diff --git a/README.md b/README.md
index b11e834..9b9c388 100644
--- a/README.md
+++ b/README.md
@@ -163,7 +163,7 @@ GET m=SphinxQL
 
 * [x] CSS only, JS-less interface
 * [x] Unique host ident icons
-* [x] Content genre tabs (#1)
+* [x] Content MIME tabs (#1)
 * [x] Page index explorer
   + [x] Meta
   + [x] Snaps history
@@ -225,8 +225,14 @@ GET m=SphinxQL
 * [x] help
 * [x] crawl
 * [x] clean
-* [x] snap
-  + [x] reindex
+* [x] hostPageSnap
+  + [x] repair
+      + [x] _sync DB-FS relations_
+        + [x] _FTP_
+        + [ ] _localhost (not tested)_
+      + [x] _delete FS missed in the DB_
+        + [x] _FTP_
+        + [ ] _localhost_
 * [x] hostPageDom
   + [x] generate
   + [x] truncate
diff --git a/cli/yggo.php b/cli/yggo.php
index a00cc64..b84c2a1 100644
--- a/cli/yggo.php
+++ b/cli/yggo.php
@@ -1,28 +1,50 @@
 <?php
 
+// Load system dependencies
+require_once(__DIR__ . '/../config/app.php');
+require_once(__DIR__ . '/../library/cli.php');
+require_once(__DIR__ . '/../library/mysql.php');
+require_once(__DIR__ . '/../library/filter.php');
+require_once(__DIR__ . '/../library/ftp.php');
+require_once(__DIR__ . '/../library/vendor/simple_html_dom.php');
+
 // CLI only to prevent https server connection timeout
 if (php_sapi_name() != 'cli') {
 
   CLI::danger(_('supported command line interface only'));
+  CLI::break();
   exit;
 }
 
 // Lock multi-thread execution
-$semaphore = sem_get(crc32('cli.yggo'), 1);
+$semaphore = sem_get(crc32('crontab.crawler'), 1);
 
 if (false === sem_acquire($semaphore, true)) {
 
-  CLI::danger(_('Process locked by another thread.'));
+  CLI::danger(_('process locked by another thread.'));
+  CLI::break();
   exit;
 }
 
-// Load system dependencies
-require_once(__DIR__ . '/../config/app.php');
-require_once(__DIR__ . '/../library/cli.php');
-require_once(__DIR__ . '/../library/mysql.php');
-require_once(__DIR__ . '/../library/filter.php');
-require_once(__DIR__ . '/../library/ftp.php');
-require_once(__DIR__ . '/../library/vendor/simple_html_dom.php');
+// Stop CLI execution on cleaner process running
+$semaphore = sem_get(crc32('crontab.cleaner'), 1);
+
+if (false === sem_acquire($semaphore, true)) {
+
+  CLI::danger(_('stop crontab.cleaner is running in another thread.'));
+  CLI::break();
+  exit;
+}
+
+// Stop CLI execution on crawler process running
+$semaphore = sem_get(crc32('crontab.crawler'), 1);
+
+if (false === sem_acquire($semaphore, true)) {
+
+  CLI::danger(_('stop crontab.crawler is running in another thread.'));
+  CLI::break();
+  exit;
+}
 
 // Connect database
 $db = new MySQL(DB_HOST, DB_PORT, DB_NAME, DB_USERNAME, DB_PASSWORD);
@@ -49,17 +71,20 @@ switch ($argv[1]) {
     CLI::notice(_('cleaner queue step completed.'));
 
   break;
-  case 'snap':
+  case 'hostPageSnap':
 
     if (empty($argv[2])) {
-      CLI::danger(_('snap method requires action argument'));
+
+      CLI::danger(_('hostPageSnap method requires action argument'));
+      CLI::break();
+      exit;
     }
 
     switch ($argv[2]) {
 
-      case 'reindex':
+      case 'repair':
 
-        // Scan for new files/storages
+        // Normalize & cleanup DB
         CLI::notice(_('scan database registry for missed snap files...'));
 
         foreach ($db->getHosts() as $host) {
@@ -74,20 +99,21 @@ switch ($argv[1]) {
               $snapPath = chunk_split($hostPage->hostPageId, 1, '/');
 
               // Check file exists
-              foreach (json_decode(SNAP_STORAGE) as $name => $storages) {
+              foreach (json_decode(SNAP_STORAGE) as $hostPageSnapStorageName => $storages) {
 
                 foreach ($storages as $i => $storage) {
 
                   // Generate storage id
-                  $crc32name = crc32(sprintf('%s.%s', $name, $i));
+                  $crc32name = crc32(sprintf('%s.%s', $hostPageSnapStorageName, $i));
 
-                  switch ($name) {
+                  switch ($hostPageSnapStorageName) {
 
                     case 'localhost':
 
-                      $filename = $storage->directory . $snapPath . $hostPageSnap->timeAdded . '.zip';
+                      /* @TODO implemented, not tested
+                      $hostPageSnapFilename = $storage->directory . $snapPath . $hostPageSnap->timeAdded . '.zip';
 
