server = $conf->{ssh}{server};
# DRBD Params
my @drbd_view = ();
my $drbd_dump = ();
chomp( my $localhost = `hostname` );
####################
# Variables #
####################
# DEBUG parameters
my $silent = ' 1>/dev/null 2>/dev/null';
$silent = '' if $debug;
# Global variables
my $cv = AE::cv;
my $report = Config::Tiny->read( $reportfile ) || '';
my $custom = Config::Tiny->read( $customconf ) || '';
my $duplcache = '/root/.cache/duplicity/';
my $cycle_regex = '^(\d+)(M|H|D|W)$';
my $fs_support = 'ext(2|3|4)|swap|luks|lvm2';
my $mountablefs = 'ext(2|3|4)';
my $cluster_status = 0;
my %backups = ();
my %lvs_queue = ();
my @lvs_array = ();
my %queue = ();
my @q_order = ();
my %fullreport = ();
my @exclude_always = ();
####################
# Logging #
####################
# Initialize logging
sub logger {
my( $msg, $ident, $priority ) = @_;
# defaults
$priority = $priority || "info";
$ident = $ident || 'Main';
$ident = "Barch-$ident";
return if !$msg;
return if( $priority eq 'debug' && !$debug );
$msg = "[$ident] [" . uc($priority) . "] $msg";
# start log
openlog $ident, "pid,cons", $logfacility;
# write to log
syslog( $priority, $msg );
print "$msg\n" if $verbose;
closelog();
}
sub exit_fatal {
my( $msg, $ident ) = @_;
$ident = 'Main' if !$ident;
# write log
logger("FATAL: $msg",$ident,'crit') if $msg;
# cleanup
cleanup() and exit 2;
}
sub parse_period {
my $string = shift;
# validate period syntax
$string =~ /$cycle_regex/i;
return 'invalid' if( !$1 or !$2 );
switch( uc($2) ){
case 'M' { return int( $1 * 60 ) }
case 'H' { return int( $1 * 3600 ) }
case 'D' { return int( $1 * 86400 ) }
case 'W' { return int( $1 * 604800 ) }
}
return 'invalid';
}
####################
# Verification #
####################
# verify required files/dirs exist
mkdir $lock_dir if not -e $lock_dir;
mkdir $mount_dir if not -e $mount_dir;
`touch $reportfile`;
# Create lock file
my $lockfile = File::Lockfile->new(
$pidfile, $lock_dir
);
if( my $pid = $lockfile->check ){
die "Barch is already running with PID: $pid\n";
}
# run cleanup
if( $cleanup ){
$verbose = '1';
cleanup() and exit;
}
if( $graceful ){
`touch $stop_file $silent`;
logger('Daemon shutdown scheduled immediately after ' .
'currently running backups completion');
exit;
}
# single volume to backup
if( $singleLV ){
$verbose = '1';
exit_fatal('Invalid volume name')
if( $singleLV !~ m/^(\w+|[aA-zZ0-9\-\_\.\+]*)$/ );
}
# display warning
# if not binding on localhost
logger("Binding on $bind_addr:$bind_port",'Main')
if( $bind_addr ne '127.0.0.1' );
# validate cycle time
$vol_cycle = parse_period($vol_cycle);
$vol_grace = parse_period($vol_grace);
$trans_wait = parse_period($trans_wait);
logger("[ERR] Invalid volume backup cycle (vol_cycle)",'Main','err') and exit 2
if $vol_cycle eq 'invalid';
logger("[ERR] Invalid volume grace period (vol_grace)",'Main','err') and exit 2
if $vol_grace eq 'invalid';
logger("[ERR] Invalid chunk transfer time (maxtransfertime)",'Main','err') and exit 2
if $trans_wait eq 'invalid';
####################
# daemonize #
####################
&daemonize($pwd) if $daemon;
####################
# Cleanup #
####################
# remove old lockfiles
opendir my $dir, "$lock_dir";
my @lock_files = readdir $dir;
closedir $dir;
foreach my $file ( @lock_files ){
