ec2 image not starting after dist-upgrade

[alberto fuentes <pajaro@gmail.com>]

Hi!

Im running testing/sid. After last dist-upgrade image refuses to
start. I pasted the output from aws at the end of the mail

I think this is the key -->"ERROR Invalid kernel:
xc_dom_probe_bzimage_kernel: unknown compression format". I read
somewhere about grub having problems with xz images, but not sure how
to fix it.

So far I tried to change /etc/default/grub from GRUB_DEFAULT=0 to 2
and run grub-update with the disk attached to another instance, to try
to boot and older working kernel, but now the instance start and stops
without showing any errors

my google fu does not show anything and i dont really know much about
the kernel to mess with it and i would probably only make it worse on
my own.

Can anybody help me? :)




    Xen Minimal OS!
  start_info: 0xac4000(VA)
    nr_pages: 0x26700
  shared_inf: 0xbf320000(MA)
     pt_base: 0xac7000(VA)
nr_pt_frames: 0x9
    mfn_list: 0x990000(VA)
   mod_start: 0x0(VA)
     mod_len: 0
       flags: 0x0
    cmd_line: root=/dev/sda1 ro 4
  stack:      0x94f860-0x96f860
MM: Init
      _text: 0x0(VA)
     _etext: 0x5ffbd(VA)
   _erodata: 0x78000(VA)
     _edata: 0x80ae0(VA)
stack start: 0x94f860(VA)
       _end: 0x98fe68(VA)
  start_pfn: ad3
    max_pfn: 26700
Mapping memory range 0xc00000 - 0x26700000
setting 0x0-0x78000 readonly
skipped 0x1000
MM: Initialise page allocator for c01000(c01000)-26700000(26700000)
MM: done
Demand map pfns at 26701000-2026701000.
Heap resides at 2026702000-4026702000.
Initialising timer interface
Initialising console ... done.
gnttab_table mapped at 0x26701000.
Initialising scheduler
Thread "Idle": pointer: 0x2026702010, stack: 0x26640000
Initialising xenbus
Thread "xenstore": pointer: 0x20267027c0, stack: 0x26650000
Dummy main: start_info=0x96f960
Thread "main": pointer: 0x2026702f70, stack: 0x26660000
"main" "root=/dev/sda1" "ro" "4"
vbd 2049 is hd0
******************* BLKFRONT for device/vbd/2049 **********


backend at /local/domain/0/backend/vbd/297/2049
Failed to read /local/domain/0/backend/vbd/297/2049/feature-barrier.
Failed to read /local/domain/0/backend/vbd/297/2049/feature-flush-cache.
16777216 sectors of 512 bytes
**************************

Press `ESC' to enter the menu... 4
Press `ESC' to enter the menu... 3
Press `ESC' to enter the menu... 2
Press `ESC' to enter the menu... 1
Press `ESC' to enter the menu... 0
    [H
    [J  Booting '3.9-1-amd64'



root (hd0)

 Filesystem type is ext2fs, using whole disk

kernel /boot/vmlinuz-3.9-1-amd64 root=/dev/xvda1 ro

initrd /boot/initrd.img-3.9-1-amd64



ERROR Invalid kernel: xc_dom_probe_bzimage_kernel: unknown compression format

xc_dom_bzimageloader.c:394: panic: xc_dom_probe_bzimage_kernel:
unknown compression format
ERROR Invalid kernel: xc_dom_find_loader: no loader found

xc_dom_core.c:536: panic: xc_dom_find_loader: no loader found
xc_dom_parse_image returned -1



Error 9: Unknown boot failure



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