grub2 mdadm lvm

[Zdenek Janis]

Dobry den,
pozadam o radu/napovedu zkusenych s grub2, ktery mi nejde nainstalovat:

Situace:

SW RAID1 na celych diskach (/dev/sda,/dev/sdb) (metadata=1.2). Nad timto 
RAIDem je LVM2, kde mam vytvorene odily pro root, swap, home a dalsi.

#cat /proc/mdstat:

md100 : active raid1 sda[2] sdb[0]
       976631488 blocks super 1.2 [2/2] [UU]
       bitmap: 0/8 pages [0KB], 65536KB chunk

# lvs
   LV                  VG   Attr       LSize   Pool Origin Data%  Move
   home                lv   -wi-a----- 850.00g
   root                lv   -wi-ao----  10.00g
   swap                lv   -wi-a-----   3.00g

# mdadm --detail /dev/md/100 | grep 'UUID'
     UUID : eca73779:7714d39b:ecfd5be0:5fcce548

# grub-install /dev/md/100
grub-install: error: unable to identify a filesystem in 
mduuid/eca737797714d39becfd5be05fcce548; safety check can't be performed.

No a tady ani google ani vsemozne pokusy nepomohly. Ponekud mi unika, 
proc se snazi zjistit FS na /dev/md/100, kdyz FS by mel zjistovat nad 
/dev/lv/root (/dev/mapper/lv-root).

System: Debian SID (unstable), kernel: 3.14.3 (3.14.4)
Grub2 version: 2.02~beta2-10
Jsou-li treba dalsi informace, poskytnu.
Rad bych zustal u vyse uvedene konfigurace - jen ten zavadec...

Dekuji.

-- 
S pozdravem
                  Zdenek Janis