next if $file =~ /^\./;
unlink "$lock_dir/$file";
}
$lockfile->write;
# remove old mount points
# if left after crash
`rm -fr $mount_dir/*`
if $mount_dir ne '/';
####################
# Subroutines #
####################
sub parse_lvs {
shift =~ /^\s+(\w+|[aA-zZ0-9\-\_\.\+]*)\s+(\w+)\s+[^ ]+\s+([0-9\.]+)(\w)\s+((\w+|[aA-zZ0-9\-\_\.\+]*)\s+([0-9\.]+))?/;
return {
uid => md5_hex("$2.$1"),
lvname => $1,
vgname => $2,
size => $3,
unit => lc($4),
snapsize => $7,
origin => $6,
blkdev => "/dev/$2/$1",
lvsnap => "${1}$pref"
};
}
sub convert_time {
my $time = shift;
return "error" if ! $time;
my $days = int($time / 86400);
$time -= ($days * 86400);
my $hours = int($time / 3600);
$time -= ($hours * 3600);
my $minutes = int($time / 60);
my $seconds = $time % 60;
$days = $days < 1 ? '' : $days . 'd ';
$hours = $hours < 1 ? '' : $hours . 'h ';
$minutes = $minutes < 1 ? '' : $minutes.'m ';
return "$days$hours$minutes${seconds}s";
}
sub is_disabled_volume {
my ($vgname, $lvname) = @_;
my $section = "${vgname}.${lvname}";
return 0 if not $custom;
return 0 if not $custom->{$section}{backup};
if( $custom->{$section}{backup} eq 'false' ){
# remove from status
# file as well
delete $report->{$section}
if $report->{$section};
return 1;
}
return 0;
}
sub check_cluster_status {
http_get "http://$member_ip:$member_port/status", sub {
my( $body, $hdr ) = @_;
if( $hdr->{Status} =~ /^2/ ){
logger("Successfuly connected to cluster member $member_ip:$member_port")
if $cluster_status != 1;
$cluster_status = 1;
# synchronize status
my $status = decode_json $body;
foreach my $section ( keys %{ $status } ){
my %remote = %{ $status->{$section} };
my %local = %{ $report->{$section} }
if $report->{$section};
# nothing to sync
next if ! %remote;
# compare states
if( ! %local ){
$report->{$section} = \%remote;
} else {
$report->{$section} = \%remote
if $local{'timestamp'} < $remote{'timestamp'};
}
}
} else {
logger("Waiting for cluster member $member_ip:$member_port");
$cluster_status = 0;
}
};
}
sub check_drbd_state {
my ($vgname, $lvname) = @_;
my $disk = "/dev/$vgname/$lvname";
my $drbd_dev = '';
my $drbd_disk = '';
logger("DRBD configuration missing. Cannot identify DRBD device",$lvname,'err')
if ! $drbd_dump->{'resource'};
foreach my $resurce ( keys %{ $drbd_dump->{'resource'} } ){
my $k = $drbd_dump->{'resource'}{$resurce}{'host'}{$localhost}{'volume'};
my $d = $k->{'disk'};
next if not $d;
if( $d eq $disk ){
$drbd_disk = $d;
$drbd_dev = $k->{'device'}{'content'};
last;
}
}
if( $drbd_disk ne '' ){
my $drbd_name = ( split /\//, $drbd_disk )[-1];
foreach my $dev ( @drbd_view ){
$dev =~ /^\s+\d+\:(\w+|[aA-zZ0-9\-\_\.\+]*)\/\d+\s+(\w+)\s+(\w+)\/\w+\s+(\w+)\/.*/;
last if ! $1;
if( $1 eq $drbd_name && $2 && $3 && 4 ){
return {
dev => $drbd_dev,
disk => $drbd_disk,
state => $3,
conn => $2,
status => $4,
};
}}
}
return {dev => 'undefined'};
}
sub volume_grace_period {
my $device = shift;
return if not $device;
chomp( my $datetime = `lvdisplay $device | grep -i 'creation'` );
return if not $datetime;
$datetime =~ /(\d+-\d+-\d+\s+\d+:\d+:\d+)/;
return if not $1;
my $t1 = Time::Piece->strptime($1 => '%Y-%m-%d %H:%M:%S');
my $t2 = gmtime;
my $diff = $t2 - $t1;
# grace period
return $diff < $vol_grace;
}
sub create_snapshot {
