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4101 metaslab_debug should allow for fine-grained control
4102 space_maps should store more information about themselves
4103 space map object blocksize should be increased
4104 ::spa_space no longer works
4105 removing a mirrored log device results in a leaked object
4106 asynchronously load metaslab
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Sebastien Roy <seb@delphix.com>

@@ -18,11 +18,11 @@
  *
  * CDDL HEADER END
  */
 
 /*
- * Copyright (c) 2012 by Delphix. All rights reserved.
+ * Copyright (c) 2013 by Delphix. All rights reserved.
  * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
  * Copyright (c) 2013, Joyent, Inc. All rights reserved.
  */
 
 #ifdef _KERNEL

@@ -162,6 +162,9 @@
             "org.illumos:lz4_compress", "lz4_compress",
             "LZ4 compression algorithm support.", B_FALSE, B_FALSE, NULL);
         zfeature_register(SPA_FEATURE_MULTI_VDEV_CRASH_DUMP,
             "com.joyent:multi_vdev_crash_dump", "multi_vdev_crash_dump",
             "Crash dumps to multiple vdev pools.", B_FALSE, B_FALSE, NULL);
+        zfeature_register(SPA_FEATURE_SPACEMAP_HISTOGRAM,
+            "com.delphix:spacemap_histogram", "spacemap_histogram",
+            "Spacemaps maintain space histograms.", B_TRUE, B_FALSE, NULL);
 }