Re: Error during Install grub on img using loop devices

[Divya Thaluru]

Hi Andrei,

I am not building with device mapper. I will try and let you know. Thanks for 
your help.

Thanks,
Divya

Sent from my iPhone

> On Jun 26, 2015, at 10:47 PM, Andrei Borzenkov <address@hidden> wrote:
> 
> В Sat, 27 Jun 2015 05:25:12 +0000
> Divya Thaluru <address@hidden> пишет:
> 
>> Hi Andrei,
>> 
>> I tried with 2.02 beta also , I have seen similar error. I will try with 
>> current stream and let you know.
> 
> I just yesterday tested exactly this when answering another mail (see
> archives). So I am absolutely sure it works in current upstream. What
> could go wrong, you need to link grub utilities with libdevmapper. Make
> sure configure summary shows "With devmapper support: Yes".
> 
>>>> 
>>>> losetup --show --find XXX.raw -> return /dev/loop0
>>>> kpartx -av /dev/loop0 -> adds maps loop0p1
>>>> mkfs.ext4 /dev/mapper/loop0p1
>>>> mount /dev/mapper/loop0p1 /mnt/work/chroot/
>>>> touch /mnt/work/chroot/dev/loop0
>>>> mount --bind /dev/loop0 /mnt/work/chroot/dev/loop0
>>>> mkdir -p  /mnt/work/chroot/dev/mapper/
>>>> touch /mnt/work/chroot/dev/mapper/loop0p1
>>>> mount --bind /dev/mapper/loop0p1 /mnt/work/chroot/dev/mapper/loop0p1
>>>> mount -t proc none /mnt/work/chroot/proc
>>>> mount -t sysfs none /mnt/work/chroot/sys
>>>> 
>>>> chroot /mnt/work/chroot
> 
> No, this probably won't work in any case. You need to bind mount
> full /dev into your chroot as well. Also there is really no need to use
> chroot at all, you can use grub-install
> --boot-directory=/mnt/chroot/boot