2882 implement libzfs_core
2883 changing "canmount" property to "on" should not always remount dataset
2900 "zfs snapshot" should be able to create multiple, arbitrary snapshots at once
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Chris Siden <christopher.siden@delphix.com>
Reviewed by: Garrett D'Amore <garrett@damore.org>
Reviewed by: Bill Pijewski <wdp@joyent.com>
Reviewed by: Dan Kruchinin <dan.kruchinin@gmail.com>

*** 18,27 ****
--- 18,28 ----
   *
   * CDDL HEADER END
   */
  /*
   * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+  * Copyright (c) 2012 by Delphix. All rights reserved.
   */
  
  /* Portions Copyright 2010 Robert Milkowski */
  
  #include <sys/types.h>
*** 2246,2258 ****
  
                  VERIFY(0 == sa_set_sa_object(os, sa_obj));
                  sa_register_update_callback(os, zfs_sa_upgrade);
          }
  
!         spa_history_log_internal(LOG_DS_UPGRADE,
!             dmu_objset_spa(os), tx, "oldver=%llu newver=%llu dataset = %llu",
!             zfsvfs->z_version, newvers, dmu_objset_id(os));
  
          dmu_tx_commit(tx);
  
          zfsvfs->z_version = newvers;
  
--- 2247,2258 ----
  
                  VERIFY(0 == sa_set_sa_object(os, sa_obj));
                  sa_register_update_callback(os, zfs_sa_upgrade);
          }
  
!         spa_history_log_internal_ds(dmu_objset_ds(os), "upgrade", tx,
!             "from %llu to %llu", zfsvfs->z_version, newvers);
  
          dmu_tx_commit(tx);
  
          zfsvfs->z_version = newvers;