X-Git-Url: http://git.datanom.net/omvzfs.git/blobdiff_plain/63617ac219787335b77eb40d276b41546420c763..9b2acb8e1c4e91bf2d855b1f96efa0464e212eb9:/src/Zvol.php diff --git a/src/Zvol.php b/src/Zvol.php index 286d6ab..e35af5a 100644 --- a/src/Zvol.php +++ b/src/Zvol.php @@ -1,4 +1,7 @@ $features - * @access private - */ - private $_features; - - // Associations - // Operations - /** - * XXX - * - * @return string XXX - * @access public - */ - public function getName() { - trigger_error('Not Implemented!', E_USER_WARNING); - } - - /** - * XXX - * - * @return int XXX - * @access public - */ - public function getSize() { - trigger_error('Not Implemented!', E_USER_WARNING); - } - - /** - * XXX - * - * @return string XXX - * @access public - */ - public function getMountPoint() { - trigger_error('Not Implemented!', E_USER_WARNING); - } - - /** - * XXX - * - * @return list XXX - * @access public - */ - public function getFeatures() { - trigger_error('Not Implemented!', E_USER_WARNING); - } - - /** - * XXX - * - * @param $list XXX - * @return void XXX - * @access public - */ - public function setFeatures($list) { - trigger_error('Not Implemented!', E_USER_WARNING); - } + // Attributes + + /** + * Name of Zvol + * + * @var string $name + * @access private + */ + private $name; + /** + * Size of Zvol + * + * @var string $size + * @access private + */ + private $size; + + /** + * Array with properties assigned to the Zvol + * + * @var array $properties + * @access private + */ + private $properties; + + /** + * Array with Snapshots associated to the Zvol + * + * @var array $snapshots + * @access private + */ + private $snapshots; + + // 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) { + $zvol_exists = true; + $this->name = $name; + $cmd = "zfs list -H -t volume " . $name . " 2>&1"; + try { + $this->exec($cmd, $out, $res); + $this->updateAllProperties(); + $this->size = $this->properties["volsize"]["value"]; + } + catch (OMVModuleZFSException $e) { + $zvol_exists = false; + } + if ($zvol_exists) { + $cmd = "zfs list -r -d 1 -o name -H -t snapshot " . $name . " 2>&1"; + $this->exec($cmd, $out2, $res2); + foreach ($out2 as $line2) { + $this->snapshots[$line2] = new OMVModuleZFSSnapshot($line2); + } + } + + } + + /** + * 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 $property Name of the property to fetch + * @return array The returned array with the property. The property is an associative array with + * two elements, and . + * @access public + */ + public function getProperty($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 + * and + * @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; + } + + /** + * Get all Snapshots associated with the Zvol + * + * @return array $snapshots + * @access public + */ + public function getSnapshots() { + if (isset($this->snapshots)) { + return $this->snapshots; + } else { + return array(); + } + } + + /** + * 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 . " 2>&1"; + $this->exec($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 . " 2>&1"; + $this->exec($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 . " 2>&1"; + $this->exec($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 . " 2>&1"; + $this->exec($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); + } + + /** + * Creates a Snapshot and adds it to the existing list of snapshots associated + * with the Zvol. + * + * @param string $snap_name Name of the Snapshot to create. + * @param array $properties Optional array of properties to set on Snapshot + * @return void + * @access public + */ + public function addSnapshot($snap_name, array $properties = null) { + $snap = new OMVModuleZFSSnapshot($snap_name); + $snap->create($properties); + $this->snapshots[$snap_name] = $snap; + } + + /** + * Destroys a Snapshot on commandline and removes it from the Zvol. + * + * @param string $snap_name Name of the Snapshot to delete. + * @return void + * @access public + */ + public function deleteSnapshot($snap_name) { + $this->snapshots[$snap_name]->destroy(); + unset($this->snapshots[$snap_name]); + } + + /** + * 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; + } } ?>