Author: Daniel Novotny
Description: The contents of /proc/diskstats have changed since 2.6.25
Bug-Redhat: https://bugzilla.redhat.com/show_bug.cgi?id=485243
--- a/proc/sysinfo.c
+++ b/proc/sysinfo.c
@@ -796,6 +796,18 @@
 }
 
 /////////////////////////////////////////////////////////////////////////////
+static int is_disk(char *dev)
+{
+  char syspath[PATH_MAX];
+  char *slash;
+
+  while ((slash = strchr(dev, '/')))
+    *slash = '!';
+  snprintf(syspath, sizeof(syspath), "/sys/block/%s", dev);
+  return !(access(syspath, F_OK));
+}
+
+/////////////////////////////////////////////////////////////////////////////
 
 unsigned int getdiskstat(struct disk_stat **disks, struct partition_stat **partitions){
   FILE* fd;
@@ -803,6 +815,7 @@
   int cPartition = 0;
   int fields;
   unsigned dummy;
+  char devname[PATH_MAX];
 
   *disks = NULL;
   *partitions = NULL;
@@ -815,8 +828,9 @@
       fclose(fd);
       break;
     }
-    fields = sscanf(buff, " %*d %*d %*s %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %u", &dummy);
-    if (fields == 1){
+    fields = sscanf(buff, " %*d %*d %15s %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %u",
+            &devname, &dummy);
+    if (fields == 2 && is_disk(devname)){
       (*disks) = realloc(*disks, (cDisk+1)*sizeof(struct disk_stat));
       sscanf(buff,  "   %*d    %*d %15s %u %u %llu %u %u %u %llu %u %u %u %u",
         //&disk_major,
@@ -839,7 +853,9 @@
     }else{
       (*partitions) = realloc(*partitions, (cPartition+1)*sizeof(struct partition_stat));
       fflush(stdout);
-      sscanf(buff,  "   %*d    %*d %15s %u %llu %u %u",
+      sscanf(buff,  (fields == 2)
+          ? "   %*d    %*d %15s %u %*u %llu %*u %u %*u %llu %*u %*u %*u %*u"
+          : "   %*d    %*d %15s %u %llu %u %llu",
         //&part_major,
         //&part_minor,
         (*partitions)[cPartition].partition_name,
--- a/proc/sysinfo.h
+++ b/proc/sysinfo.h
@@ -113,7 +113,7 @@
 	unsigned           parent_disk;  // index into a struct disk_stat array
 	unsigned           reads;
 	unsigned           writes;
-	unsigned           requested_writes;
+	unsigned long long requested_writes;
 }partition_stat;
 
 extern unsigned int getpartitions_num(struct disk_stat *disks, int ndisks);
--- a/vmstat.c
+++ b/vmstat.c
@@ -286,7 +286,7 @@
     struct disk_stat *disks;
     struct partition_stat *partitions, *current_partition=NULL;
     unsigned long ndisks, j, k, npartitions;
-    const char format[] = "%20u %10llu %10u %10u\n";
+    const char format[] = "%20u %10llu %10u %10llu\n";
 
     fDiskstat=fopen("/proc/diskstats","rb");
     if(!fDiskstat){
