diff --git a/include/os/freebsd/spl/sys/cmn_err.h b/include/os/freebsd/spl/sys/cmn_err.h
index a8f9a88247cd..dd3da7da205a 100644
--- a/include/os/freebsd/spl/sys/cmn_err.h
+++ b/include/os/freebsd/spl/sys/cmn_err.h
@@ -1,82 +1,115 @@
 /*
  * CDDL HEADER START
  *
  * The contents of this file are subject to the terms of the
  * Common Development and Distribution License, Version 1.0 only
  * (the "License").  You may not use this file except in compliance
  * with the License.
  *
  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  * or https://opensource.org/licenses/CDDL-1.0.
  * See the License for the specific language governing permissions
  * and limitations under the License.
  *
  * When distributing Covered Code, include this CDDL HEADER in each
  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  * If applicable, add the following below this CDDL HEADER, with the
  * fields enclosed by brackets "[]" replaced with your own identifying
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  */
 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
 /*	  All Rights Reserved  	*/
 
 
 /*
  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
 #ifndef _SYS_CMN_ERR_H
 #define	_SYS_CMN_ERR_H
 
 #if !defined(_ASM)
 #include <sys/_stdarg.h>
+#include <sys/atomic.h>
 #endif
 
 #ifdef	__cplusplus
 extern "C" {
 #endif
 
 /* Common error handling severity levels */
 
 #define	CE_CONT		0	/* continuation		*/
 #define	CE_NOTE		1	/* notice		*/
 #define	CE_WARN		2	/* warning		*/
 #define	CE_PANIC	3	/* panic		*/
 #define	CE_IGNORE	4	/* print nothing	*/
 
 #ifndef _ASM
 
 extern void cmn_err(int, const char *, ...)
     __attribute__((format(printf, 2, 3)));
 
 extern void vzcmn_err(zoneid_t, int, const char *, __va_list)
     __attribute__((format(printf, 3, 0)));
 
 extern void vcmn_err(int, const char *, __va_list)
     __attribute__((format(printf, 2, 0)));
 
 extern void zcmn_err(zoneid_t, int, const char *, ...)
     __attribute__((format(printf, 3, 4)));
 
 extern void vzprintf(zoneid_t, const char *, __va_list)
     __attribute__((format(printf, 2, 0)));
 
 extern void zprintf(zoneid_t, const char *, ...)
     __attribute__((format(printf, 2, 3)));
 
 extern void vuprintf(const char *, __va_list)
     __attribute__((format(printf, 1, 0)));
 
 extern void panic(const char *, ...)
     __attribute__((format(printf, 1, 2), __noreturn__));
 
+#define	cmn_err_once(ce, ...)				\
+{							\
+	static volatile uint32_t printed = 0;		\
+	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
+		cmn_err(ce, __VA_ARGS__);		\
+	}						\
+}
+
+#define	vcmn_err_once(ce, fmt, ap)			\
+{							\
+	static volatile uint32_t printed = 0;		\
+	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
+		vcmn_err(ce, fmt, ap);			\
+	}						\
+}
+
+#define	zcmn_err_once(zone, ce, ...)			\
+{							\
+	static volatile uint32_t printed = 0;		\
+	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
+		zcmn_err(zone, ce, __VA_ARGS__);	\
+	}						\
+}
+
+#define	vzcmn_err_once(zone, ce, fmt, ap)		\
+{							\
+	static volatile uint32_t printed = 0;		\
+	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
+		vzcmn_err(zone, ce, fmt, ap);		\
+	}						\
+}
+
 #endif /* !_ASM */
 
