[bug #44611] grub2-probe fails to get canonical path when kernel mounts root partition with root=PARTUUID=<root partition uuid>

[Bobby Kent]

URL:
  <http://savannah.gnu.org/bugs/?44611>

                 Summary: grub2-probe fails to get canonical path when kernel
mounts root partition with root=PARTUUID=<root partition uuid>
                 Project: GNU GRUB
            Submitted by: bobbyk
            Submitted on: Mon 23 Mar 2015 07:21:52 PM GMT
                Category: None
                Severity: Major
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 
                 Release: 2.02~beta1
         Reproducibility: Every Time
         Planned Release: None

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Details:

Steps to reproduce:
1) establish root partition uuid of / via blkid /dev/sd<root drive><root
partition>
1) add:
GRUB_DEVICE="PARTUUID=<root partition uuid>"
to /etc/default/grub
2) grub2-mkconfig -o /boot/grub/grub.cfg
3) reboot

At this point further executions of grub2-mkconfig will fail with:

grub2-probe: error: failed to get canonical path of
`PARTUUID=<root_partition_uuid>'

A workaround (for this user) exists:
1) ln -s /dev/sd<root drive><root partition> "PARTUUID=<root partition uuid>"
2) grub2-mkconfig -o /boot/grub/grub.cfg
3) rm "PARTUUID=<root partition uuid>"





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