Re: Error during Install grub on img using loop devices

[Andrei Borzenkov]

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
> 
>