Intallation with Raid 1, LVM and Syslinux

Jo · 2012-08-28 15:37:49

After rebuilding an image and configuring syslinux, at the boot, I've got the following result.

This came after the RAID, LVM and /boot mounting messages.

ERROR: Boot device mounted successfully, but /sbin/init does not exist. Bailing out, you are on your own. Good luck.
/bin/sh: can't access tty: job control turned off

But /sbin/init exists

As required in the wiki documentation for RAID and LVM, I've put in mkinitcpio "dm_mod" MODULES and "mdadm_udev and lvm2" HOOKS/

/boot is on non-raid partition.

Do you have any idea what it is wrong ? mkinitcpio or syslinux ?

jasonwryan · 2012-08-28 19:03:48

Without seeing your syslinux.cfg it is difficult to say...

Jo · 2012-08-29 09:12:55

I've forgotten to say that
- the disk is partionned in GPT as recommended in the RAID and LVM wiki.
- messages at the boot step :

:: running hook [udev]
:: Trigggering uvents ...
:: running hook [lvm2]
Activating Logic Volume
  1 logical volume(s) in volumegroup"VolGroupArray" now active
.....
:: mounting '/dev/sda19' on real root
:: running cleanup hook [udev] 
ERROR: Boot device mounted successfully, but /sbin/init does not exist. Bailing out, you are on your own. Good luck.
/bin/sh: can't access tty: job control turned off

Here are more information :

* syslinux.conf

--------------
DEFAULT arch
PROMPT 0       
TIMEOUT 50
UI menu.c32
LABEL arch
	MENU LABEL Arch Linux
	LINUX ../vmlinuz-linux
	APPEND root=/dev/sda19 ro 
	INITRD ../initramfs-linux.img

* mkinitcpio.conf
-----------------
MODULES="dm_mod"
BINARIES=""
FILES=""
HOOKS="base udev autodetect pata scsi sata mdadm_udev lvm2 filesystems usbinput"

* fstab
-------
/dev/mapper/VolGroupArray-lvroot	/         	ext4      	rw,relatime,data=ordered	0 1
/dev/sda19          	/boot     	ext4      	rw,relatime,stripe=4,data=ordered	0 2
/dev/mapper/VolGroupArrayOpt-lvopt	/opt      	ext4      	rw,relatime,data=ordered	0 2
/dev/mapper/VolGroupArrayExport-lvexport	/export   	ext4      	rw,relatime,data=ordered	0 2
/dev/mapper/VolGroupArrayHome-lvhome	/home     	ext4      	rw,relatime,data=ordered	0 2
/dev/mapper/VolGroupArrayTmp-lvtmp	/tmp      	ext4      	rw,relatime,data=ordered	0 2
/dev/mapper/VolGroupArrayVar-lvvar	/var      	ext4      	rw,relatime,data=ordered	0 2
/dev/mapper/VolGroupArrayBoot-lvboot	/bootBackup	ext4      	rw,relatime,data=ordered	0 2
/dev/dm-7           	none      	swap      	defaults  	0 0

Last edited by jasonwryan (2012-08-29 18:42:04)

jasonwryan · 2012-08-29 09:16:41

Please use code tags when pasting into the boards:
https://wiki.archlinux.org/index.php/Fo … s_and_Code

Your APPEND line looks wrong: it should list the logical volume, like root=/dev/mapper/VolGroup-Array-lvroot

Jo · 2012-08-29 11:09:09

Fine, it's woorking now.

But a bug can be reported.

When the command "syslinux-install_update" is executed, the file is not correctly filled at the level of the APPEND tag : it tkes the boot partition and not the root partition (see the case).

Thank you,

Jo · 2012-08-29 11:23:10

I've tried to install /boot on Logical Volume based on an array raid1 (2 partitions : /dev/sda2 and /dev/sda3) but it failed.

It not possible to use syslinux-install_update because it can't mark the partition active with the boot flag.

I used the following command as recommended by the wiki

sgdisk /dev/sda --attributes=2:set:2
sgdisk /dev/sda --attributes=3:set:2

Is it possible to boot on /boot on an array raid1 ?

jasonwryan · 2012-08-29 18:40:55

Jo wrote:

Is it possible to boot on /boot on an array raid1 ?

Sure. Syslinux will detect a Raid setup and install to both devices:

Detected RAID on /boot - installing Syslinux with –raid
Syslinux install successful
Boot Flag Set - /dev/sda1
Boot Flag Set - /dev/sdb1
Installed MBR (/usr/lib/syslinux/mbr.bin) to /dev/sda
Installed MBR (/usr/lib/syslinux/mbr.bin) to /dev/sdb

Also, I put your code tags in: do it yourself next time please...

Jo · 2012-08-30 19:52:46

I am doing raid 1 on the same disk (not very good but better that doing no raid)

So, I followed the instructions but doing them on the same disk (except install MBR on only one disk) and I obtained the message at the boot :

Multiple active partitions

Afterwards, I removed the boot flag on the second partitions making the raid 1 array, the new message is

Booting...
Missing OS

Is it really possible to boot on a raid 1 array with 2 partitions on the same disk ?

Arch Linux

#1 2012-08-28 15:37:49

Intallation with Raid 1, LVM and Syslinux

#2 2012-08-28 19:03:48

Re: Intallation with Raid 1, LVM and Syslinux

#3 2012-08-29 09:12:55

Re: Intallation with Raid 1, LVM and Syslinux

#4 2012-08-29 09:16:41

Re: Intallation with Raid 1, LVM and Syslinux

#5 2012-08-29 11:09:09

Re: Intallation with Raid 1, LVM and Syslinux

#6 2012-08-29 11:23:10

Re: Intallation with Raid 1, LVM and Syslinux

#7 2012-08-29 18:40:55

Re: Intallation with Raid 1, LVM and Syslinux

#8 2012-08-30 19:52:46

Re: Intallation with Raid 1, LVM and Syslinux

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