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Date:      Tue, 19 Sep 2017 08:43:16 +0000 (UTC)
From:      Andriy Gapon <avg@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org
Subject:   svn commit: r323746 - stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs
Message-ID:  <201709190843.v8J8hG8x042700@repo.freebsd.org>

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Author: avg
Date: Tue Sep 19 08:43:16 2017
New Revision: 323746
URL: https://svnweb.freebsd.org/changeset/base/323746

Log:
  MFC r321471: spa_import_rootpool should be able to handle an imported root pool
  
  That is required to support reboot -r with a new root filesystem being
  on an already imported pool.
  
  PR:		210721

Modified:
  stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c
==============================================================================
--- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c	Tue Sep 19 08:39:54 2017	(r323745)
+++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c	Tue Sep 19 08:43:16 2017	(r323746)
@@ -4275,6 +4275,16 @@ spa_import_rootpool(const char *name)
 
 		if ((spa = spa_lookup(pname)) != NULL) {
 			/*
+			 * The pool could already be imported,
+			 * e.g., after reboot -r.
+			 */
+			if (spa->spa_state == POOL_STATE_ACTIVE) {
+				mutex_exit(&spa_namespace_lock);
+				nvlist_free(config);
+				return (0);
+			}
+
+			/*
 			 * Remove the existing root pool from the namespace so
 			 * that we can replace it with the correct config
 			 * we just read in.



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