Bug#768659: grub-efi: fails badly with xfs ftype=1

[Marc Lehmann]

Source: grub-efi
Version: 2.00-22
Severity: normal

Dear Maintainer,

I converted my /boot filesystem (actually /) to xfs formatted with the ftype=1 option:

   mkfs.xfs -n ftype=1 ...

Neither grub-install nor update-grub gave any indication of a problem,
however, the system became unbbootable due to this: On boot, grub failed
with screenfuls of error messages such as (from memory, there might be more
messages and the text might not match exactly):

   Attempt to access beyond end of device
   Corrupt filesystem
   XFS invalid inode

Converting the filesystem to XFS formatted identically, but withh ftype=0,
made the system bootable again.

-- System Information:
Debian Release: 7.5
  APT prefers stable
  APT policy: (990, 'stable'), (500, 'unstable'), (500, 'testing'), (500, 'oldstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16-3-amd64 (SMP w/12 CPU cores)
Locale: LANG=C, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash