/[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 50 by dpavlin, Thu Aug 14 22:49:05 2008 UTC revision 65 by dpavlin, Fri Feb 27 20:05:02 2009 UTC
# Line 6  use Shell qw/rsync vzlist lvcreate mount Line 6  use Shell qw/rsync vzlist lvcreate mount
6  my $vz   = '/vz';  my $vz   = '/vz';
7  my $conf = '/etc/vz/conf';  my $conf = '/etc/vz/conf';
8    
9  my $snap_size = '100M';  my $snap_size = '1G';
10    
11  my ( $action, $VEID ) = @ARGV;  my ( $action, $VEID ) = @ARGV;
12    
13  my $use_snapshot = 0;  my $use_snapshot = 1;
14    
15  my $valid_actions = 'create|mount|umount|destroy';  my $valid_actions = 'create|mount|umount|destroy';
16    
# Line 39  if ( $action =~ m/(create|umount|destroy Line 39  if ( $action =~ m/(create|umount|destroy
39          open(my $m, '-|', 'mount') || die "can't open mount: $!";          open(my $m, '-|', 'mount') || die "can't open mount: $!";
40          while(<$m>) {          while(<$m>) {
41                  my @v = split(/\s+/,$_);                  my @v = split(/\s+/,$_);
42                  if ( $v[2] =~ m!/(private|root)/$CVEID$! && $v[5] =~ m/bind/ ) {                  if ( $v[2] =~ m{/(private|root)/$CVEID$} && $v[5] =~ m/bind/ ) {
43                          umount( $v[2] );                          umount( $v[2] );
44                  } elsif ( $v[2] =~ m!vz-clone-$CVEID$! ) {                  } elsif ( $v[2] =~ m{vz-clone-$CVEID$} ) {
45                          $clone = $v[2];                          $clone = $v[2];
46                  }                  }
47          }          }
48          umount( $clone ) if $clone;          umount( $clone ) if $clone;
49            lvremove( '-f', $clone );
50    
51          exit if $action eq 'umount';          exit if $action eq 'umount';
52  }  }
# Line 90  sub copy_files { Line 91  sub copy_files {
91    
92  if ( $vz_lv ) {  if ( $vz_lv ) {
93    
94          my ( $vz_lv_path, $vz_lv_name ) = ( $1, $2 ) if ( $vz_lv =~ m!^(.+)/([^/]+)$! );          my ( $vz_lv_path, $vz_lv_name ) = ( $1, $2 ) if ( $vz_lv =~ m{^(.+)/([^/]+)$} );
95    
96          my $snap = $vz_lv_name . '-snap';          my $snap = $vz_lv_name . '-snap';
97          my $clone = "vz-clone-$CVEID";          my $clone = "vz-clone-$CVEID";
# Line 123  if ( $vz_lv ) { Line 124  if ( $vz_lv ) {
124    
125                  do_mount( "$vz_lv_path/$snap", "/tmp/$snap" );                  do_mount( "$vz_lv_path/$snap", "/tmp/$snap" );
126                    
127          }                  mount_bind( "/tmp/$snap/private/$VEID", "$vz/private/$CVEID" );
128                    mount_bind( "/tmp/$snap/root/$VEID", "$vz/root/$CVEID" );
         my $vg_name = $1 if ( $vz_lv_path =~ m!/([^/]+)/*$! );  
129    
         if ( lvdisplay( "$vz_lv_path/$clone" ) ) {  
                 warn "using existing $vz_lv_path/$clone\n";  
130          } else {          } else {
                 my $clone_size = fs_quota( $VEID ) . 'k';  
                 print "Creating LV $clone ($clone_size bytes) in VG $vg_name for $VEID clone filesystem\n";  
                 lvcreate( '--size', $clone_size, '--name', $clone, $vg_name );  
                 mke2fs( '-m', 0, '-j', "$vz_lv_path/$clone" );  
         }  
   
         do_mount( "$vz_lv_path/$clone", "/tmp/$clone" );  
131    
132          test_mkdir( "/tmp/$clone/private" );                  if ( lvdisplay( "$vz_lv_path/$clone" ) ) {
133          test_mkdir( "/tmp/$clone/root" );                          warn "using existing $vz_lv_path/$clone\n";
134                    } else {
135          mount_bind( "/tmp/$clone/private", "$vz/private/$CVEID" );                          my $vg_name = $1 if ( $vz_lv_path =~ m{/([^/]+)/*$} );
136          mount_bind( "/tmp/$clone/root", "$vz/root/$CVEID" );                          my $clone_size = fs_quota( $VEID ) . 'k';
137                            print "Creating LV $clone ($clone_size bytes) in VG $vg_name for $VEID clone filesystem\n";
138          if ( $use_snapshot ) {                          lvcreate( '--size', $clone_size, '--name', $clone, $vg_name );
139                            mke2fs( '-m', 0, '-j', "$vz_lv_path/$clone" );
140                  copy_files( "/tmp/$snap/private/$VEID", "/tmp/$clone/private" );                  }
   
                 print "Cleanup\n";  
141    
142                  #umount( "$vz_lv_path/$clone" );                  do_mount( "$vz_lv_path/$clone", "/tmp/$clone" );
                 umount( "$vz_lv_path/$snap" );  
143    
144                  lvremove( '-f', "$vz_lv_path/$snap" );                  test_mkdir( "/tmp/$clone/private" );
145                    test_mkdir( "/tmp/$clone/root" );
146    
         } else {  
147                  copy_files( "$vz/private/$VEID", "/tmp/$clone/private" );                  copy_files( "$vz/private/$VEID", "/tmp/$clone/private" );
148    
149                    mount_bind( "/tmp/$clone/private", "$vz/private/$CVEID" );
150                    mount_bind( "/tmp/$clone/root", "$vz/root/$CVEID" );
151    
152          }          }
153    
154  } else {  } else {
# Line 192  sub fix_hostname { Line 183  sub fix_hostname {
183  open(my $o, '<', "$conf/$VEID.conf")  || die "can't open $conf/$VEID.conf: $!";  open(my $o, '<', "$conf/$VEID.conf")  || die "can't open $conf/$VEID.conf: $!";
184  open(my $n, '>', "$conf/$CVEID.conf") || die "can't open $conf/$CVEID.conf: $!";  open(my $n, '>', "$conf/$CVEID.conf") || die "can't open $conf/$CVEID.conf: $!";
185  while(<$o>) {  while(<$o>) {
186          s!^HOSTNAME=(.*)$!fix_hostname($1)!ie;          s{^HOSTNAME=(.*)$}{fix_hostname($1)}ie;
187          s!^IP_ADDRESS=(.*)$!fix_ip($1)!ie;          s{^IP_ADDRESS=(.*)$}{fix_ip($1)}ie;
188          s!^(ONBOOT=).*$!# modified by $0\n$1"no"!i;          s{^(ONBOOT=).*$}{# modified by $0\n$1"no"}i;
189          print $n $_;          print $n $_;
190  }  }
191    
192    print $n qq{DISK_QUOTA="no"\n} if $use_snapshot; # don't wait for quota rebuild on startup
193    
194  print "\nPlease review config file: $conf/$CVEID.conf\nAdd NAT for new VE with: iptables -t nat -A POSTROUTING -s $ve_clone_ip -o eth0 -j MASQUERADE\nStart clone of $VEID with: vzctl start $CVEID\n"  print "\nPlease review config file: $conf/$CVEID.conf\nAdd NAT for new VE with: iptables -t nat -A POSTROUTING -s $ve_clone_ip -o eth0 -j MASQUERADE\nStart clone of $VEID with: vzctl start $CVEID\n"
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