[Bug 1274320] Re: Error: diskfilter writes are not supported

[Graham Warner]

Sadly post #34 did not work for me - server 12.04 clean install using LVM on small system disk; intending to use ZFS on further 4 disks.
Staggering up the Linux learning curve; used vi to modify 00_header, and having found the 2 existing lines:

function recordfail {
  set recordfail=1

assumed that the first two lines of the fix:

if [ "$quickboot" = 1 ]; then
    cat <<EOF

should precede these 'recordfail' lines and the remainder of the fix follow them.
I then ran update-grub and saw what I take to be an error message about grub-probe (the suggestion to type grub-probe - help didn't help) and the diskfilter writes message came up at the next reboot.
Was that a false assumption? - what else might have happened - was pretty careful to avoid typos?
Thanks.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to grub2 in Ubuntu.
https://bugs.launchpad.net/bugs/1274320

Title:
  Error: diskfilter writes are not supported

Status in GRand Unified Bootloader:
  New
Status in “grub2” package in Ubuntu:
  Triaged
Status in “grub2” package in Fedora:
  Unknown

Bug description:
  Once grub chooses what to boot to, an error shows up and will sit on
  the screen for approx. 5 seconds

  "Error: diskfilter writes are not supported.
  Press any key to continue..."

  From what I understand, this error is related to raid partitions, and
  I have two of them (md0, md1). Both partitions are used (root and
  swap). Raid is assembled with mdadm and are raid0

  This error message started appearing right after grub2 was updated on
  01/27/2014.

  System:    Kernel: 3.13.0-5-generic x86_64 (64 bit) Desktop: KDE 4.11.5 Distro: Ubuntu 14.04 trusty
  Drives:    HDD Total Size: 1064.2GB (10.9% used)
          1: id: /dev/sda model: SanDisk_SDSSDRC0 size: 32.0GB
          2: id: /dev/sdb model: SanDisk_SDSSDRC0 size: 32.0GB
          3: id: /dev/sdc model: ST31000528AS size: 1000.2GB
  RAID:      Device-1: /dev/md1 - active raid: 0 components: online: sdb2 sda3 (swap)       Device-2: /dev/md0 - active raid: 0 components: online: sdb1 sda1 ( / )
  Grub2:    grub-efi-amd64 version 2.02~beta2-5

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: grub-efi-amd64 2.02~beta2-5
  ProcVersionSignature: Ubuntu 3.13.0-5.20-generic 3.13.0
  Uname: Linux 3.13.0-5-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.13.2-0ubuntu2
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Wed Jan 29 17:37:59 2014
  SourcePackage: grub2
  UpgradeStatus: Upgraded to trusty on 2014-01-23 (6 days ago)

To manage notifications about this bug go to:
https://bugs.launchpad.net/grub/+bug/1274320/+subscriptions