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[solved] I am stuck with install of softraid/lvm at grub
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Thiemo
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Joined: 20 Nov 2002
Posts: 138

PostPosted: Fri May 05, 2017 1:51 pm    Post subject: [solved] I am stuck with install of softraid/lvm at grub Reply with quote

I started off with https://forums.gentoo.org/viewtopic-t-1061792-highlight-.html but as there is already quite much listing in it making it uneasy to read and I give it another slightly different go, I have opened this thread.

I have started with Gentoo LiveDVD and followed the handbook to install a system with /boot on a softraid partition and the rest on lvm2 partitions.

My partitioning:
Code:
livecd ~ # lsblk
NAME                    MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
sda                       8:0    0 232.9G  0 disk 
`-sda1                    8:1    0 232.9G  0 part 
  `-md126                 9:126  0 232.9G  0 raid1
sdb                       8:16   0 232.9G  0 disk 
`-sdb1                    8:17   0 232.9G  0 part 
  `-md126                 9:126  0 232.9G  0 raid1
sdc                       8:32   0 465.8G  0 disk 
|-sdc1                    8:33   0   159M  0 part 
| `-md123                 9:123  0   159M  0 raid1
|-sdc2                    8:34   0   160M  0 part 
| `-md127                 9:127  0   160M  0 raid1 /mnt/gentoo/boot
|-sdc3                    8:35   0   160M  0 part 
| `-md124                 9:124  0   160M  0 raid1
`-sdc4                    8:36   0 465.3G  0 part 
  `-md125                 9:125  0 465.3G  0 raid1
    |-vg_sata-lv_home   252:0    0 237.8G  0 lvm   /mnt/gentoo/home
    |-vg_sata-lv_root_1 252:1    0    20G  0 lvm   
    |-vg_sata-lv_root_2 252:2    0    40G  0 lvm   /mnt/gentoo
    |-vg_sata-lv_root_3 252:3    0    20G  0 lvm   
    |-vg_sata-lv_swap   252:4    0    24G  0 lvm   [SWAP]
    |-vg_sata-lv_tmp    252:5    0   3.5G  0 lvm   /mnt/gentoo/tmp
    |-vg_sata-lv_var_1  252:6    0    40G  0 lvm   
    |-vg_sata-lv_var_2  252:7    0    40G  0 lvm   /mnt/gentoo/var
    `-vg_sata-lv_var_3  252:8    0    40G  0 lvm   
sdd                       8:48   0 465.8G  0 disk 
|-sdd1                    8:49   0   159M  0 part 
| `-md123                 9:123  0   159M  0 raid1
|-sdd2                    8:50   0   160M  0 part 
| `-md127                 9:127  0   160M  0 raid1 /mnt/gentoo/boot
|-sdd3                    8:51   0   160M  0 part 
| `-md124                 9:124  0   160M  0 raid1
`-sdd4                    8:52   0 465.3G  0 part 
  `-md125                 9:125  0 465.3G  0 raid1
    |-vg_sata-lv_home   252:0    0 237.8G  0 lvm   /mnt/gentoo/home
    |-vg_sata-lv_root_1 252:1    0    20G  0 lvm   
    |-vg_sata-lv_root_2 252:2    0    40G  0 lvm   /mnt/gentoo
    |-vg_sata-lv_root_3 252:3    0    20G  0 lvm   
    |-vg_sata-lv_swap   252:4    0    24G  0 lvm   [SWAP]
    |-vg_sata-lv_tmp    252:5    0   3.5G  0 lvm   /mnt/gentoo/tmp
    |-vg_sata-lv_var_1  252:6    0    40G  0 lvm   
    |-vg_sata-lv_var_2  252:7    0    40G  0 lvm   /mnt/gentoo/var
    `-vg_sata-lv_var_3  252:8    0    40G  0 lvm


