+ my $snap = '__base__';
+
+ my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) =
+ $class->parse_volname($volname);
+
+ die "create_base not possible with base image\n" if $isBase;
+
+ my ($size, $parent, $format, undef) = rbd_volume_info($scfg, $storeid, $name);
+ die "rbd volume info on '$name' failed\n" if !($size);
+
+ die "rbd image must be at format V2" if $format ne "2";
+
+ die "volname '$volname' contains wrong information about parent $parent $basename\n"
+ if $basename && (!$parent || $parent ne $basename."@".$snap);
+
+ my $newname = $name;
+ $newname =~ s/^vm-/base-/;
+
+ my $newvolname = $basename ? "$basename/$newname" : "$newname";
+
+ my $cmd = &$rbd_cmd($scfg, $storeid, 'rename', $name, $newname);
+ run_command($cmd, errmsg => "rbd rename $name' error", errfunc => sub {});
+
+ my $running = undef; #fixme : is create_base always offline ?
+
+ $class->volume_snapshot($scfg, $storeid, $newname, $snap, $running);
+
+ my (undef, undef, undef, $protected) = rbd_volume_info($scfg, $storeid, $newname, $snap);
+
+ if (!$protected){
+ my $cmd = &$rbd_cmd($scfg, $storeid, 'snap', 'protect', $newname, '--snap', $snap);
+ run_command($cmd, errmsg => "rbd protect $newname snap $snap' error", errfunc => sub {});
+ }
+
+ return $newvolname;
+