[lfs-support] Error on Reboot

Bruce Dubbs bruce.dubbs at gmail.com
Tue Mar 31 08:15:01 PDT 2015


Ayan Kumar Nath wrote:
> Hi Guys,
>
> I am building LFS for the first time and am just not able to make the
> system boot after the Grub Install.

> Device     Boot   Start      End  Sectors  Size Id Type
> /dev/sda1  *       2048  1026047  1024000  500M 83 Linux
> /dev/sda2       1026048 41943039 40916992 19.5G 8e Linux LVM
>
> Disk /dev/sdb: 20 GiB, 21474836480 bytes, 41943040 sectors

> Disk /dev/mapper/centos-swap: 2 GiB, 2147483648 bytes, 4194304 sectors
> Units: sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disk /dev/mapper/centos-root: 17.5 GiB, 18798870528 bytes, 36716544 sectors
> Units: sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes

> It's a virtual machine running CentOS and LFS is installed on /dev/sdb

That's not obvious from the above.

You need to use a initrd for booting into a LVM partition.  See BLFS.
Plain LFS does not support LVM.

I would tar up the entire LFS build and save to real host.  Then reinstall 
Centos without LVM.  Recreate/format the partition and untar LFS back to the new 
partition.

   -- Bruce



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