http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=475158
snmpd: keeps complaining on missing /proc/ stats inside vserver flooding syslog

diff -r -u net-snmp-5.4.1~dfsg/agent/mibgroup/hardware/cpu/cpu_linux.c net-snmp-5.4.1~dfsg.puck/agent/mibgroup/hardware/cpu/cpu_linux.c
--- net-snmp-5.4.1~dfsg/agent/mibgroup/hardware/cpu/cpu_linux.c	2007-02-16 00:09:45.000000000 +1300
+++ net-snmp-5.4.1~dfsg.puck/agent/mibgroup/hardware/cpu/cpu_linux.c	2009-05-04 14:35:53.000000000 +1200
@@ -249,7 +249,7 @@
             cpu->pageOut = (unsigned long)pout;
 	} else {
 	    if (first)
-		snmp_log(LOG_ERR, "No page line in %s\n", STAT_FILE);
+		snmp_log(LOG_INFO, "No page line in %s\n", STAT_FILE);
             cpu->pageIn  = cpu->pageOut = 0;
 	}
 	b = strstr(buff, "swap ");
@@ -259,7 +259,7 @@
             cpu->swapOut = (unsigned long)swpout;
 	} else {
 	    if (first)
-		snmp_log(LOG_ERR, "No swap line in %s\n", STAT_FILE);
+		snmp_log(LOG_INFO, "No swap line in %s\n", STAT_FILE);
             cpu->swapIn  = cpu->swapOut = 0;
 	}
     }
diff -r -u net-snmp-5.4.1~dfsg/agent/mibgroup/ucd-snmp/vmstat_linux.c net-snmp-5.4.1~dfsg.puck/agent/mibgroup/ucd-snmp/vmstat_linux.c
--- net-snmp-5.4.1~dfsg/agent/mibgroup/ucd-snmp/vmstat_linux.c	2006-09-15 12:48:50.000000000 +1200
+++ net-snmp-5.4.1~dfsg.puck/agent/mibgroup/ucd-snmp/vmstat_linux.c	2009-05-04 14:35:32.000000000 +1200
@@ -316,7 +316,7 @@
 	    sscanf(b, "page %u %u", pin, pout);
 	else {
 	    if (first)
-		snmp_log(LOG_ERR, "No page line in %s\n", STAT_FILE);
+		snmp_log(LOG_INFO, "No page line in %s\n", STAT_FILE);
 	    *pin = *pout = 0;
 	}
 	b = strstr(buff, "swap ");
@@ -324,7 +324,7 @@
 	    sscanf(b, "swap %u %u", swpin, swpout);
 	else {
 	    if (first)
-		snmp_log(LOG_ERR, "No swap line in %s\n", STAT_FILE);
+		snmp_log(LOG_INFO, "No swap line in %s\n", STAT_FILE);
 	    *swpin = *swpout = 0;
 	}
     }
--- net-snmp-5.7.1/./agent/mibgroup/ucd-snmp/diskio.c~	2011-09-28 07:53:47.000000000 +0300
+++ net-snmp-5.7.1/./agent/mibgroup/ucd-snmp/diskio.c	2011-12-27 16:33:10.128099629 +0200
@@ -979,7 +979,8 @@
 {
     FILE* parts;
     time_t now;
-    
+    static int first = 1;
+
     now = time(NULL);
     if (cache_time + CACHE_TIMEOUT > now) {
         return 0;
@@ -1024,7 +1025,11 @@
 	int rc;
 	parts = fopen("/proc/partitions", "r");
 	if (!parts) {
-	    snmp_log_perror("/proc/partitions");
+	    if (first) {
+		// log error only once
+		snmp_log_perror("/proc/partitions");
+		first = 0;
+	    }
 	    return 1;
 	}