RAID1 + LVM no workee

tiny · 2008-11-10 21:43:25

Hi. I've recently installed Arch on my lappy and I liked it so much,
I decided to switch distro on my workstation also. But here the problems started.

I downloaded latest install image. I tried with both. Ftp and Core image.

This is the error I get:

:: Running Hook [raid]
:: Running Hook [keymap]
:: Loading keymap...done.
:: Running Hook [lvm2]
device-mapper:uevent: version 1.0.3
device-mapper: ioctl: 4.14.0-ioctl (2008-04-23) initialised: dm-devel@redhat.com
mknod: File exists
Scanning logical volumes...
  Reading all pysical volumes. This may take a while...
Activating logical volumes...
:: Running Hook [filesystem]
:: Loading root filesystrem module...
Attempting to create root device '/dev/mapper/array-root'
ERROR: Failed to parse block device name for '/dev/mapper/array-root'
unknown
ERROR: root fs cannot be detected.  Try using the rootfstype= kernel parameter.
Waiting for devices to settle...done.

Root device '/dev/mapper/array-root' desn't exist, attempting to create it
ERROR: Failed to parse block device name for '/dev/mapper/array-root'
ERROR: Unable to create/detect root device '/dev/mapper/array-root;
Dropping to a recovery shell ...

I've also had problems with grub installing from setup program so I installed it
mannually from grub prompt. I even did that from chrooted environment.

I can manage to chroot into my system from archlive and get a working environment after:

modprobe raid1
mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1
mdadm --assemble /dev/md1 /dev/sda3 /dev/sdb3
modbprobe dm-mod
vgscan
vgchange -ay

mount /dev/mapper/array-root /mnt/
mount /dev/mapper/array-home /mnt/home/
mount /dev/md0 /mnt/boot/

mount /dev/ /mnt/dev/ --bind
mount /sys/ /mnt/sys/ --bind
mount /proc/ /mnt/proc/ --bind

rc.conf:

#
# /etc/rc.conf - Main Configuration for Arch Linux
#

# -----------------------------------------------------------------------
# LOCALIZATION
# -----------------------------------------------------------------------
#
# LOCALE: available languages can be listed with the 'locale -a' command
# HARDWARECLOCK: set to "UTC" or "localtime"
# USEDIRECTISA: use direct I/O requests instead of /dev/rtc for hwclock
# TIMEZONE: timezones are found in /usr/share/zoneinfo
# KEYMAP: keymaps are found in /usr/share/kbd/keymaps
# CONSOLEFONT: found in /usr/share/kbd/consolefonts (only needed for non-US)
# CONSOLEMAP: found in /usr/share/kbd/consoletrans
# USECOLOR: use ANSI color sequences in startup messages
#
LOCALE="en_US.utf8"
HARDWARECLOCK="UTC"
USEDIRECTISA="no"
TIMEZONE="Europe/Ljubljana"
KEYMAP="us"
CONSOLEFONT=
CONSOLEMAP=
USECOLOR="yes"

# -----------------------------------------------------------------------
# HARDWARE
# -----------------------------------------------------------------------
#
# MOD_AUTOLOAD: Allow autoloading of modules at boot and when needed
# MOD_BLACKLIST: Prevent udev from loading these modules
# MODULES: Modules to load at boot-up. Prefix with a ! to blacklist.
#
# NOTE: Use of 'MOD_BLACKLIST' is deprecated. Please use ! in the MODULES array.
#
MOD_AUTOLOAD="yes"
#MOD_BLACKLIST=() #deprecated
MODULES=(8139cp 8139too atl1 mii slhc snd-mixer-oss snd-pcm-oss snd-hwdep snd-page-alloc snd-pcm snd-timer snd snd-hda-intel soundcore)

# Scan for LVM volume groups at startup, required if you use LVM
USELVM="yes"

# -----------------------------------------------------------------------
# NETWORKING
# -----------------------------------------------------------------------
#
# HOSTNAME: Hostname of machine. Should also be put in /etc/hosts
#
HOSTNAME="deneb"

