/[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 26 by dpavlin, Thu Oct 4 23:23:20 2007 UTC revision 29 by dpavlin, Fri Oct 5 01:01:13 2007 UTC
# Line 10  my $snap_size = '100M'; Line 10  my $snap_size = '100M';
10    
11  my ( $action, $VEID ) = @ARGV;  my ( $action, $VEID ) = @ARGV;
12    
13  my $valid_actions = 'create|umount|destroy';  my $use_snapshot = 0;
14    
15    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  if ( $action eq 'destroy' ) {  my $CVEID = "10$VEID";
20    
21    sub vzctl_stop {
22            my $veid = shift;
23          my $vzlist = vzlist();          my $vzlist = vzlist();
24          if ( $vzlist =~ m/$VEID/ ) {          if ( $vzlist =~ m/$veid/ ) {
25                  print "stop $VEID\n";                  print "stop $veid\n";
26                  vzctl('stop', $VEID);                  vzctl('stop', $veid);
27          }          }
28  }  }
29    
30  if ( $action =~ m/(umount|destroy)/ ) {  
31    if ( $action eq 'create' ) {
32            vzctl_stop( $CVEID );
33    } elsif ( $action eq 'destroy' ) {
34            vzctl_stop( $VEID );
35    }
36    
37    
38    if ( 1 || $action =~ m/(umount|destroy)/ ) {
39          my $clone;          my $clone;
40          open(my $m, '-|', 'mount') || die "can't open mount: $!";          open(my $m, '-|', 'mount') || die "can't open mount: $!";
41          while(<$m>) {          while(<$m>) {
# Line 37  if ( $action =~ m/(umount|destroy)/ ) { Line 50  if ( $action =~ m/(umount|destroy)/ ) {
50  }  }
51    
52  #die "unknown action: $action" unless $action eq 'create';  #die "unknown action: $action" unless $action eq 'create';
53  exit unless $action eq 'create';  exit unless $action =~ m/(create|mount)/;
   
 my $CVEID = "10$VEID";  
54    
55  my $orig_conf = "/etc/vz/conf/$VEID.conf";  my $orig_conf = "/etc/vz/conf/$VEID.conf";
56    
# Line 73  sub fs_quota { Line 84  sub fs_quota {
84    
85  sub copy_files {  sub copy_files {
86          my ( $from, $to ) = @_;          my ( $from, $to ) = @_;
87            return if $action ne 'create';
88          warn "rsync $from -> $to\n";          warn "rsync $from -> $to\n";
89          rsync('-raSHAD', "$from/", "$to/" );          rsync('-raSHAD', "$from/", "$to/" );
90  }  }
# Line 105  if ( $vz_lv ) { Line 117  if ( $vz_lv ) {
117                  mount( '--bind', $from, $to );                  mount( '--bind', $from, $to );
118          }          }
119    
120          print "Creating $snap_size snapshot $snap from $vz_lv\n";          if ( $use_snapshot ) {
         lvcreate( '--size', $snap_size, '--snapshot', '--name', $snap, $vz_lv );  
121    
122          do_mount( "$vz_lv_path/$snap", "/tmp/$snap" );                  print "Creating $snap_size snapshot $snap from $vz_lv\n";
123                    lvcreate( '--size', $snap_size, '--snapshot', '--name', $snap, $vz_lv );
124    
125                    do_mount( "$vz_lv_path/$snap", "/tmp/$snap" );
126            
127            }
128    
         my $clone_size = fs_quota( $VEID ) . 'k';  
129          my $vg_name = $1 if ( $vz_lv_path =~ m!/([^/]+)/*$! );          my $vg_name = $1 if ( $vz_lv_path =~ m!/([^/]+)/*$! );
130    
131          if ( lvdisplay( "$vz_lv_path/$clone" ) ) {          if ( lvdisplay( "$vz_lv_path/$clone" ) ) {
132                  warn "using existing $vz_lv_path/$clone\n";                  warn "using existing $vz_lv_path/$clone\n";
133          } else {          } else {
134                    my $clone_size = fs_quota( $VEID ) . 'k';
135                  print "Creating LV $clone ($clone_size bytes) in VG $vg_name for $VEID clone filesystem\n";                  print "Creating LV $clone ($clone_size bytes) in VG $vg_name for $VEID clone filesystem\n";
136                  lvcreate( '--size', $clone_size, '--name', $clone, $vg_name );                  lvcreate( '--size', $clone_size, '--name', $clone, $vg_name );
137                  mke2fs( '-m', 0, '-j', "$vz_lv_path/$clone" );                  mke2fs( '-m', 0, '-j', "$vz_lv_path/$clone" );
# Line 129  if ( $vz_lv ) { Line 145  if ( $vz_lv ) {
145          mount_bind( "/tmp/$clone/private", "$vz/private/$CVEID" );          mount_bind( "/tmp/$clone/private", "$vz/private/$CVEID" );
146          mount_bind( "/tmp/$clone/root", "$vz/root/$CVEID" );          mount_bind( "/tmp/$clone/root", "$vz/root/$CVEID" );
147    
148          copy_files( "/tmp/$snap/private/$VEID", "$vz/private/$CVEID" );          if ( $use_snapshot ) {
149    
150                    copy_files( "/tmp/$snap/private/$VEID", "/tmp/$clone/private" );
151    
152                    print "Cleanup\n";
153    
154          print "Cleanup\n";                  #umount( "$vz_lv_path/$clone" );
155                    umount( "$vz_lv_path/$snap" );
156    
157          #umount( "$vz_lv_path/$clone" );                  lvremove( '-f', "$vz_lv_path/$snap" );
         umount( "$vz_lv_path/$snap" );  
158    
159          lvremove( '-f', "$vz_lv_path/$snap" );          } else {
160                    copy_files( "$vz/private/$VEID", "/tmp/$clone/private" );
161    
162            }
163    
164  } else {  } else {
165    
166          copy_files( "$vz/private/$VEID", "$vz/private/$CVEID" );          copy_files( "$vz/private/$VEID", "$vz/private/$CVEID" );
167  }  }
168    
169    exit if $action eq 'mount';
170    
171  my $note = "# modified by $0\n";  my $note = "# modified by $0\n";
172    
173  sub fix_ip {  sub fix_ip {
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