+ /**
+ * Size of Zvol
+ *
+ * @var string $size
+ * @access private
+ */
+ private $size;
+
+ /**
+ * Array with properties assigned to the Zvol
+ *
+ * @var array $properties
+ * @access private
+ */
+ private $properties;
+
+ // Associations
+ // Operations
+
+ /**
+ * Constructor. If the Zvol already exists in the system the object will be updated with all
+ * associated properties from commandline.
+ *
+ * @param string $name Name of the new Zvol
+ * @return void
+ * @access public
+ */
+ public function __construct($name) {
+ $this->name = $name;
+ $qname = preg_quote($name, '/');
+ $cmd = "zfs list -H -t volume";
+ $this->exec($cmd, $out, $res);
+ foreach ($out as $line) {
+ if (preg_match('/^' . $qname . '\t.*$/', $line)) {
+ $this->updateAllProperties();
+ $this->size = $this->properties["volsize"]["value"];
+ continue;
+ }
+ }
+ }
+
+ /**
+ * Return name of the Zvol
+ *
+ * @return string $name
+ * @access public
+ */
+ public function getName() {
+ return $this->name;
+ }
+
+ /**
+ * Get a single property value associated with the Zvol
+ *
+ * @param string $property Name of the property to fetch
+ * @return array The returned array with the property. The property is an associative array with
+ * two elements, <value> and <source>.
+ * @access public
+ */
+ public function getProperty($property) {
+ return $this->properties["$property"];
+ }
+
+ /**
+ * Get an associative array of all properties associated with the Zvol
+ *
+ * @return array $properties Each entry is an associative array with two elements
+ * <value> and <source>
+ * @access public
+ */
+ public function getProperties() {
+ return $this->properties;
+ }
+
+ /**
+ * Get the total size of the Zvol
+ *
+ * @return string $size
+ * @access public
+ */
+ public function getSize() {
+ return $this->size;
+ }
+
+ /**
+ * Sets a number of Zvol properties. If a property is already set it will be updated with the new value.
+ *
+ * @param array $properties An associative array with properties to set
+ * @return void
+ * @access public
+ */
+ public function setProperties($properties) {
+ foreach ($properties as $newpropertyk => $newpropertyv) {
+ $cmd = "zfs set " . $newpropertyk . "=" . $newpropertyv . " " . $this->name;
+ $this->exec($cmd,$out,$res);
+ $this->updateProperty($newpropertyk);
+ }
+ }
+
+ /**
+ * Get all Zvol properties from commandline and update object properties attribute
+ *
+ * @return void
+ * @access private
+ */
+ private function updateAllProperties() {
+ $cmd = "zfs get -H all " . $this->name;
+ $this->exec($cmd,$out,$res);
+ unset($this->properties);
+ foreach ($out as $line) {
+ $tmpary = preg_split('/\t+/', $line);
+ $this->properties["$tmpary[1]"] = array("value" => $tmpary[2], "source" => $tmpary[3]);
+ }
+ }
+
+ /**
+ * Get single Datset property from commandline and update object property attribute
+ *
+ * @param string $property Name of the property to update
+ * @return void
+ * @access private
+ */
+ private function updateProperty($property) {
+ $cmd = "zfs get -H " . $property . " " . $this->name;
+ $this->exec($cmd,$out,$res);
+ $tmpary = preg_split('/\t+/', $out[0]);
+ $this->properties["$tmpary[1]"] = array("value" => $tmpary[2], "source" => $tmpary[3]);
+ }
+
+ /**
+ * Create a Zvol on commandline. Optionally provide a number of properties to set.
+ *
+ * @param string $size Size of the Zvol that should be created
+ * @param array $properties Properties to set when creatiing the dataset.
+ * @param boolean $sparse Defines if a sparse volume should be created.
+ * @return void
+ * @access public
+ */
+ public function create($size, array $properties = null, $sparse = null) {
+ $cmd = "zfs create -p ";
+ if ((isset($sparse)) && ($sparse == true)) {
+ $cmd .= "-s ";
+ }
+ $cmd .= "-V " . $size . " " . $this->name . " 2>&1";
+ $this->exec($cmd,$out,$res);
+ $this->updateAllProperties();
+ $this->setProperties($properties);
+ $this->size = $this->properties["volsize"]["value"];
+ }
+
+ /**
+ * Destroy the Zvol.
+ *
+ * @return void
+ * @access public
+ */
+ public function destroy() {
+ $cmd = "zfs destroy " . $this->name;
+ $this->exec($cmd,$out,$res);
+ }
+
+ /**
+ * Renames a Zvol
+ *
+ * @param string $newname New name of the Dataset
+ * @return void
+ * @access public
+ */
+ public function rename($newname) {
+ $cmd = "zfs rename -p " . $this->name . " " . $newname . " 2>&1";
+ $this->exec($cmd,$out,$res);
+ $this->name = $newname;
+ }
+
+ /**
+ * Clears a previously set proporty and specifies that it should be
+ * inherited from it's parent.
+ *
+ * @param string $property Name of the property to inherit.
+ * @return void
+ * @access public
+ */
+ public function inherit($property) {
+ $cmd = "zfs inherit " . $property . " " . $this->name . " 2>&1";
+ $this->exec($cmd,$out,$res);
+ $this->updateProperty($property);
+ }
+
+ /**
+ * Helper function to execute a command and throw an exception on error
+ * (requires stderr redirected to stdout for proper exception message).
+ *
+ * @param string $cmd Command to execute
+ * @param array &$out If provided will contain output in an array
+ * @param int &$res If provided will contain Exit status of the command
+ * @return string Last line of output when executing the command
+ * @throws OMVModuleZFSException
+ * @access private
+ */
+ private function exec($cmd, &$out = null, &$res = null) {
+ $tmp = OMVUtil::exec($cmd, $out, $res);
+ if ($res) {
+ throw new OMVModuleZFSException(implode("\n", $out));
+ }
+ return $tmp;
+ }
projects / omvzfs.git / blobdiff