#773104 grub-common: gub2 (jessie upgrade) failed to load alternate bootable debian install

Package:
grub-common
Source:
grub2
Description:
GRand Unified Bootloader (common files)
Submitter:
Rudy Sher
Date:
2014-12-14 11:36:06 UTC
Severity:
important
#773104#5
Date:
2014-12-14 11:32:36 UTC
From:
To:
Dear Maintainer,

Since years, I have installed 2 Debian with different configuration on 2
different LVM structure.

There are all upgrade to 'testing' and frequentely updated.

Since the upgrade of grub2 to a release > 2.?, grub-probe failed to find/load
alternate installation:
[...]
Found initrd image: /boot/initrd.img-3.10-3-amd64
Found Windows 7 (loader) on /dev/sdd1
Found Debian GNU/Linux (jessie/sid) on /dev/mapper/vgDT-rb0_root
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-29.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-29.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-29.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-29.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-29.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-29.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-29.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-29.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-29.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-29.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-29.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-29.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-29.  Check
your device.map.
Found Debian GNU/Linux (jessie/sid) on /dev/mapper/vgDT-root
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-65.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-65.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-65.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-65.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-65.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-65.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-65.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-65.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-65.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-65.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-65.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-65.  Check
your device.map.
/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/dm-65.  Check
your device.map.
done

Any idea?

PS: the /dev/mapper/vgDT-rb0_root is actualy a rollback lvm which I am supposed
to use as chroot to install patches. When patching is finished I expect to be
able to boot on and rollback to /dev/mapper/vgDT-root in case of grave issue
(seems to work fine with Wheezy)