use -mode instead of -snapshot, -suspend and -stop

PVE/VZDump.pm

@@ -427,7 +427,7 @@ sub new {
     check_bin ('cstream');
     check_bin ('ionice');
 
-    if ($opts->{snapshot}) {
+    if ($opts->{mode} && $opts->{mode} eq 'snapshot') {
 	check_bin ('lvcreate');
 	check_bin ('lvs');
 	check_bin ('lvremove');
@@ -444,10 +444,6 @@ sub new {
 	}
     }
 
-    $opts->{mode} = 'stop' if $opts->{stop};
-    $opts->{mode} = 'suspend' if $opts->{suspend};
-    $opts->{mode} = 'snapshot' if $opts->{snapshot};
-
     $opts->{dumpdir} =~ s|/+$|| if ($opts->{dumpdir});
     $opts->{tmpdir} =~ s|/+$|| if ($opts->{tmpdir});
 
@@ -1048,20 +1044,12 @@ my $confdesc = {
 	optional => 1,
 	default => 0,
     },
-    stop => {
-	type => 'boolean',
-	description => "Stop/Restart VM when running.",
-	optional => 1,
-    },
-    snapshot => {
-	type => 'boolean',
-	description => "Try to use (LVM) snapshots when running.",
-	optional => 1,
-    },
-    suspend => {
-	type => 'boolean',
-	description => "Suspend/resume VM when running",
+    mode => {
+	type => 'string',
+	description => "Backup mode.",
 	optional => 1,
+	default => 'stop',
+	enum => [ 'snapshot', 'suspend', 'stop' ],
     },
     exclude => {
 	type => 'string', format => 'pve-vmid-list',
@@ -1136,6 +1124,11 @@ my $confdesc = {
     },
 };
 
+sub option_exists {
+    my $key = shift;
+    return defined($confdesc->{$key});
+}
+
 # add JSON properties for create and set function
 sub json_config_properties {
     my $prop = shift;

bin/vzdump

@@ -56,7 +56,7 @@ machines (VMs). It basically creates a tar archive of the VM private area,
 which also includes the VM configuration files. vzdump currently
 supports OpenVZ and QemuServer VMs.
 
-There are several ways to provide consistency:
+There are several ways to provide consistency (option C<mode>):
 
 =over 2
 
@@ -157,15 +157,15 @@ Simply dump VM 777 - no snapshot, just archive the VM private area and configura
 
 Use rsync and suspend/resume to create an snapshot (minimal downtime).
 
- # vzdump 777 --suspend
+ # vzdump 777 --mode suspend
 
 Backup all VMs and send notification mails to root and admin.
 
- # vzdump --all --suspend --mailto root --mailto admin
+ # vzdump --all --mode suspend --mailto root --mailto admin
 
 Use LVM2 to create snapshots (no downtime).
 
- # vzdump 777 --dumpdir /mnt/backup --snapshot
+ # vzdump 777 --dumpdir /mnt/backup --mode snapshot
 
 Backup more than one VM (selectively)
 
@@ -173,7 +173,7 @@ Backup more than one VM (selectively)
 
 Backup all VMs excluding VM 101 and 102
 
- # vzdump --suspend --exclude 101,102
+ # vzdump --mode suspend --exclude 101,102
 
 Restore an OpenVZ machine to VM 600