3956 ::vdev -r should work with pipelines
3957 ztest should update the cachefile before killing itself
3958 multiple scans can lead to partial resilvering
3959 ddt entries are not always resilvered
3960 dsl_scan can skip over dedup-ed blocks if physical birth != logical birth
3961 freed gang blocks are not resilvered and can cause pool to suspend
3962 ztest should print out zfs debug buffer before exiting
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>

*** 20,30 ****
   */
  
  /*
   * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
!  * Copyright (c) 2012 by Delphix. All rights reserved.
   */
  
  #include <sys/spa.h>
  #include <sys/fm/fs/zfs.h>
  #include <sys/spa_impl.h>
--- 20,30 ----
   */
  
  /*
   * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
!  * Copyright (c) 2013 by Delphix. All rights reserved.
   */
  
  #include <sys/spa.h>
  #include <sys/fm/fs/zfs.h>
  #include <sys/spa_impl.h>
*** 196,206 ****
          return (err);
  }
  
  /*
   * Synchronize pool configuration to disk.  This must be called with the
!  * namespace lock held.
   */
  void
  spa_config_sync(spa_t *target, boolean_t removing, boolean_t postsysevent)
  {
          spa_config_dirent_t *dp, *tdp;
--- 196,211 ----
          return (err);
  }
  
  /*
   * Synchronize pool configuration to disk.  This must be called with the
!  * namespace lock held. Synchronizing the pool cache is typically done after
!  * the configuration has been synced to the MOS. This exposes a window where
!  * the MOS config will have been updated but the cache file has not. If
!  * the system were to crash at that instant then the cached config may not
!  * contain the correct information to open the pool and an explicity import
!  * would be required.
   */
  void
  spa_config_sync(spa_t *target, boolean_t removing, boolean_t postsysevent)
  {
          spa_config_dirent_t *dp, *tdp;