Re: Error during Install grub on img using loop devices

[Divya Thaluru]

Hi Andrei,

Good news I was able to install grub, but I have some issues.

1)
Grub-install and grub-mkconfig commands throw this error but both are
completed.
device-mapper: table ioctl on  failed: No such device or address

2)I generate grub.cfg file using grub-mkconfig command. It generates
grub.cfg file with loop devices as root. I have to go change manually. Is
there any fix for it?

3)If I add verbose option to grub-install, grub-install command won’t work
and it just displays version info as output. Is there any patch for  this
fix?

4)At the time of boot, I am getting a following error message
error: no symbol table

Loading Linux 3.19.2…. ...
Press any key to continue ...

The system then proceeds to boot normally.



Thanks for your help...

Thanks,
Divya


On 6/26/15, 10:53 PM, "Divya Thaluru" <address@hidden> wrote:

>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