 #ifdef	__cplusplus
 }
 #endif
 
 #endif	/* _SYS_CMN_ERR_H */
diff --git a/include/os/linux/spl/sys/cmn_err.h b/include/os/linux/spl/sys/cmn_err.h
index 161bcf9b3a46..7ca2a86be9e8 100644
--- a/include/os/linux/spl/sys/cmn_err.h
+++ b/include/os/linux/spl/sys/cmn_err.h
@@ -1,48 +1,65 @@
 /*
  *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
  *  Copyright (C) 2007 The Regents of the University of California.
  *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
  *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
  *  UCRL-CODE-235197
  *
  *  This file is part of the SPL, Solaris Porting Layer.
  *
  *  The SPL is free software; you can redistribute it and/or modify it
  *  under the terms of the GNU General Public License as published by the
  *  Free Software Foundation; either version 2 of the License, or (at your
  *  option) any later version.
  *
  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  *  for more details.
  *
  *  You should have received a copy of the GNU General Public License along
  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #ifndef _SPL_CMN_ERR_H
 #define	_SPL_CMN_ERR_H
 
 #if defined(_KERNEL) && defined(HAVE_STANDALONE_LINUX_STDARG)
 #include <linux/stdarg.h>
 #else
 #include <stdarg.h>
 #endif
+#include <sys/atomic.h>
 
 #define	CE_CONT		0 /* continuation */
 #define	CE_NOTE		1 /* notice */
 #define	CE_WARN		2 /* warning */
 #define	CE_PANIC	3 /* panic */
 #define	CE_IGNORE	4 /* print nothing */
 
 extern void cmn_err(int, const char *, ...)
     __attribute__((format(printf, 2, 3)));
 extern void vcmn_err(int, const char *, va_list)
     __attribute__((format(printf, 2, 0)));
 extern void vpanic(const char *, va_list)
     __attribute__((format(printf, 1, 0), __noreturn__));
 
 #define	fm_panic	panic
 
+#define	cmn_err_once(ce, ...)				\
+{							\
+	static volatile uint32_t printed = 0;		\
+	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
+		cmn_err(ce, __VA_ARGS__);		\
+	}						\
+}
+
+#define	vcmn_err_once(ce, fmt, ap)			\
+{							\
+	static volatile uint32_t printed = 0;		\
+	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
+		vcmn_err(ce, fmt, ap);			\
+	}						\
+}
+
 #endif /* SPL_CMN_ERR_H */
diff --git a/lib/libspl/include/sys/cmn_err.h b/lib/libspl/include/sys/cmn_err.h
index f4db082c22a4..6c71dcb8ec13 100644
--- a/lib/libspl/include/sys/cmn_err.h
+++ b/lib/libspl/include/sys/cmn_err.h
@@ -1,30 +1,64 @@
 /*
  * CDDL HEADER START
  *
  * The contents of this file are subject to the terms of the
  * Common Development and Distribution License, Version 1.0 only
  * (the "License").  You may not use this file except in compliance
  * with the License.
  *
  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  * or https://opensource.org/licenses/CDDL-1.0.
  * See the License for the specific language governing permissions
  * and limitations under the License.
  *
  * When distributing Covered Code, include this CDDL HEADER in each
  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  * If applicable, add the following below this CDDL HEADER, with the
  * fields enclosed by brackets "[]" replaced with your own identifying
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  */
 /*
  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
 #ifndef _LIBSPL_SYS_CMN_ERR_H
 #define	_LIBSPL_SYS_CMN_ERR_H
 
+#include <atomic.h>
+
+#define	cmn_err_once(ce, ...)				\
+{							\
+	static volatile uint32_t printed = 0;		\
+	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
+		cmn_err(ce, __VA_ARGS__);		\
+	}						\
+}
+
+#define	vcmn_err_once(ce, fmt, ap)			\
+{							\
+	static volatile uint32_t printed = 0;		\
+	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
+		vcmn_err(ce, fmt, ap);			\
+	}						\
+}
+
+#define	zcmn_err_once(zone, ce, ...)			\
+{							\
+	static volatile uint32_t printed = 0;		\
+	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
+		zcmn_err(zone, ce, __VA_ARGS__);	\
+	}						\
+}
+
+#define	vzcmn_err_once(zone, ce, fmt, ap)		\
+{							\
+	static volatile uint32_t printed = 0;		\
+	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
+		vzcmn_err(zone, ce, fmt, ap);		\
+	}						\
+}
+
 #endif