diff --git a/WHATS_NEW b/WHATS_NEW
index 3589ebbc3..7fe3a5b06 100644
--- a/WHATS_NEW
+++ b/WHATS_NEW
@@ -1,5 +1,6 @@
 Version 2.02.50 - 
 ================================
+  Store any errno and error messages issued while processing each command.
   Use log_error macro consistently throughout in place of log_err.
 
 Version 2.02.49 - 15th July 2009
diff --git a/daemons/clvmd/lvm-functions.c b/daemons/clvmd/lvm-functions.c
index d559b3a1f..1be07813c 100644
--- a/daemons/clvmd/lvm-functions.c
+++ b/daemons/clvmd/lvm-functions.c
@@ -714,7 +714,7 @@ static void *get_initial_state()
 	return NULL;
 }
 
-static void lvm2_log_fn(int level, const char *file, int line,
+static void lvm2_log_fn(int level, const char *file, int line, int dm_errno,
 			const char *message)
 {
 
@@ -723,7 +723,7 @@ static void lvm2_log_fn(int level, const char *file, int line,
  	   We need to NULL the function ptr otherwise it will just call
 	   back into here! */
 	init_log_fn(NULL);
-	print_log(level, file, line, "%s", message);
+	print_log(level, file, line, dm_errno, "%s", message);
 	init_log_fn(lvm2_log_fn);
 
 	/*
diff --git a/doc/example_cmdlib.c b/doc/example_cmdlib.c
index d251fa92c..1fff36e29 100644
--- a/doc/example_cmdlib.c
+++ b/doc/example_cmdlib.c
@@ -15,7 +15,8 @@
 #include "lvm2cmd.h"
 
 /* All output gets passed to this function line-by-line */
-void test_log_fn(int level, const char *file, int line, const char *format)
+void test_log_fn(int level, int dm_errno, const char *file, int line,
+		 const char *format)
 {
 	/* Extract and process output here rather than printing it */
 
diff --git a/lib/commands/toolcontext.c b/lib/commands/toolcontext.c
index c59ad55c1..dc7aa4063 100644
--- a/lib/commands/toolcontext.c
+++ b/lib/commands/toolcontext.c
@@ -190,7 +190,7 @@ static void _init_logging(struct cmd_context *cmd)
 
 	/* Tell device-mapper about our logging */
 #ifdef DEVMAPPER_SUPPORT
-	dm_log_init(print_log);
+	dm_log_with_errno_init(print_log);
 #endif
 }
 
@@ -1161,6 +1161,7 @@ struct cmd_context *create_toolcontext(unsigned is_long_lived,
 	cmd->current_settings = cmd->default_settings;
 
 	cmd->config_valid = 1;
+	reset_lvm_errno(1);  /* FIXME Move to top when cmd returned on error */
 	return cmd;
 
       error:
@@ -1288,6 +1289,8 @@ int refresh_toolcontext(struct cmd_context *cmd)
 		persistent_filter_dump(cmd->filter);
 
 	cmd->config_valid = 1;
+
+	reset_lvm_errno(1);
 	return 1;
 }
 
@@ -1317,4 +1320,5 @@ void destroy_toolcontext(struct cmd_context *cmd)
 	activation_exit();
 	fin_log();
 	fin_syslog();
+	reset_lvm_errno(0);
 }
diff --git a/lib/log/log.c b/lib/log/log.c
index 1f67b3fed..21163f89e 100644
--- a/lib/log/log.c
+++ b/lib/log/log.c
@@ -38,6 +38,10 @@ static int _already_logging = 0;
 
 static lvm2_log_fn_t _lvm2_log_fn = NULL;
 
+static int _lvm_errno = 0;
+static int _store_errmsg = 0;
+static char *_lvm_errmsg = NULL;
+
 void init_log_fn(lvm2_log_fn_t log_fn)
 {
 	if (log_fn)
@@ -136,13 +140,37 @@ void init_indent(int indent)
 	_indent = indent;
 }
 