# Use 'ifconfig -a' or 'ls /sys/class/net/' to see all available interfaces.
#
# Interfaces to start at boot-up (in this order)
# Declare each interface then list in INTERFACES
#   - prefix an entry in INTERFACES with a ! to disable it
#   - no hyphens in your interface names - Bash doesn't like it
# 
# DHCP:     Set your interface to "dhcp" (eth0="dhcp")
# Wireless: See network profiles below
#
eth0="dhcp"
INTERFACES=(eth0)

# Routes to start at boot-up (in this order)
# Declare each route then list in ROUTES
#   - prefix an entry in ROUTES with a ! to disable it
#
gateway="default gw 192.168.0.1"
ROUTES=(!gateway)
 
# Enable these network profiles at boot-up.  These are only useful
# if you happen to need multiple network configurations (ie, laptop users)
#   - set to 'menu' to present a menu during boot-up (dialog package required)
#   - prefix an entry with a ! to disable it
#
# Network profiles are found in /etc/network.d
#
# This now requires the netcfg package
#
#NETWORKS=(main)

# -----------------------------------------------------------------------
# DAEMONS
# -----------------------------------------------------------------------
#
# Daemons to start at boot-up (in this order)
#   - prefix a daemon with a ! to disable it
#   - prefix a daemon with a @ to start it up in the background
#
DAEMONS=(syslog-ng network netfs crond)

mkinitcpio.conf

# vim:set ft=sh
# MODULES
# The following modules are loaded before any boot hooks are
# run.  Advanced users may wish to specify all system modules
# in this array.  For instance:
#     MODULES="piix ide_disk reiserfs"
MODULES="pata_acpi pata_jmicron ata_generic scsi_mod ahci ata_piix"

# BINARIES
# This setting includes, into the CPIO image, and additional
# binaries a given user may wish.  This is run first, so may
# be used to override the actual binaries used in a given hook.
# (Existing files are NOT overwritten is already added)
# BINARIES are dependancy parsed, so you may safely ignore libraries
BINARIES=""

# FILES
# This setting is similar to BINARIES above, however, files are added
# as-is and are not parsed in anyway.  This is useful for config files.
# Some users may wish to include modprobe.conf for custom module options,
# like so:
#    FILES="/etc/modprobe.conf"
FILES=""

# HOOKS
# This is the most important setting in this file.  The HOOKS control the
# modules and scripts added to the image, and what happens at boot time.
# Order is important, and it is recommended that you do not change the
# order in which HOOKS are added.  Run 'mkinitcpio -H <hook name>' for
# help on a given hook.
# 'base' is _required_ unless you know precisely what you are doing.
# 'udev' is _required_ in order to automatically load modules
# 'modload' may be used in place of 'udev', but is not recommended
# 'filesystems' is _required_ unless you specify your fs modules in MODULES
# Examples:
#    This setup specifies all modules in the MODULES setting above.
#    No raid, lvm2, or encrypted root is needed.
#    HOOKS="base"
#
#    This setup will autodetect all modules for your system and should
#    work as a sane default
#    HOOKS="base udev autodetect pata scsi sata filesystems"
#
#    This is identical to the above, except the old ide subsystem is
#    used for IDE devices instead of the new pata subsystem.
#    HOOKS="base udev autodetect ide scsi sata filesystems"
#
#    This setup will generate a 'full' image which supports most systems.
#    No autodetection is done.
#    HOOKS="base udev pata scsi sata usb filesystems"
#
#    This setup assembles an pata raid array with an encrypted root FS.
#    Note: See 'mkinitcpio -H raid' for more information on raid devices.
#    HOOKS="base udev pata raid encrypt filesystems"
#
#    This setup loads an lvm2 volume group on a usb device.
#    HOOKS="base udev usb lvm2 filesystems"
HOOKS="base udev autodetect pata scsi sata raid usbinput keymap lvm2 filesystems"

menu.lst

# Config file for GRUB - The GNU GRand Unified Bootloader
# /boot/grub/menu.lst

# DEVICE NAME CONVERSIONS 
#
#  Linux           Grub
# -------------------------
#  /dev/fd0        (fd0)
#  /dev/hda        (hd0)
#  /dev/hdb2       (hd1,1)
#  /dev/hda3       (hd0,2)
#