I entered chroot with:
Code:
cp -L /etc/resolv.conf /mnt/gentoo/etc && \
        mount -t proc /proc /mnt/gentoo/proc && \
        mount --rbind /sys /mnt/gentoo/sys && \
        mount --make-rslave /mnt/gentoo/sys && \
        mount --rbind /dev /mnt/gentoo/dev && \
        mount --make-rslave /mnt/gentoo/dev && \
        mount --rbind /boot /mnt/gentoo/boot && \
        mount --rbind /run/ /mnt/gentoo/run && \
        mount --rbind /run/ /mnt/gentoo/run && \
        chroot /mnt/gentoo /bin/bash


and did:
Code:
source /etc/profile && export PS1="(chroot) $PS1"


My make.conf:
Code:
(chroot) livecd / # grep -vE "^\s*($|#)" /etc/portage/make.conf
CFLAGS="-O2 -pipe -march=native"
CXXFLAGS="${CFLAGS}"
CHOST="x86_64-pc-linux-gnu"
USE="anacron aspell bindist bluray cdparanoia device-mapper g-sorcery gd geoip
     geolocation gimp gnupg gpg gphoto2 graphviz hunspell ical imagemagick
     imap javamail javascript json kbd kbindicator kdesu konsole kontact
     maildir ocr odbc ogg123 opencl openldap openmax openssl opus oracle
     orathreads postgres pulseaudio savedconfig smtp v4l v4l2 vim vim-syntax
     vlc -dvdr -gnome -gtk -gtk2 -gtk3"
CPU_FLAGS_X86="3dnow 3dnowext mmx mmxext popcnt sse sse2 sse3 sse4a"
PORTDIR="/usr/portage"
DISTDIR="${PORTDIR}/distfiles"
PKGDIR="${PORTDIR}/packages"
MAKEOPTS="-j2"
LINGUAS="de de_DE de_CH en_GB es_ES"
L10N="de de-DE de-CH en-GB es-ES"
VIDEO_CARDS="intel nvidia vesa"
INPUT_DEVICES="evdev"
GRUB_PLATFORMS="pc" # sort of pc=legecy system without EFI
GENTOO_MIRRORS="http://ftp.uni-erlangen.de/pub/mirrors/gentoo ftp://ftp.uni-erlangen.de/pub/mirrors/gentoo ftp://gentoo.imj.fr/pub/gentoo/ rsync://ftp-stud.hs-esslingen.de/gentoo/ http://mirror.bytemark.co.uk/gentoo/ rsync://mirror.bytemark.co.uk/gentoo/ rsync://ftp.snt.utwente.nl/gentoo http://ftp.halifax.rwth-aachen.de/gentoo/ ftp://ftp.halifax.rwth-aachen.de/gentoo/ ftp://sunsite.informatik.rwth-aachen.de/pub/Linux/gentoo rsync://mirror.netcologne.de/gentoo/ ftp://ftp.mirrorservice.org/sites/distfiles.gentoo.org/ rsync://mirror.leaseweb.com/gentoo/ http://mirror.netcologne.de/gentoo/ rsync://rsync.gentoo.org/gentoo-portage"


I did some extra installation of software.

However, trying to install grub with
Code:
(chroot) livecd / # grub-install /dev/sda
Installing for i386-pc platform.
grub-install: error: failed to get canonical path of `aufs'.


Some research on the net made me make a df which then showed me my boot on a device simply "aufs".

Code:

(chroot) livecd / # df
Filesystem                    1K-blocks     Used Available Use% Mounted on
/dev/mapper/vg_sata-lv_root_2  41022688 15516332  24441396  39% /
/dev/mapper/vg_sata-lv_var_2   41022688  3013504  36944224   8% /var
/dev/mapper/vg_sata-lv_tmp      3546848     7200   3339764   1% /tmp
/dev/mapper/vg_sata-lv_home   244372804 88631264 154727816  37% /home
aufs                            6145984   283456   5862528   5% /boot
cgroup_root                       10240        0     10240   0% /sys/fs/cgroup
udev                              10240        4     10236   1% /dev
shm                             6145984        0   6145984   0% /dev/shm
tmpfs                           1229200     1172   1228028   1% /run
none                            6145984       12   6145972   1% /run/user/1000
/dev/sde4                       5448780  1124224   4028060  22% /run/media/gentoo/Gentoo-amd64


