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Re: Error during Install grub on img using loop devices


From: Divya Thaluru
Subject: Re: Error during Install grub on img using loop devices
Date: Sat, 27 Jun 2015 05:25:12 +0000

Hi Andrei,

I tried with 2.02 beta also , I have seen similar error. I will try with 
current stream and let you know.

Thanks,
Divya

Sent from my iPhone

> On Jun 26, 2015, at 10:15 PM, Andrei Borzenkov <address@hidden> wrote:
> 
> В Fri, 26 Jun 2015 19:43:36 +0000
> Divya Thaluru <address@hidden> пишет:
> 
>> Hi,
>> 
>> I am using grub 2.00 . I am trying to install grub msdos partition on a raw 
>> image. But grub-install fails looking for lvm disks.
> 
> 
> Your configuration works using current upstream git; it also should
> work using 2.02~beta2.
> 
> 2.00 is very old, there were a lot of changes since then.
> . 
> 
>> Please let me know what I am doing wrong. I built grub from source tar ball.
>> 
>> ./configure \
>> --prefix=%{_prefix} \
>> --sbindir=/sbin \
>> --sysconfdir=%{_sysconfdir} \
>> --disable-grub-emu-usb \
>> --disable-efiemu \
>> --disable-werror
>> 
>> Make
>> Make install
>> 
>> Please let me know for any information.
>> 
>> These are the repro steps :
>> 
>> 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
>> 
>> echo "(hd0) /dev/loop0" > /boot/grub/device.map
>> 
>> bash-4.3# /usr/sbin/grub-install --no-floppy 
>> --grub-mkdevicemap=/boot/grub/device.map --debug /dev/loop0
>> 
>> .....................
>> 
>> is_path_readable_by_grub /boot/grub
>> + path=/boot/grub
>> + test -e /boot/grub
>> + :
>> + /sbin/grub-probe -t fs /boot/grub
>> + return 1
>> + gettext_printf 'Path `%s'\'' is not readable by GRUB on boot. Installation 
>> is impossible. Aborting.\n' /boot/grub
>> + gettext_printf_format='Path `%s'\'' is not readable by GRUB on boot. 
>> Installation is impossible. Aborting.\n'
>> + shift
>> ++ gettext 'Path `%s'\'' is not readable by GRUB on boot. Installation is 
>> impossible. Aborting.\n'
>> ++ printf %s 'Path `%s'\'' is not readable by GRUB on boot. Installation is 
>> impossible. Aborting.\n'
>> + printf 'Path `%s'\'' is not readable by GRUB on boot. Installation is 
>> impossible. Aborting.\n' /boot/grub
>> Path `/boot/grub' is not readable by GRUB on boot. Installation is 
>> impossible. Aborting.
>> + exit 1
>> 
>> 
>> 
>> bash-4.3# /sbin/grub-probe /boot/grub/ -vvv
>> 
>> /sbin/grub-probe: info: opening lvm/loop0p1.
>> 
>> grub-core/kern/disk.c:230: Opening `lvm/loop0p1'...
>> 
>> grub-core/kern/disk.c:230: Opening `hd0'...
>> 
>> /sbin/grub-probe: info: the size of hd0 is 6291456.
>> 
>> grub-core/disk/diskfilter.c:135: Scanning for DISKFILTER devices on disk hd0
>> 
>> /sbin/grub-probe: info: Scanning for DISKFILTER devices on disk hd0.
>> 
>> /sbin/grub-probe: info: Scanning for mdraid1x devices on disk hd0.
>> 
>> grub-core/kern/emu/hostdisk.c:909: opening the device `/dev/loop0' in 
>> open_device()
>> 
>> grub-core/kern/emu/hostdisk.c:886: reusing open device `/dev/loop0'
>> 
>> grub-core/kern/emu/hostdisk.c:886: reusing open device `/dev/loop0'
>> 
>> /sbin/grub-probe: info: Scanning for mdraid09 devices on disk hd0.
>> 
>> grub-core/kern/emu/hostdisk.c:886: reusing open device `/dev/loop0'
>> 