my ($device,$lvname) = @_;
return if not $lvname || not $device;
# create snapshot
`$lvm lvcreate -L${snap_size} -n ${lvname}${pref} -s $device`;
sleep 1;
return $?;
}
sub remove_snapshot {
my $device = shift;
return if not $device;
# remove snapshot
`$lvm lvremove -f $device`;
sleep 1;
return $?;
}
sub queue_backup {
my %hash = @_;
my $section = "$hash{'vgname'}.$hash{'lvname'}";
# check last backup time
$hash{'timestamp'} = $report->{$section}{'timestamp'};
if( $hash{'timestamp'} ){
my @timenow = [gettimeofday];
my $passed = $timenow[0][0] - $hash{'timestamp'};
return if $passed < $vol_cycle;
# detect that volume backup
# is late for next scheduled cycle
if( $queue{ $hash{'uid'} } && ! $backups{ $hash{'uid'} } ){
if( not $queue{ $hash{'uid'} }{'acknowledged'} ){
logger("$hash{'lvname'} is in queue since previous cycle",$hash{'lvname'},'alert');
$queue{ $hash{'uid'} }{'acknowledged'} = 1;
$queue{ $hash{'uid'} }{'late'} = $passed;
}
return;
}
}
# already in queue
return if $queue{ $hash{'uid'} };
# add volume to queue
$queue{ $hash{'uid'} } = \%hash;
push @q_order, $hash{'uid'};
}
sub unqueue_by_id {
my $vol_id = shift;
my $index = 0;
delete $queue{ $vol_id };
for my $qid (@q_order){
splice @q_order, $index, 1
if $qid eq $vol_id;
$index++;
}
}
sub is_custom {
my ($vgname, $lvname) = @_;
my $section = "${vgname}.${lvname}";
if( $conf->{advanced}{custom} && -e $conf->{advanced}{custom} ){
my $custom = Config::Tiny->read($conf->{advanced}{custom});
foreach my $key ( keys %{ $custom } ){
return 1 if $key eq $section;
}}
return 0;
}
sub fs_type {
my %hash = @_;
my $dev = $hash{'blkdev'};
# custom specifications
logger("$hash{'lvname'} has custom definitions", $hash{'lvname'})
and return 'custom'
if is_custom($hash{'vgname'}, $hash{'lvname'});
# discover partitions
return 'partition'
if `$parted $dev print` =~ /(primary|extended)/;
# check filesystem type
if( lc(`$file -sL $dev`) =~ /($fs_support)/ ){
return $1;
}
logger("Failed to recognize file system on $dev", $hash{'lvname'},'err');
return 'unknown';
}
sub fs_mount_flag {
my $fs = shift;
return $mount_opt{$fs} if $mount_opt{$fs};
return $mount_opt{'default'};
}
sub clear_duplicity_locks {
my @locks = File::Find::Rule->file()
->name( '*.lock' )
->in( $duplcache );
foreach my $files ( @locks ){
unlink $files;
}
}
sub cleanup {
print 'Fatal error. work_dir is undefined' and exit 2
if !$work_dir || !$mount_dir;
# umount all
`$umount -r $mount_dir/* $silent`
if $mount_dir ne '/';
# remove snapshots
chomp( my @snaps = `$lvs | grep $pref` );
logger("No snapshots to remove") and exit 0
if not @snaps;
foreach my $snap ( @snaps ){
my %hash = %{ parse_lvs( $snap ) };
# handle snapshots only
next if( ! $hash{'snapsize'} && ! $hash{'origin'} );
# remove partitions, if any
`$kpartx -s -d /dev/$hash{'vgname'}/$hash{'lvname'}`;
# umount
`$umount $mount_dir/$hash{'lvname'} $silent`
if $mount_dir ne '/';
if( remove_snapshot("/dev/$hash{'vgname'}/$hash{'lvname'}") eq 0 ){
logger("$hash{'lvname'} - snapshot removed");
} else {
logger("$hash{'lvname'} - failed to remove snapshot",'Main','err');
}
}
exit 0;
}
sub reverse_cleanup {
my %hash = @_;
sleep 3;
foreach my $action ( @{ $hash{cleanup} } ){
if( system($action) ne 0 ){
sleep 1;
# action failed
# retry in a second
logger("Cleanup action failed: $action", $hash{'lvname'},'err')