The same source on the net suggests to remount /boot from within the chroot. So I did
Code:
(chroot) livecd / # umount /boot/


Mounting again, however, was not possible.
Code:

(chroot) livecd / # mount /boot/
mount: /dev/md127 is already mounted or /boot busy
       /dev/md127 is already mounted on /boot


It showed that /boot seemed to be fine then.
Code:
(chroot) livecd / # df /boot
Filesystem     1K-blocks  Used Available Use% Mounted on
/dev/md127        154501  8986    134052   7% /boot


Trying to install grub again fails but with
Code:
(chroot) livecd / # grub-install /dev/sda
Installing for i386-pc platform.
grub-install: error: disk `md127' not found.


Does somebody know how to handle this?
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Last edited by Thiemo on Wed May 10, 2017 1:54 pm; edited 1 time in total
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frostschutz
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Joined: 22 Feb 2005
Posts: 2970
Location: Germany

PostPosted: Fri May 05, 2017 2:09 pm    Post subject: Reply with quote

partition table is msdos?

maybe missing useflags for grub? (device mapper)

not sure where aufs for /boot comes from. :?

Edit: Oh, you bind the livedvd /boot into your chroot? that can't possibly be right :lol: you only do bind for proc sys dev
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Thiemo
Tux's lil' helper
Tux's lil' helper


Joined: 20 Nov 2002
Posts: 138

PostPosted: Fri May 05, 2017 2:42 pm    Post subject: Reply with quote

Eek, I finally found a bug report with debian.

Following it, I issued
Code:
(chroot) livecd / # mdadm --examine /dev/sda1
/dev/sda1:
          Magic : a92b4efc
        Version : 1.0
    Feature Map : 0x1
     Array UUID : f73b6643:8e521d5e:8d84d049:b1d75ba6
           Name : any:md_backup
  Creation Time : Fri Apr 28 17:24:49 2017
     Raid Level : raid1
   Raid Devices : 2

 Avail Dev Size : 488394720 (232.88 GiB 250.06 GB)
     Array Size : 244197184 (232.88 GiB 250.06 GB)
  Used Dev Size : 488394368 (232.88 GiB 250.06 GB)
   Super Offset : 488394736 sectors
   Unused Space : before=0 sectors, after=352 sectors
          State : clean
    Device UUID : 07cd6316:34e2c231:df35a79e:d9dc32ce

Internal Bitmap : -16 sectors from superblock
    Update Time : Wed May  3 14:54:25 2017
  Bad Block Log : 512 entries available at offset -8 sectors
       Checksum : b4c5936 - correct
         Events : 1693


   Device Role : Active device 0
   Array State : AA ('A' == active, '.' == missing, 'R' == replacing)
and
Code:
(chroot) livecd / # grub-install /dev/sda
Installing for i386-pc platform.
Installation finished. No error reported.
and
Code:
grub-install /dev/sdb
Installing for i386-pc platform.
Installation finished. No error reported.

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Last edited by Thiemo on Fri Jun 09, 2017 10:58 am; edited 1 time in total
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Thiemo
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Joined: 20 Nov 2002
Posts: 138

PostPosted: Fri May 05, 2017 4:14 pm    Post subject: Reply with quote

Dooo, just got aware that I was having /boot of the LiveDVD rebound to /mnt/gentoo/boot/!!! After a reboot grub-install worked flawlessly.
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Last edited by Thiemo on Wed Jun 07, 2017 10:21 am; edited 1 time in total
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Thiemo
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Joined: 20 Nov 2002
Posts: 138

PostPosted: Wed May 10, 2017 1:53 pm    Post subject: Reply with quote

Ok, above mentioned stuff was the cause of the problem. :-)
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