David,
Again the patches are upstream and may already be in the RHEL
packages - I have not checked.

George


Description:

A fix for the makedumpfile command is needed to make dumps work on UV.

makedumpfile's path FILENAME_BITMAP "/tmp/..." causes it to try to write
bitmap files to the ramdisk.  These can be very large if the machine has
lots of memory, and so writing the file can fail.

A TMPDIR environment variable is set in the script
/lib/mkinitrd/scripts/boot-kdump.sh. So this patch assumes that
the FILENAME_BITMAP path should be based at TMPDIR.

The patch looks like this:

Index: makedumpfile-1.3.5/makedumpfile.c
===================================================================
--- makedumpfile-1.3.5.orig/makedumpfile.c
+++ makedumpfile-1.3.5/makedumpfile.c
@@ -933,14 +933,21 @@ int
 open_dump_bitmap(void)
 {
        int i, fd;
+       char *tmpname;

-       if ((info->name_bitmap
-           = (char *)malloc(sizeof(FILENAME_BITMAP))) == NULL) {
+       tmpname = getenv("TMPDIR");
+       if (!tmpname)
+               tmpname = "/tmp";
+
+       if ((info->name_bitmap = (char *)malloc(sizeof(FILENAME_BITMAP) +
+                                               strlen(tmpname) + 1)) == NULL) {
                ERRMSG("Can't allocate memory for the filename. %s\n",
                    strerror(errno));
                return FALSE;
        }
-       strcpy(info->name_bitmap, FILENAME_BITMAP);
+       strcpy(info->name_bitmap, tmpname);
+       strcat(info->name_bitmap, "/");
+       strcat(info->name_bitmap, FILENAME_BITMAP);
        if ((fd = mkstemp(info->name_bitmap)) < 0) {
                ERRMSG("Can't open the bitmap file(%s). %s\n",
                    info->name_bitmap, strerror(errno));
Index: makedumpfile-1.3.5/makedumpfile.h
===================================================================
--- makedumpfile-1.3.5.orig/makedumpfile.h
+++ makedumpfile-1.3.5/makedumpfile.h
@@ -230,7 +230,7 @@ do { \
 #define BUFSIZE_FGETS          (1500)
 #define BUFSIZE_BITMAP         (4096)
 #define PFN_BUFBITMAP          (BITPERBYTE*BUFSIZE_BITMAP)
-#define FILENAME_BITMAP                "/tmp/kdump_bitmapXXXXXX"
+#define FILENAME_BITMAP                "kdump_bitmapXXXXXX"
 #define FILENAME_STDOUT                "STDOUT"

 /*
@@ -449,7 +449,7 @@ do { \
 #define KVER_MIN_SHIFT 16
 #define KERNEL_VERSION(x,y,z) (((x) << KVER_MAJ_SHIFT) | ((y) << KVER_MIN_SHIFT) | (z))
 #define OLDEST_VERSION         KERNEL_VERSION(2, 6, 15)/* linux-2.6.15 */
-#define LATEST_VERSION         KERNEL_VERSION(2, 6, 31)/* linux-2.6.31 */
+#define LATEST_VERSION         KERNEL_VERSION(2, 6, 32)/* linux-2.6.32 */

 /*
  * vmcoreinfo in /proc/vmcore


This patch is now upstream.  The original patch was separated into 2 patches
at Masayuki's request.  Both are applied.


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