-                      if (file_exists($filename)) {
+                      if (file_exists($hostPageSnapFilename)) {
 
                         $snapFilesExists = true;
 
@@ -95,14 +121,15 @@ switch ($argv[1]) {
 
                           if ($db->addHostPageSnapStorage($hostPageSnap->hostPageSnapId, $crc32name, $hostPageSnap->timeAdded)) {
 
-                            CLI::warning(sprintf(_('register snap #%s file: %s storage: %s index: %s;'), $hostPageSnap->hostPageSnapId, $filename, $name, $i));
+                            CLI::warning(sprintf(_('register snap #%s file: %s storage: %s index: %s;'), $hostPageSnap->hostPageSnapId, $hostPageSnapFilename, $hostPageSnapStorageName, $i));
                           }
 
                         } else {
 
-                          CLI::success(sprintf(_('skip related snap #%s file: %s storage: %s index: %s;'), $hostPageSnap->hostPageSnapId, $filename, $name, $i));
+                          CLI::success(sprintf(_('skip related snap #%s file: %s storage: %s index: %s;'), $hostPageSnap->hostPageSnapId, $hostPageSnapFilename, $hostPageSnapStorageName, $i));
                         }
                       }
+                      */
 
                     break;
 
@@ -112,9 +139,9 @@ switch ($argv[1]) {
 
                       if ($ftp->connect($storage->host, $storage->port, $storage->username, $storage->password, $storage->directory, $storage->timeout, $storage->passive)) {
 
-                        $filename = 'hp/' . $snapPath . $hostPageSnap->timeAdded . '.zip';
+                        $hostPageSnapFilename = 'hp/' . $snapPath . $hostPageSnap->timeAdded . '.zip';
 
-                        if ($ftp->size($filename)) {
+                        if ($ftp->size($hostPageSnapFilename)) {
 
                           $snapFilesExists = true;
 
@@ -122,13 +149,20 @@ switch ($argv[1]) {
 
                             if ($db->addHostPageSnapStorage($hostPageSnap->hostPageSnapId, $crc32name, $hostPageSnap->timeAdded)) {
 
-                              CLI::warning(sprintf(_('register snap #%s file: %s storage: %s index: %s;'), $hostPageSnap->hostPageSnapId, $filename, $name, $i));
+                              CLI::warning(sprintf(_('register snap #%s file: %s storage: %s index: %s;'), $hostPageSnap->hostPageSnapId, $hostPageSnapFilename, $hostPageSnapStorageName, $i));
                             }
                           } else {
 
-                            CLI::success(sprintf(_('skip related snap #%s file: %s storage: %s index: %s;'), $hostPageSnap->hostPageSnapId, $filename, $name, $i));
+                            CLI::success(sprintf(_('skip related snap #%s file: %s storage: %s index: %s;'), $hostPageSnap->hostPageSnapId, $hostPageSnapFilename, $hostPageSnapStorageName, $i));
                           }
                         }
+
+                      // Prevent snap deletion from registry on FTP connection lost
+                      } else {
+
+                        CLI::danger(sprintf(_('could not connect to storage %s index %s. operation stopped to prevent the data lose.'), $hostPageSnapStorageName, $i));
+                        CLI::break();
+                        exit;
                       }
 
                       $ftp->close();
@@ -154,7 +188,7 @@ switch ($argv[1]) {
                   $db->deleteHostPageSnapStorages($hostPageSnap->hostPageSnapId);
                   $db->deleteHostPageSnap($hostPageSnap->hostPageSnapId);
 
-                  CLI::danger(sprintf(_('delete snap index: #%s file not found in the any of storage;'), $hostPageSnap->hostPageSnapId));
+                  CLI::warning(sprintf(_('delete snap index: #%s file not found in the any of storage;'), $hostPageSnap->hostPageSnapId));
 
                   $db->commit();
 
@@ -169,23 +203,70 @@ switch ($argv[1]) {
           }
         }
 
-        CLI::notice(_('optimize database tables...'));
+        // Cleanup FS
+        CLI::notice(_('scan storage for snap files missed in the DB...'));
 
-        $db->optimize();
+        foreach (json_decode(SNAP_STORAGE) as $hostPageSnapStorageName => $storages) {
 
-        CLI::success(_('tables successfully optimized!'));
+          foreach ($storages as $i => $storage) {
 
-        CLI::notice(_('scan storage locations for snap files not registered in the DB...'));
+            switch ($hostPageSnapStorageName) {
 
-        CLI::success(_('snap index successfully updated!'));
+              case 'localhost':
 