-void print_log(int level, const char *file, int line, const char *format, ...)
+void reset_lvm_errno(int store_errmsg)
+{
+	_lvm_errno = 0;
+
+	if (_lvm_errmsg) {
+		dm_free(_lvm_errmsg);
+		_lvm_errmsg = NULL;
+	}
+
+	_store_errmsg = store_errmsg;
+}
+
+int lvm_errno(void)
+{
+	return _lvm_errno;
+}
+
+const char *lvm_errmsg(void)
+{
+	return _lvm_errmsg ? : "";
+}
+
+void print_log(int level, const char *file, int line, int dm_errno,
+	       const char *format, ...)
 {
 	va_list ap;
 	char buf[1024], buf2[4096], locn[4096];
 	int bufused, n;
 	const char *message;
 	const char *trformat;		/* Translated format string */
+	char *newbuf;
 	int use_stderr = level & _LOG_STDERR;
 
 	level &= ~_LOG_STDERR;
@@ -155,7 +183,10 @@ void print_log(int level, const char *file, int line, const char *format, ...)
 
 	trformat = _(format);
 
-	if (_lvm2_log_fn) {
+	if (dm_errno && !_lvm_errno)
+		_lvm_errno = dm_errno;
+
+	if (_lvm2_log_fn || (_store_errmsg && (level == _LOG_ERR))) {
 		va_start(ap, format);
 		n = vsnprintf(buf2, sizeof(buf2) - 1, trformat, ap);
 		va_end(ap);
@@ -168,8 +199,21 @@ void print_log(int level, const char *file, int line, const char *format, ...)
 
 		buf2[sizeof(buf2) - 1] = '\0';
 		message = &buf2[0];
+	}
 
-		_lvm2_log_fn(level, file, line, message);
+	if (_store_errmsg && (level == _LOG_ERR)) {
+		if (!_lvm_errmsg)
+			_lvm_errmsg = dm_strdup(message);
+		else if ((newbuf = dm_realloc(_lvm_errmsg,
+ 					      strlen(_lvm_errmsg) +
+					      strlen(message) + 2))) {
+			_lvm_errmsg = strcat(newbuf, "\n");
+			_lvm_errmsg = strcat(newbuf, message);
+		}
+	}
+
+	if (_lvm2_log_fn) {
+		_lvm2_log_fn(level, file, line, 0, message);
 
 		return;
 	}
diff --git a/lib/log/lvm-logging.h b/lib/log/lvm-logging.h
index d267e2336..a0933dd10 100644
--- a/lib/log/lvm-logging.h
+++ b/lib/log/lvm-logging.h
@@ -16,15 +16,16 @@
 #ifndef _LVM_LOGGING_H
 #define _LVM_LOGGING_H
 
-void print_log(int level, const char *file, int line, const char *format, ...)
-    __attribute__ ((format(printf, 4, 5)));
+void print_log(int level, const char *file, int line, int dm_errno,
+	       const char *format, ...)
+    __attribute__ ((format(printf, 5, 6)));
 
-#define LOG_LINE(l, x...) print_log(l, __FILE__, __LINE__ , ## x)
+#define LOG_LINE(l, x...) print_log(l, __FILE__, __LINE__ , 0, ## x)
 
 #include "log.h"
 
 typedef void (*lvm2_log_fn_t) (int level, const char *file, int line,
-			       const char *message);
+			       int dm_errno, const char *message);
 
 void init_log_fn(lvm2_log_fn_t log_fn);
 
@@ -42,6 +43,9 @@ void init_syslog(int facility);
 void fin_syslog(void);
 
 int error_message_produced(void);
+void reset_lvm_errno(int store_errmsg);
+int lvm_errno(void);
+const char *lvm_errmsg(void);
 
 /* Suppress messages to stdout/stderr (1) or everywhere (2) */
 /* Returns previous setting */
diff --git a/po/pogen.h b/po/pogen.h
index 6ab815451..66940b97a 100644
--- a/po/pogen.h
+++ b/po/pogen.h
@@ -19,8 +19,8 @@
  * different architectures.
  */
 
-#define print_log(level, file, line, format, args...) print_log(format, args)
+#define print_log(level, dm_errno, file, line, format, args...) print_log(format, args)
 #define dm_log(level, file, line, format, args...) dm_log(format, args)
-#define dm_log_with_errno(level, file, line, format, dm_errno, args...) \
-    dm_log(format, args)
+#define dm_log_with_errno(level, dm_errno, file, line, format, args...) \
+    dm_log(level, file, line, format, args)
 
diff --git a/tools/lvmcmdline.c b/tools/lvmcmdline.c
index efd996aee..33e549b1c 100644
--- a/tools/lvmcmdline.c
+++ b/tools/lvmcmdline.c
@@ -1054,6 +1054,8 @@ int lvm_run_command(struct cmd_context *cmd, int argc, char **argv)
 	 */
 	dm_pool_empty(cmd->mem);
 
+	reset_lvm_errno(1);
+
 	return ret;
 }