if system($action) ne 0;
} else {
logger("Cleanup: $action", $hash{'lvname'},'debug');
}
sleep 1;
}
}
sub connect_ssh_backupserv {
my $openssh = Net::OpenSSH->new(
$ssh_server, user => $ssh_user,
master_opts => [ -o => "StrictHostKeyChecking=no" ]
);
logger("Couldn't establish SSH connection to backup server",'Main','err')
and return 0
if $openssh->error;
return $openssh;
}
sub check_ssh_connection {
my $openssh = connect_ssh_backupserv();
return 0 if ! $openssh;
return 1;
}
sub create_remote_dir {
my $dir = shift;
my $openssh = connect_ssh_backupserv();
return 0 if ! $openssh;
$openssh->system("mkdir -p $ssh_path/$instance/$dir")
or logger("Failed to create remote directory on $ssh_server over SSH",'Main','err')
and return 0;
return 1;
}
sub report {
my %hash = @_;
my $section = "$hash{'vgname'}.$hash{'lvname'}";
my $date = localtime;
my @timestamp = [gettimeofday];
return if $dry_run;
# update existing
if( $report->{$section} ){
$report->{$section}{date} = $date->cdate;
$report->{$section}{timestamp} = "$timestamp[0][0]";
$report->{$section}{elapsed} = $hash{'elapsed'};
$report->{$section}{exit_code} = $hash{'code'};
$report->{$section}{status} = $hash{'status'};
$report->{$section}{hostname} = $localhost;
$report->{$section}{fstype} = $hash{'fstype'};
}
# create new section
else{
$report->{$section} = {
date => $date->cdate,
timestamp => "$timestamp[0][0]",
elapsed => $hash{'elapsed'},
status => $hash{'status'},
exit_code => $hash{'code'},
fstype => $hash{'fstype'},
hostname => $localhost,
};
}
}
sub discover {
my %hash = @_;
my $path = $hash{'path'};
my $section = "$hash{'vgname'}.$hash{'lvname'}";
# verify block device exist
if( not -e $hash{'blkdev'} ){
$hash{'status'} = "Block device $hash{'blkdev'} doesn't exist. Skip.";
$hash{'code'} = 2;
logger($hash{'status'}, $hash{'lvname'},'warning');
return %hash;
}
# discover structure
$hash{'fstype'} = fs_type(%hash);
# handle exceptions
switch( $hash{'fstype'} ){
case 'unknown' {
$hash{'status'} = "Failed to recognize file system on $hash{'blkdev'}";
$hash{'code'} = 2;
}
case /$skip_always/ {
$hash{'status'} = "$hash{'blkdev'} contains $hash{'fstype'}. Skip";
$hash{'code'} = 4;
}
case 'lvm2' {
if( $backup_lvm ne 'true' ){
$hash{'status'} = "$hash{'blkdev'} contains LVM. backup_lvm flag is not 'true'";
$hash{'code'} = 4;
}}
case 'swap' {
$hash{'status'} = "$hash{'blkdev'} contains swap. Skip";
$hash{'code'} = 4;
}
}
# return on exception
if( $hash{'code'} ){
logger($hash{'status'}, $hash{'lvname'},'warning');
return %hash;
}
# mountable file system
if( $hash{'fstype'} =~ m/$mountablefs/ ){
# get mount flags
my $mount_opts = fs_mount_flag( $hash{'fstype'} );
push(@{ $hash{hierarchy} }, $hash{'fstype'});
# mount file system
`$mount -t $hash{'fstype'} $mount_opts $hash{'blkdev'} $path`;
if( $? ne 0 ){
$hash{'status'} = "Failed to mount $hash{'blkdev'} on $path";
$hash{'code'} = 2;
logger($hash{'status'}, $hash{'lvname'},'err');
return %hash;
} else {
logger("Mount $hash{'blkdev'} on $path (opts: $mount_opts)",$hash{'lvname'},'debug');
push(@{ $hash{cleanup} }, "$umount $path");
}
$hash{'status'} = "Mount succeeded";
$hash{'code'} = 0;
return %hash;
}
# handle partition table
elsif( $hash{'fstype'} eq 'partition' ){