#  FRAMEBUFFER RESOLUTION SETTINGS
#     +-------------------------------------------------+
#          | 640x480    800x600    1024x768   1280x1024
#      ----+--------------------------------------------
#      256 | 0x301=769  0x303=771  0x305=773   0x307=775
#      32K | 0x310=784  0x313=787  0x316=790   0x319=793
#      64K | 0x311=785  0x314=788  0x317=791   0x31A=794
#      16M | 0x312=786  0x315=789  0x318=792   0x31B=795
#     +-------------------------------------------------+

# general configuration:
timeout   5
default   0
color light-blue/black light-cyan/blue

# boot sections follow
# each is implicitly numbered from 0 in the order of appearance below
#
# TIP: If you want a 1024x768 framebuffer, add "vga=773" to your kernel line.
#
#-*

# (0) Arch Linux
title  Arch Linux
root   (hd0,0)
kernel /vmlinuz26 root=/dev/mapper/array-root ro vga=773
initrd /kernel26.img

# (1) Arch Linux
title  Arch Linux Fallback
root   (hd0,0)
kernel /vmlinuz26 root=/dev/mapper/array-root ro
initrd /kernel26-fallback.img

# (1) Windows
#title Windows
#rootnoverify (hd0,0)
#makeactive
#chainloader +1

fdisk -l:

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000c8e50

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1          13      104391   fd  Linux raid autodetect
/dev/sda2              14          77      514080   82  Linux swap / Solaris
/dev/sda3              78       60801   487765530   fd  Linux raid autodetect

Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0007b26b

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1          13      104391   fd  Linux raid autodetect
/dev/sdb2              14          77      514080   82  Linux swap / Solaris
/dev/sdb3              78       60801   487765530   fd  Linux raid autodetect

vgdisplay

  --- Volume group ---
  VG Name               array
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               2
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               465.17 GB
  PE Size               4.00 MB
  Total PE              119083
  Alloc PE / Size       119083 / 465.17 GB
  Free  PE / Size       0 / 0   
  VG UUID               1i110D-iyJa-oRdl-7ikZ-Nzm9-dia6-sMieWh

lvdisplay

 
  --- Logical volume ---
  LV Name                /dev/array/root
  VG Name                array
  LV UUID                iBx9bO-KCSJ-lQCN-Itpo-PQ76-2qEA-d1osiN
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                50.00 GB
  Current LE             12800
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0
   
  --- Logical volume ---
  LV Name                /dev/array/home
  VG Name                array
  LV UUID                HtVebG-XjUj-O3Ju-xhrm-Zwy4-IKwE-p57DuR
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                415.17 GB
  Current LE             106283
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:1

What do you think? Where did I go wrong?

vah · 2008-11-15 02:34:48

I just got my very similar configuration to work here. The only thing I find missing is that you don't specify the RAID array holding your root file system at the kernel command line. (http://wiki.archlinux.org/index.php/Mki … Using_raid) Change that line in your menu.lst to:

kernel /vmlinuz26 root=/dev/mapper/array-root ro vga=773 md=1,/dev/sda3,/dev/sdb3

and it _should_ find the root and boot correctly.

iBertus · 2008-11-15 05:39:44

vah is correct, the md arrays must be added to the kernel command line in order for the kernel to find the root filesystem on boot.

Arch Linux

#1 2008-11-10 21:43:25

RAID1 + LVM no workee

#2 2008-11-15 02:34:48

Re: RAID1 + LVM no workee

#3 2008-11-15 05:39:44

Re: RAID1 + LVM no workee

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