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Subject: LVM as root device
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grub2+LVM+XEN issues

----8<------------
devel:/boot/grub# cat /boot/grub/device.map
(hd0)   /dev/hda
devel:/boot/grub# grub-probe --device-map=/boot/grub/device.map
/boot/grub -t device
/dev/dm-9
devel:/boot/grub# grub-probe --device-map=/boot/grub/device.map
/boot/grub -t drive
cannot find a GRUB drive for /dev/dm-9.
-----8<-----------
must be (devel-devel-root)

Into the code i see that
grub_guess_root_device works well and have LVM related code
in grub_util_biosdisk_get_grub_dev i dont see  LVM code

Questions:
LVM must use grub_util_biosdisk_get_grub_dev to determine the grub device?
grub_util_biosdisk_get_grub_dev support LVM devices?
someone can help me to fix this?  Jerome?