Technically I'd consider it more of a workaround. The actual issue in GRUB
hasn't been resolved.
On 22 Feb 2016 12:16 p.m., "Colin Ian King" <1527...@bugs.launchpad.net>
wrote:

> Chad, can you check if comment #24 is correct, and if so, we can close
> this bug
>
> ** Changed in: zfs-linux (Ubuntu)
>      Assignee: Chad Miller (cmiller) => Colin Ian King (colin-king)
>
> ** Changed in: zfs-linux (Ubuntu)
>    Importance: Undecided => Medium
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1527727
>
> Title:
>   grub-probe for zfs assumes all devices prefix with /dev, ignoring
>   /dev/disk/...
>
> Status in grub:
>   Unknown
> Status in grub2 package in Ubuntu:
>   In Progress
> Status in zfs-linux package in Ubuntu:
>   In Progress
>
> Bug description:
>   update-grub runs /usr/sbin/grub-probe
>
>   Without libzfslinux support compiled in, /usr/sbin/grub-probe runs
>   ["zpool", "status", poolname] to find out ZFS info.
>
>   zpool responds with device names as used at (I think!) pool creation
>   time. Often, this is /dev/disk/by-id/... names, without the path.
>
>   grub-probe then parses the output, and takes the names of devices, and
>   if they do not start with a "/", it prepends "/dev/".
>
>   It then tests the existence of the path name of the device. it fails.
>
>   grub-probe then returns  something like
>
>   /usr/sbin/grub-probe: error: failed to get canonical path of `/dev
>   /ata-ST31000333AS_99999999-part1'.
>
>   The actual path is of course /dev/disk/by-
>   id/ST31000333AS_99999999-part1
>
>   It can prepend smarter than "/dev" or it can understand ZFS natively,
>   to fix the problem.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/grub/+bug/1527727/+subscriptions
>

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https://bugs.launchpad.net/bugs/1527727

Title:
  grub-probe for zfs assumes all devices prefix with /dev, ignoring
  /dev/disk/...

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