[Bug 1354730] Re: 14.04 grub-install failed: Wrong number of args: mapdevfs <path>

[Willem Ligtenberg]

syslog of the installer

** Attachment added: "syslog of installer"
   https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1354730/+attachment/4173435/+files/syslog

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Title:
  14.04 grub-install failed: Wrong number of args: mapdevfs <path>

Status in “grub-installer” package in Ubuntu:
  New

Bug description:
  I was previously able to install ubuntu on a root btrfs filesystem in raid1 mode as I described here:
  http://askubuntu.com/questions/87241/how-to-install-using-btrfs-in-raid10-mode

  I am now trying to do this again, using Ubuntu 14.04.
  Everything goes fine up to the point that it wants to install grub.
  It mentions the error in the title and fails.

  Apparently, somebody else also reported an error like this with 14.04.
  https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/912431 (at the bottom a person mentions that it occurs in 14.04)

  I will attach some files later.

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