/[vz-tools]/trunk/vz-clone.pl
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Diff of /trunk/vz-clone.pl

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revision 69 by dpavlin, Tue Mar 3 20:58:48 2009 UTC revision 74 by dpavlin, Mon Mar 9 19:09:22 2009 UTC
# Line 1  Line 1 
1  #!/usr/bin/perl -w  #!/usr/bin/perl -w
2    
3  use strict;  use strict;
4  use Shell qw/rsync vzlist lvcreate mount umount lvremove which lvdisplay mke2fs vzctl/;  use Shell qw/rsync lvcreate mount umount lvremove which lvdisplay mke2fs/;
5    
6  my $vz   = '/vz';  use lib 'lib';
7  my $conf = '/etc/vz/conf';  use VZ;
8    
9  my $snap_size = '10G';  my $snap_size = '10G';
10    
# Line 14  my $use_snapshot = 1; Line 14  my $use_snapshot = 1;
14    
15  my $valid_actions = 'create|mount|umount|destroy';  my $valid_actions = 'create|mount|umount|destroy';
16    
17  die "Usage: $0 ($valid_actions) VEID\n\n",vzlist unless $VEID && $action && $action =~ m/($valid_actions)/;  die "Usage: $0 ($valid_actions) VEID\n\n",`vzlist` unless $VEID && $action && $action =~ m{($valid_actions)};
18    
19  my $CVEID = "10$VEID";  my $CVEID = "10$VEID";
20    
# Line 68  print "Clone VE $VEID -> $CVEID\n"; Line 68  print "Clone VE $VEID -> $CVEID\n";
68    
69  my $vz_lv;  my $vz_lv;
70    
71  open(my $m, '<', '/etc/fstab') || die "can't open /etc/fstab: $!";  open(my $m, '-|', "df $vz_root") || die "can't open df $vz_root: $!";
72  while(<$m>) {  while(<$m>) {
73          next if m/^#/;          next if ! m{^/};
74          my @v = split(/\s+/,$_);          my @v = split(/\s+/,$_);
75          if ( $v[1] =~ m/\Q$vz\E/ ) {          $vz_lv = $v[0];
76                  $vz_lv = $v[0];          $vz_lv =~ s{^/dev/mapper/([^\-]+)-(.+)$}{/dev/$1/$2};
77                  warn "found LV $vz_lv for $vz\n";                  # rewrite /dev/mapper/vg-lv to /dev/vg/lv
78                  last;          warn "found LV $vz_lv for $vz_root\n";
79          }          last;
80  }  }
81    
82  sub fs_quota {  sub fs_quota {
# Line 132  if ( $vz_lv ) { Line 132  if ( $vz_lv ) {
132    
133                  do_mount( "$vz_lv_path/$snap", "/tmp/$snap" );                  do_mount( "$vz_lv_path/$snap", "/tmp/$snap" );
134                    
135                  mount_bind( "/tmp/$snap/private/$VEID", "$vz/private/$CVEID" );                  mount_bind( "/tmp/$snap/private/$VEID", "$vz_root/private/$CVEID" );
136                  mount_bind( "/tmp/$snap/root/$VEID", "$vz/root/$CVEID" );                  mount_bind( "/tmp/$snap/root/$VEID", "$vz_root/root/$CVEID" );
137    
138          } else {          } else {
139    
# Line 152  if ( $vz_lv ) { Line 152  if ( $vz_lv ) {
152                  test_mkdir( "/tmp/$clone/private" );                  test_mkdir( "/tmp/$clone/private" );
153                  test_mkdir( "/tmp/$clone/root" );                  test_mkdir( "/tmp/$clone/root" );
154    
155                  copy_files( "$vz/private/$VEID", "/tmp/$clone/private" );                  copy_files( "$vz_root/private/$VEID", "/tmp/$clone/private" );
156    
157                  mount_bind( "/tmp/$clone/private", "$vz/private/$CVEID" );                  mount_bind( "/tmp/$clone/private", "$vz_root/private/$CVEID" );
158                  mount_bind( "/tmp/$clone/root", "$vz/root/$CVEID" );                  mount_bind( "/tmp/$clone/root", "$vz_root/root/$CVEID" );
159    
160          }          }
161    
162  } else {  } else {
163    
164          copy_files( "$vz/private/$VEID", "$vz/private/$CVEID" );          copy_files( "$vz_root/private/$VEID", "$vz_root/private/$CVEID" );
165  }  }
166    
167  exit if $action eq 'mount';  exit if $action eq 'mount';
# Line 188  sub fix_hostname { Line 188  sub fix_hostname {
188          return $note . qq{HOSTNAME="$hostname"};          return $note . qq{HOSTNAME="$hostname"};
189  }  }
190    
191  open(my $o, '<', "$conf/$VEID.conf")  || die "can't open $conf/$VEID.conf: $!";  open(my $o, '<', "$vz_conf/$VEID.conf")  || die "can't open $vz_conf/$VEID.conf: $!";
192  open(my $n, '>', "$conf/$CVEID.conf") || die "can't open $conf/$CVEID.conf: $!";  open(my $n, '>', "$vz_conf/$CVEID.conf") || die "can't open $vz_conf/$CVEID.conf: $!";
193  while(<$o>) {  while(<$o>) {
194          s{^HOSTNAME=(.*)$}{fix_hostname($1)}ie;          s{^HOSTNAME=(.*)$}{fix_hostname($1)}ie;
195          s{^IP_ADDRESS=(.*)$}{fix_ip($1)}ie;          s{^IP_ADDRESS=(.*)$}{fix_ip($1)}ie;
# Line 201  print $n qq{DISK_QUOTA="no"\n} if $use_s Line 201  print $n qq{DISK_QUOTA="no"\n} if $use_s
201    
202  my $iptables="iptables -t nat -A POSTROUTING -s $ve_clone_ip -o eth0 -j MASQUERADE";  my $iptables="iptables -t nat -A POSTROUTING -s $ve_clone_ip -o eth0 -j MASQUERADE";
203  system( $iptables );  system( $iptables );
204  print "\nConfig file: $conf/$CVEID.conf\nAdded NAT for new VE with: $iptables\nStart clone of $VEID with: vzctl start $CVEID\n"  print "\nConfig file: $vz_conf/$CVEID.conf\nAdded NAT for new VE with: $iptables\nStart clone of $VEID with: vzctl start $CVEID\n"
205    
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