>> /sbin/grub-probe: info: Scanning for mdraid09_be devices on disk hd0.
>> 
>> /sbin/grub-probe: info: Scanning for dmraid_nv devices on disk hd0.
>> 
>> grub-core/kern/emu/hostdisk.c:886: reusing open device `/dev/loop0'
>> 
>> /sbin/grub-probe: info: Scanning for ldm devices on disk hd0.
>> 
>> /sbin/grub-probe: info: scanning hd0 for LDM.
>> 
>> grub-core/kern/emu/hostdisk.c:886: reusing open device `/dev/loop0'
>> 
>> /sbin/grub-probe: info: no LDM signature found.
>> 
>> /sbin/grub-probe: info: Scanning for lvm devices on disk hd0.
>> 
>> /sbin/grub-probe: info: no LVM signature found.
>> 
>> grub-core/partmap/msdos.c:181: partition 0: flag 0x0, type 0x83, start 0x3f, 
>> len 0x5b85a0
>> 
>> grub-core/disk/diskfilter.c:135: Scanning for DISKFILTER devices on disk hd0
>> 
>> /sbin/grub-probe: info: Scanning for DISKFILTER devices on disk hd0.
>> 
>> /sbin/grub-probe: info: Scanning for mdraid1x devices on disk hd0.
>> 
>> grub-core/kern/emu/hostdisk.c:886: reusing open device `/dev/loop0'
>> 
>> grub-core/kern/emu/hostdisk.c:886: reusing open device `/dev/loop0'
>> 
>> /sbin/grub-probe: info: Scanning for mdraid09 devices on disk hd0.
>> 
>> grub-core/kern/emu/hostdisk.c:886: reusing open device `/dev/loop0'
>> 
>> grub-core/kern/emu/hostdisk.c:886: reusing open device `/dev/loop0'
>> 
>> /sbin/grub-probe: info: Scanning for mdraid09_be devices on disk hd0.
>> 
>> /sbin/grub-probe: info: Scanning for dmraid_nv devices on disk hd0.
>> 
>> /sbin/grub-probe: info: Scanning for ldm devices on disk hd0.
>> 
>> /sbin/grub-probe: info: scanning hd0 for LDM.
>> 
>> /sbin/grub-probe: info: no LDM signature found.
>> 
>> /sbin/grub-probe: info: Scanning for lvm devices on disk hd0.
>> 
>> /sbin/grub-probe: info: no LVM signature found.
>> 
>> grub-core/partmap/apple.c:123: bad magic (found 0x0; wanted 0x4552
>> 
>> grub-core/partmap/msdos.c:181: partition 1: flag 0x0, type 0x0, start 0x0, 
>> len 0x0
>> 
>> grub-core/partmap/msdos.c:181: partition 2: flag 0x0, type 0x0, start 0x0, 
>> len 0x0
>> 
>> grub-core/partmap/msdos.c:181: partition 3: flag 0x0, type 0x0, start 0x0, 
>> len 0x0
>> 
>> grub-core/partmap/msdos.c:181: partition 0: flag 0x0, type 0x83, start 0x3f, 
>> len 0x5b85a0
>> 
>> grub-core/partmap/msdos.c:181: partition 1: flag 0x0, type 0x0, start 0x0, 
>> len 0x0
>> 
>> grub-core/partmap/msdos.c:181: partition 2: flag 0x0, type 0x0, start 0x0, 
>> len 0x0
>> 
>> grub-core/partmap/msdos.c:181: partition 3: flag 0x0, type 0x0, start 0x0, 
>> len 0x0
>> 
>> grub-core/partmap/msdos.c:181: partition 0: flag 0x0, type 0x83, start 0x3f, 
>> len 0x5b85a0
>> 
>> grub-core/partmap/msdos.c:181: partition 1: flag 0x0, type 0x0, start 0x0, 
>> len 0x0
>> 
>> grub-core/partmap/msdos.c:181: partition 2: flag 0x0, type 0x0, start 0x0, 
>> len 0x0
>> 
>> grub-core/partmap/msdos.c:181: partition 3: flag 0x0, type 0x0, start 0x0, 
>> len 0x0
>> 
>> grub-core/partmap/apple.c:123: bad magic (found 0xeb63; wanted 0x4552
>> 
>> grub-core/kern/disk.c:326: Closing `hd0'.
>> 
>> grub-core/kern/disk.c:312: Opening `lvm/loop0p1' failed.
>> 
>> grub-core/kern/disk.c:326: Closing `lvm/loop0p1'.
>> 
>> /sbin/grub-probe: error: disk `lvm/loop0p1' not found.
>> 
>> bash-4.3#
>> 
>> 
>> Thanks,
>> Divya
> 



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