-        // Cleanup FS items on missed DB registry
-        // @TODO
+                // @TODO
+
+              break;
+
+              case 'ftp':
+
+                $ftp = new Ftp();
+
+                if ($ftp->connect($storage->host, $storage->port, $storage->username, $storage->password, $storage->directory, $storage->timeout, $storage->passive)) {
+
+                  foreach ($ftp->nlistr($storage->directory) as $hostPageSnapFilename) {
+
+                    if (false !== preg_match(sprintf('!/hp/([\d/]+)/([\d]+)\.zip$!ui', $storage->directory), $hostPageSnapFilename, $matches)) {
+
+                      if (!empty($matches[1]) && // hostPageSnapId
+                          !empty($matches[2])) { // timeAdded
+
+                        if (!$db->findHostPageSnapByTimeAdded($matches[1], $matches[2])) {
+
+                          if ($ftp->delete($hostPageSnapFilename)) {
+
+                            CLI::warning(sprintf(_('delete snap file: #%s from storage %s index %s not found in registry;'), $hostPageSnapFilename, $hostPageSnapStorageName, $i));
+
+                          } else {
+
+                            CLI::danger(sprintf(_('delete snap file: #%s from storage %s index %s not found in registry;'), $hostPageSnapFilename, $hostPageSnapStorageName, $i));
+                          }
+                        }
+                      }
+                    }
+                  }
+                }
+
+                $ftp->close();
+
+              break;
+            }
+          }
+        }
+
+        CLI::success(_('missed snap files successfully deleted!'));
+
+        // Optimize DB tables
+        CLI::notice(_('optimize database tables...'));
+
+        $db->optimize();
+
+        CLI::success(_('tables successfully optimized!'));
 
       break;
       default:
 
-        CLI::danger(_('undefined action argument'));
+        CLI::danger(_('undefined action argument!'));
     }
 
   break;
@@ -344,8 +425,8 @@ CLI::default('available options:');
 CLI::default('  help                             - this message');
 CLI::default('  crawl                            - execute crawler step in the crontab queue');
 CLI::default('  clean                            - execute cleaner step in the crontab queue');
-CLI::default('  snap reindex                     - sync DB/FS relations');
 CLI::default('  hostPage rank reindex            - generate rank indexes in hostPage table');
+CLI::default('  hostPageSnap repair              - sync DB/FS relations');
 CLI::default('  hostPageDom generate [selectors] - make hostPageDom index based on related hostPage.data field');
 CLI::default('  hostPageDom truncate             - flush hostPageDom table');
 CLI::break();
diff --git a/config/app.php.txt b/config/app.php.txt
index 3e56d50..473140a 100644
--- a/config/app.php.txt
+++ b/config/app.php.txt
@@ -92,15 +92,15 @@ define('MEMCACHED_PORT', 11211);
  */
 define('SNAP_STORAGE', json_encode((object)
         [
-                'localhost' => [
+                'localhost' => [ // @TODO see https://github.com/YGGverse/YGGo#roadmap
                         [
                                 'directory' => __DIR__ . '/../storage/snap/hp/',
                                 'quota'     => [
                                         'mime' => false,
                                         'size' => 10000000024, // @TODO
-                                        'request' => [
+                                        'request' => [ // @TODO
                                                 'download' => [
-                                                        'size'    => 10000024, // @TODO
+                                                        'size'    => 10000024,
                                                         'seconds' => 60*60
                                                 ]
                                         ]
@@ -120,9 +120,9 @@ define('SNAP_STORAGE', json_encode((object)
                                 'quota'     => [
                                         'mime' => 'text/html,application/xhtml+xml,text/plain,image/webp,image/png,image/gif,image/jpeg,image/ico',
                                         'size' => 10000000024, // @TODO
-                                        'request' => [
+                                        'request' => [ // @TODO
                                                 'download' => [
-                                                        'size'    => 10000024, // @TODO
+                                                        'size'    => 10000024,
                                                         'seconds' => 60*60
                                                 ]
                                         ]
diff --git a/library/ftp.php b/library/ftp.php
index e2472f7..ae949bc 100644
--- a/library/ftp.php
+++ b/library/ftp.php
@@ -84,11 +84,30 @@ class Ftp {
     return false;
   }
 
-  public function list(string $path) {
+  public function nlist(string $path) {
 
     return ftp_nlist($this->_connection, $path);
   }
 
+  public function nlistr(string $path) {
+
+    $result = [];
+
+    foreach ($this->nlist($path) as $line) {
+
+      if (ftp_size($this->_connection, $line) == -1) {
+
+        $result = array_merge($result, $this->nlistr($line));
+
+      } else{
+
+        $result[] = $line;
+      }
+    }
+
+    return $result;
+  }
+
   public function close() {
 
     return ftp_close($this->_connection);
diff --git a/library/mysql.php b/library/mysql.php
index ef39df1..f59e4b1 100644
--- a/library/mysql.php
+++ b/library/mysql.php
@@ -528,6 +528,15 @@ class MySQL {
     return $query->fetch();
   }
 
+  public function findHostPageSnapByTimeAdded(int $hostPageSnapId, int $timeAdded) {
+
+    $query = $this->_db->prepare('SELECT * FROM `hostPageSnap` WHERE `hostPageSnapId` = ? AND `timeAdded` = ? LIMIT 1');
+
+    $query->execute([$hostPageSnapId, $timeAdded]);
+
+    return $query->fetch();
+  }
+
   public function addHostPageSnapDownload(int $hostPageSnapStorageId, string $crc32ip, int $timeAdded) {
 
     $query = $this->_db->prepare('INSERT INTO `hostPageSnapDownload` (`hostPageSnapStorageId`,