[bug #38677] Spurious warning about missing LVM PVs from 'grub-probe -t partmap'

[Max Bowsher]

URL:
  <http://savannah.gnu.org/bugs/?38677>

                 Summary: Spurious warning about missing LVM PVs from
'grub-probe -t partmap'
                 Project: GNU GRUB
            Submitted by: maxb
            Submitted on: Sat 06 Apr 2013 20:39:49 GMT
                Category: Disk &amp; Partition
                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: Every Time
         Planned Release: None

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Details:

I've been trying to determine why the grub installation process on one of my
machines logs seemingly scary warnings:

grub-probe: warning: Couldn't find physical volume `pv1'. Some modules may be
missing from core image..

(and the same for pv0)

Upon investigating, the warning is being printed by the command:

grub-probe -d /dev/mapper/vg0-syslv -t partmap

The system setup is a relatively simple one, with two disks, sda and sdb, each
of which containing a single whole disk partition which is an LVM PV. The only
detail which is slightly interesting is that the partitions start at sector
2048 rather than the traditional sector 63 (I had to move them further into
the disk when a GRUB image supporting LVM outgrew 62 sectors).

Some staring at the output of running grub-probe with --verbose suggests that
the problem is that it is not considering partitions as worth probing for
PVs.

System is running Ubuntu raring with packaged GRUB 2.00-13ubuntu2




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