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Date: Fri, 02 Aug 2013 13:27:52 +0300
From: andriy <l.andriy@gmail.com>
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Subject: [sisyphus] grub2+lvm+root_fs
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Здравствуйте!

Пробую перевести систему с одного HDD на другой, с обыкновенной разбивки 
диска на LVM.
LVM создал без проблем. Скопировал данные.
Но не могу сделать другой HDD загружаемым.
Структура диска с LVM
-32мб места для загрузчика (должно было бы хватить)
- sdb1 (просто раздел)
- sdb2 (swap)
- sdb3 содержит LVM:
             dm0 - root
         (/dev/mapper/andriy2tblvm--vol-AndriyL2TBlvm--root, 
uuid=f86aeba8-708b-4f85-884f-ca984c1497c5),
             dm1 - home.

В /etc/sysconfig/grub2
GRUB_PRELOAD_MODULES='lvm'

update-grub генерирует такой /boot/grub/grub.cfg:
--------------
insmod lvm
...
...
menuentry 'ALT Linux 6.0.1 Spt' --class gnu-linux --class gnu --class os 
$menuentry_id_option 
'gnulinux-simple-f86aeba8-708b-4f85-884f-ca984c1497c5' {
         savedefault
         load_video
         set gfxpayload=keep
         insmod gzio
         insmod part_msdos
         insmod lvm
         insmod ext2
         set root='lvm/andriy2tblvm--vol-AndriyL2TBlvm--root'
         if [ x$feature_platform_search_hint = xy ]; then
           search --no-floppy --fs-uuid --set=root 
--hint='lvm/andriy2tblvm--vol-AndriyL2TBlvm--root' 
f86aeba8-708b-4f85-884f-ca984c1497c5
         else
           search --no-floppy --fs-uuid --set=root 
f86aeba8-708b-4f85-884f-ca984c1497c5
         fi
         echo    'Loading Linux 3.9.9-std-def-alt1 ...'
         linux   /boot/vmlinuz-3.9.9-std-def-alt1 
root=/dev/mapper/andriy2tblvm--vol-AndriyL2TBlvm--root ro failsafe 
vga=normal panic=30 splash init=/sbin/systemd
         echo    'Loading initial ramdisk ...'
         initrd  /boot/initrd-3.9.9-std-def-alt1.img
}
....

--------------
grub-install /dev/sdb - все ок

/etc/fstab:
[root@andriy grub]# cat /etc/fstab
proc            /proc                   proc 
nosuid,noexec,gid=proc          0 0
devpts          /dev/pts                devpts 
nosuid,noexec,gid=tty,mode=620  0 0
tmpfs           /tmp                    tmpfs 
nosuid                          0 0
/dev/mapper/andriy2tblvm--vol-AndriyL2TBlvm--root / ext4  defaults 1  1
UUID=55e04e27-7119-472d-8598-ded3ecbf3ada  swap defaults 0       0
/dev/sr0        /media/cdrom    udf,iso9660 ro,noauto,user,utf8     0 0
none            /proc/bus/usb           usbfs 
defaults,devgid=428,devmode=664                        0 0
/dev/mapper/andriy2tblvm--vol-AndriyL2TBlvm--home /home ext4 defaults 1  1

На этапе загрузки получаю:
initrd: loop: ERROR: /root: Not mounted
initrd: Stage 'loop' failed
.... Crtrl-D

Что я делаю не так или где почитать как правильно?