[bug #35251] Wrong module loading order when using LVM

[Bernhard Seibold]

URL:
  <http://savannah.gnu.org/bugs/?35251>

                 Summary: Wrong module loading order when using LVM
                 Project: GNU GRUB
            Submitted by: bse8128
            Submitted on: Fri 06 Jan 2012 05:02:41 PM GMT
                Category: Configuration
                Severity: Major
                Priority: 5 - Normal
              Item Group: Software Error
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 
                 Release: other
         Reproducibility: None
         Planned Release: None

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Details:

The function "prepare_grub_to_access_device" first loads the "abstraction"
module, and then the "partmap" module. In my case, these are lvm and
part_msdos. However part_msdos is needed first in order for lvm to find its
volumes.

Usually this doesn't matter as part_msdos will already be loaded anyway
(BIOS), but in my case, it isn't. I'm booting in UEFI mode from a GPT drive,
but my LVM volumes are on a second drive with a MSDOS partition map.

As a result, lvm doesn't detect any volumes. After removing and reloading the
lvm module, all lvm volumes are found. Changing the module loading order
manually also fixes the problem for me.




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