<?php
+require_once("Exception.php");
+require_once("VdevType.php");
+require_once("openmediavault/util.inc");
/**
- * XXX detailed description
+ * Contains a Vdev
*
- * @author XXX
- * @version XXX
- * @copyright XXX
+ * @author Michael Rasmussen
+ * @version 0.1
+ * @copyright Michael Rasmussen <mir@datanom.net>
*/
-class Vdev {
+class OMVModuleZFSVdev {
// Attributes
/**
- * XXX
+ * Array holding disks
*
- * @var list<Disk> $disks
+ * @var array $disks
* @access private
*/
- protected $_disks;
+ private $disks;
+
+ /**
+ * Name of pool
+ *
+ * @var string $pool pool name
+ * @access private
+ */
+ private $pool;
+
+ /**
+ * This vdev type
+ *
+ * @var OMVModuleZFSVdevType $type Vdev type
+ * @access private
+ */
+ private $type;
// Associations
// Operations
+ /**
+ * Constructor
+ *
+ * @param $pool pool this mirror belongs to
+ * @throws OMVModuleZFSException
+ */
+
+ public function __construct($pool, OMVModuleZFSVdevType $type, array $disks) {
+ switch ($type) {
+ case OMVModuleZFSVdevType::OMVMODULEZFSPLAIN:
+ break;
+ case OMVModuleZFSVdevType::OMVMODULEZFSMIRROR:
+ if (count($disks) < 2)
+ throw new OMVModuleZFSException("A mirror must contain at least 2 disks");
+ break;
+ case OMVModuleZFSVdevType::OMVMODULEZFSRAIDZ1:
+ if (count($disks) < 3)
+ throw new OMVModuleZFSException("A Raidz1 must contain at least 3 disks");
+ break;
+ case OMVModuleZFSVdevType::OMVMODULEZFSRAIDZ2:
+ if (count($disks) < 4)
+ throw new OMVModuleZFSException("A Raidz2 must contain at least 4 disks");
+ break;
+ case OMVModuleZFSVdevType::OMVMODULEZFSRAIDZ3:
+ if (count($disks) < 5)
+ throw new OMVModuleZFSException("A Raidz3 must contain at least 5 disks");
+ break;
+ }
+ $this->pool = $pool;
+ $this->disks = $disks;
+ $this->type = $type;
+ }
+
+ /**
+ * Helper function to execute an external program.
+ * @param command The command that will be executed.
+ * @param output If the output argument is present, then the specified
+ * array will be filled with every line of output from the command.
+ * Trailing whitespace, such as \n, is not included in this array.
+ * @return The exit code of the command.
+ * @throws E_EXEC_FAILED
+ */
+ private function exec($command, &$output = NULL) {
+ OMVUtil::exec($command, $output, $result);
+ return $result;
+ }
+
+ private function safeExec($disk, $add = true, $change = false) {
+ $result = 1;
+
+ if ($add) {
+ if ($change || $this->type == OMVModuleZFSVdevType::OMVMODULEZFSMIRROR) {
+ $disk1 = $this->disks[0];
+ $result = exec("zpool attach {$this->pool} $disk1 $disk", $err);
+ } else {
+ $result = exec("zpool add {$this->pool} $disk", $err);
+ }
+ } else {
+ if ($this->type == OMVModuleZFSVdevType::OMVMODULEZFSMIRROR) {
+ $disk1 = $this->disks[0];
+ if (($res = exec("zpool offline {$this->pool} $disk", $err)) > 0)
+ $result = $res;
+ else
+ $result = exec("zpool detach {$this->pool} $disk", $err);
+ } else {
+ $result = 1;
+ $err = "Cannot remove $disk from {$this->pool}";
+ }
+ }
+
+ return ($result) ? $err : null;
+ }
+
/**
- * XXX
+ * Add a disk to this Vdev
*
- * @param Disk $disk XXX
- * @return void XXX
+ * @param $disk the disk
+ * @throws OMVModuleZFSException
* @access public
*/
- public function addDisk($disk) {
- trigger_error('Not Implemented!', E_USER_WARNING);
+ public function addDisk($disk, $changeType = false) {
+ if ($this->type != OMVModuleZFSVdevType::OMVMODULEZFSPLAIN ||
+ $this->type != OMVModuleZFSVdevType::OMVMODULEZFSMIRROR)
+ throw new OMVModuleZFSException("A Raidz Vdev cannot be changed");
+
+ if (in_array($disk, $this->disks))
+ throw new OMVModuleZFSException("$disk: Already part of Vdev");
+
+ if ($this->type == OMVModuleZFSVdevType::OMVMODULEZFSPLAIN &&
+ count($this->disks) < 2 && $changeType) {
+ $this->type = OMVModuleZFSVdevType::OMVMODULEZFSMIRROR;
+ }
+
+ if (($err = safeExec($disk, true, $changeType)) != null)
+ throw new OMVModuleZFSException($err);
+ else
+ array_push($this->disks, $disk);
}
/**
- * XXX
+ * Remove a disk from Vdev
*
- * @param Disk $disk XXX
- * @return void XXX
+ * @param $disk disk to remove
+ * @throws OMVModuleZFSException
* @access public
*/
- public abstract function removeDisk($disk) {
- trigger_error('Not Implemented!', E_USER_WARNING);
- }
+ public function removeDisk($disk, $changeType = false) {
+ $new_disks = array();
+
+ if ($this->type != OMVModuleZFSVdevType::OMVMODULEZFSMIRROR)
+ throw new OMVModuleZFSException("Only inactive hot spares," .
+ "cache, top-level, or log devices can be removed");
+
+ if (count($this->disks) < 3 && ! $changeType)
+ throw new OMVModuleZFSException("A mirror must contain at least 2 disks");
+
+ if (! in_array($disk, $this->disks))
+ throw new OMVModuleZFSException("$disk: Not part of Vdev");
+
+ if (($err = safeExec($disk, false, $changeType)) != null)
+ throw new OMVModuleZFSException($err);
+ else {
+ foreach ($this->disks as $_disk) {
+ if (strcmp($_disk, $disk) != 0)
+ array_push($new_disks, $_disk);
+ }
+ }
+
+ $this->disks = $new_disks;
+ }
/**
- * XXX
+ * Get disk array
*
- * @return list<Disk> XXX
+ * @return array with disks
* @access public
*/
public function getDisks() {
- trigger_error('Not Implemented!', E_USER_WARNING);
+ return $this->disks;
+ }
+
+ /**
+ * Get pool
+ *
+ * @return string pool
+ * @access public
+ */
+ public function getPool() {
+ return $pool;
+ }
+
+ /**
+ * Get type
+ *
+ * @return OMVModuleZFSVdevType
+ * @access public
+ */
+ public function getType() {
+ return $type;
}
}
projects / omvzfs.git / blobdiff