Author: mav
Date: Wed May  2 02:41:09 2018
New Revision: 333158
URL: https://svnweb.freebsd.org/changeset/base/333158

Log:
  Clean enclosure_table when resetting num_enc_table_entries to zero.
  
  Garbage left there by r325363 in some scenarios found to lead to later
  enclosure mapping failures.
  
  MFC after:    1 week
  Sponsored by: iXsystems, Inc.

Modified:
  head/sys/dev/mpr/mpr_mapping.c

Modified: head/sys/dev/mpr/mpr_mapping.c
==============================================================================
--- head/sys/dev/mpr/mpr_mapping.c      Wed May  2 01:32:34 2018        
(r333157)
+++ head/sys/dev/mpr/mpr_mapping.c      Wed May  2 02:41:09 2018        
(r333158)
@@ -2385,6 +2385,8 @@ fail:
                 * sc->mapping_table volumes tooi
                 */
        }
+       for (enc_idx = 0; enc_idx < sc->num_enc_table_entries; enc_idx++)
+               _mapping_clear_enc_entry(sc->enclosure_table + enc_idx);
        sc->num_enc_table_entries = 0;
        return (false);
 }
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