[Bug 1852611] Re: update-grub fails because 10_linux_zfs puts a spare closed brace

[Luca Citi]

*** This bug is a duplicate of bug 1848856 ***
    https://bugs.launchpad.net/bugs/1848856

Hi Didier

You are right, this is rather a duplicate of bug #1848856. Both bpool
and rpool are mirrored in my case.

$ grub-probe --target=device /boot/
/dev/sdb98
/dev/sda98
$ grub-probe --target=device /boot/ | head -1
/dev/sdb98

The new release fixes this problem.

Many thanks,
Luca

** This bug is no longer a duplicate of bug 1848399
   update-grub fails if a pool fails to import
** This bug has been marked a duplicate of bug 1848856
   zfs on root fails with grub syntax error with multidisks pools

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https://bugs.launchpad.net/bugs/1852611

Title:
  update-grub fails because 10_linux_zfs puts a spare closed brace

Status in grub2 package in Ubuntu:
  New

Bug description:
  I have installed 19.10 on a zfs filesystem using the installer.
  I have also installed zfs-auto-snapshot. Zsys is not installed.
  When I run "update-grub", I get the error:

  Adding boot menu entry for EFI firmware configuration
  error: syntax error.
  error: Incorrect command.
  error: syntax error.
  Syntax error at line 178

  At that line the file contains an unmatched closed brace "}".

  Looking at the code for /etc/grub.d/10_linux_zfs I think that the
  error is caused by the line "at_least_one_entry=1" at row 864. Since
  the "main" entry does not open an extra brace (unlike, "advanced" or
  "history"), I don't think it should set the flag to trigger the
  addition of the extra closed brace at line 942.

  Commenting line 864 fixes the problem in my case.

  
  === Environment ===

  $ lsb_release -rd
  Description:	Ubuntu 19.10
  Release:	19.10

  $ apt-cache policy grub-common
  grub-common:
    Installed: 2.04-1ubuntu12
    Candidate: 2.04-1ubuntu12
    Version table:
   *** 2.04-1ubuntu12 500
          500 http://gb.archive.ubuntu.com/ubuntu eoan/main amd64 Packages
          100 /var/lib/dpkg/status

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