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[Bug 124246] grubby fatal error: unable to find a suitable template



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https://bugzilla.redhat.com/show_bug.cgi?id=124246





--- Comment #32 from Carl Roth <roth ursus net>  2009-04-14 11:37:01 EDT ---
I built grubby/mkinitrd on a F11 rawhide system and turned on the grubby
debugging to try to see what's the matter.

This system is using grubby from mkinitrd-6.0.81-1.fc11.

In my case, I'm trying to upgrade kernel-PAE-2.6.29.1-70.fc11.i686, where my
existing GRUB configuration entry is

  default=0
  timeout=0
  splashimage=(hd0,0)/grub/splash.xpm.gz
  hiddenmenu
  title Fedora (2.6.29.1-68.fc11.i686.PAE)
          root (hd0,0)
          kernel /vmlinuz-2.6.29.1-68.fc11.i686.PAE ro
root=/dev/mapper/hitachi0-root rhgb quiet
          initrd /initrd-2.6.29.1-68.fc11.i686.PAE.img

The failure appears to be in grubby.c:1087 (suitableImage)...  The nash library
extracts the correct root device (/dev/mapper/hitachi0-root), but the stat
calls around line 1144 don't think that the root device corresponds to the
currently-mounted root filesystem.

    dev = nashGetPathBySpec(_nash_context, dev);
    if (!dev)
        return 0;

    i = stat(dev, &sb);
    if (i)
 return 0;

    stat("/", &sb2);

    if (sb.st_rdev != sb2.st_dev)
        return 0;

On my system, the last statement triggers, and suitableImage() returns with
zero (i.e. not a suitable image)

The stat calls show sb (/dev/mapper/hitachi0-root) and sb2 (/) as

(gdb) p sb
$28 = {st_dev = 15, __pad1 = 0, st_ino = 705, st_mode = 25008, st_nlink = 1, 
  st_uid = 0, st_gid = 6, st_rdev = 64769, __pad2 = 0, st_size = 0, 
  st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1239649664, 
    tv_nsec = 304070388}, st_mtim = {tv_sec = 1239649664, 
    tv_nsec = 171003997}, st_ctim = {tv_sec = 1239649664, 
    tv_nsec = 171003997}, __unused4 = 0, __unused5 = 0}

(gdb) p sb2
$27 = {st_dev = 17, __pad1 = 0, st_ino = 256, st_mode = 16877, st_nlink = 1, 
  st_uid = 0, st_gid = 0, st_rdev = 0, __pad2 = 0, st_size = 168, 
  st_blksize = 4096, st_blocks = 8, st_atim = {tv_sec = 1239704224, 
    tv_nsec = 37719940}, st_mtim = {tv_sec = 1239649715, 
    tv_nsec = 958735685}, st_ctim = {tv_sec = 1239649715, 
    tv_nsec = 958735685}, __unused4 = 0, __unused5 = 0}

The offending command-line is

  grubby --add-kernel=/boot/vmlinuz-2.6.29.1-70.fc11.i686.PAE --initrd
/boot/initrd-2.6.29.1-70.fc11.i686.PAE.img --copy-default --make-default
--title 'Fedora (2.6.29.1-70.fc11.i686.PAE)'
'--args=root=/dev/mapper/hitachi0-root ' '--remove-kernel=TITLE=Fedora
(2.6.29.1-70.fc11.i686.PAE)'

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