logger("$hash{'blkdev'} contains partition table",$hash{'lvname'},'debug');
# get partitions
chomp( my @partition = `$kpartx -l $hash{'blkdev'} | awk '{print \$1}'` );
if( system("$kpartx -s -a $hash{'blkdev'}") ne 0 ){
$hash{'status'} = "Failed to map partitions on $hash{'blkdev'}";
$hash{'code'} = 2;
logger($hash{'status'}, $hash{'lvname'},'err');
return %hash;
} else {
my %data = %hash;
foreach my $part (@partition){
logger("Partition found: $part",$hash{'lvname'},'debug');
push(@{ $hash{hierarchy} }, "partition");
$data{'path'} = "$hash{'path'}/$part";
$data{'blkdev'} = "/dev/mapper/$part";
# create temporary mount point
`mkdir -p $data{'path'}`;
# rediscover
%data = discover(%data);
if( $data{'code'} ne 0 && $data{'code'} ne 4 && $data{'code'} ne 6 ){
$hash{'status'} = "One or more partition recognition failed";
$hash{'code'} = 2;
logger($hash{'status'}, $hash{'lvname'},'err');
return %hash;
}}
# cleanup
push(@{ $hash{cleanup} }, "$kpartx -s -d $hash{'blkdev'}");
%hash = %data;
}
}
# LVM2
elsif( $hash{'fstype'} eq 'lvm2' ){
push(@{ $hash{hierarchy} }, "LVM");
logger("$hash{'blkdev'} contains LVM",$hash{'lvname'},'debug');
# discover VG name(s)
chomp(my @VG = `pvdisplay $hash{'blkdev'} | grep -i "vg name" | awk '{print \$NF}'`);
my $filter = '';
foreach my $inVG (@VG){
push(@{ $hash{hierarchy} }, "Volume Group $inVG");
# activate volume group
if( system("vgchange -ay $inVG $silent") ne 0 ){
$hash{'status'} = "vgchange failed to activate $inVG";
$hash{'code'} = 2;
logger($hash{'status'}, $hash{'lvname'},'err');
}
sleep 0.2;
$filter .= " | grep $inVG";
}
if( $hash{'code'} eq 0 ){
# filter relevant lvs
chomp( my @innerLV = `lvs $filter` );
my %data = %hash;
foreach my $lv (@innerLV){
my %innerLV = %{ parse_lvs( $lv ) };
push(@{ $hash{hierarchy} }, "Volume: $lv");
$data{'path'} = "$hash{'path'}/data{'vgname'}/data{'lvname'}";
$data{'blkdev'} = "/dev/data{'vgname'}/data{'lvname'}";
# create temporary mount point
`$mkdir -p $data{'path'}`;
# rediscover
%data = discover(%data);
if( $data{'code'} ne 0 && $data{'code'} ne 4 && $data{'code'} ne 6 ){
$hash{'status'} = "One or more Logical Volumes in data{'vgname'} recognition failed";
$hash{'code'} = 2;
logger($hash{'status'}, $hash{'lvname'},'err');
return %hash;
}}}
foreach my $inVG (@VG){
push(@{ $hash{cleanup} },"vgchange -an $inVG $silent");
}
return %hash;
}
# custom
elsif( $hash{'fstype'} eq 'custom' ){
if( ! $custom->{$section}{backup} ){
logger('Custom config backup flag is missing',$hash{'lvname'},'warning');
$hash{'status'} = 'Custom config error';
$hash{'code'} = 1;
return %hash;
}
if( $custom->{$section}{backup} eq 'true' ){
my $cfs = $custom->{$section}{fs_type};
my $pre_m = $custom->{$section}{pre_mount};
my $post_m = $custom->{$section}{post_mount};
my $mopt = $custom->{$section}{mount_opt};
# pre-mount script
if( $pre_m ){
`$pre_m` if $pre_m ne 'none';
if( $? ne 0 ){
logger("Pre-mount script failed (exit code $?)",$hash{'lvname'},'err');
$hash{'status'} = 'Pre-mount script failed';
$hash{'code'} = 2;
return %hash;
}}
# get mount flags
$mopt = fs_mount_flag($cfs)
if ! $mopt;
# mount filesystem
`$mount -t $cfs $mopt $hash{'blkdev'} $path`;
if( $? ne 0 ){
$hash{'status'} = "Failed to mount $hash{'blkdev'} on $path";
$hash{'code'} = 2;