setup-swraid1-on-a-running-lvm-system-ubuntu-10.04 - SDB dont boot but SDA yes

Discussion in 'HOWTO-Related Questions' started by lucho115, Jun 15, 2011.

  1. lucho115

    lucho115 New Member

    Hi, iam try to do a setup thats descripted in this how to:
    http://www.howtoforge.com/how-to-se...-system-incl-grub2-configuration-ubuntu-10.04

    All was ok, but when iam trying to tested a get boot from sda if remove sdb, but if remove sda, sdb dont boot, and say these: cant find the device 8f67c746-fcb9-4735-a3c3-deb113204ae7 and give me a grub console.
    So, i reconect sda, boot ok, and run grub-install sda and grub-install sdb again, and then try again to remove sda, now i get that the system reboot when charging grub, so waht happening?
    to reference the 2 disk are tested and smart mark like ok without problems.
    I put sda ok, and boot ok, but why i cant boot from sdb?
    thks and sorry about my english.
    bye
     
  2. falko

    falko Super Moderator Howtoforge Staff Moderator HowtoForge Supporter ISPConfig Developer

    Did you do the following (I quote from the tutorial - page 4)?

     
  3. lucho115

    lucho115 New Member

    Yes falko, i do that, but anyway the system reboot when load grub.
    I also build the raid again doing this:

    Code:
    mdadm --manage /dev/md0 --fail /dev/sdb1
    mdadm --manage /dev/md1 --fail /dev/sdb5
    mdadm --manage /dev/md0 --remove /dev/sdb1
    mdadm --manage /dev/md1 --remove /dev/sdb5
    shutdown -h now
    sfdisk -d /dev/sda | sfdisk --force /dev/sdb
    mdadm --zero-superblock /dev/sdb1
    mdadm --zero-superblock /dev/sdb5
    mdadm -a /dev/md0 /dev/sdb1
    mdadm -a /dev/md1 /dev/sdb5
    grub-install /dev/sda
    grub-install /dev/sdb
    
    Then reboot, all ok, so remove again sda, put sdb in sda place, and get the same, the system reboot loading grub, but if i insert sda its boot ok, also try sda in sdb place and boot ok.
    Any other idea?
    thks
     
  4. falko

    falko Super Moderator Howtoforge Staff Moderator HowtoForge Supporter ISPConfig Developer

    Which distribution do you use?

    What's in /etc/fstab and /boot/grub/grub.cfg?
     
  5. lucho115

    lucho115 New Member

    Falko thanks for post here, iam using ubuntu 10.04.2 server, and the files:

    /etc/fstab
    Code:
    # /etc/fstab: static file system information.
    #
    # Use 'blkid -o value -s UUID' to print the universally unique identifier
    # for a device; this may be used with UUID= as a more robust way to name
    # devices that works even if disks are added and removed. See fstab(5).
    #
    # <file system> <mount point>   <type>  <options>       <dump>  <pass>
    proc            /proc           proc    nodev,noexec,nosuid 0       0
    /dev/mapper/mysql-root /               ext4    errors=remount-ro 0       1
    # /boot was on /dev/sda1 during installation
    #UUID=8f67c746-fcb9-4735-a3c3-deb113204ae7 /boot           ext2    defaults        0       2
    /dev/md0 /boot           ext2    defaults        0       2
    /dev/mapper/mysql-swap_1 none            swap    sw              0       0
    
    /boot/grub/grub.cfg
    Code:
    #
    # DO NOT EDIT THIS FILE
    #
    # It is automatically generated by /usr/sbin/grub-mkconfig using templates
    # from /etc/grub.d and settings from /etc/default/grub
    #
    
    ### BEGIN /etc/grub.d/00_header ###
    if [ -s $prefix/grubenv ]; then
      load_env
    fi
    set default="0"
    if [ ${prev_saved_entry} ]; then
      set saved_entry=${prev_saved_entry}
      save_env saved_entry
      set prev_saved_entry=
      save_env prev_saved_entry
      set boot_once=true
    fi
    
    function savedefault {
      if [ -z ${boot_once} ]; then
        saved_entry=${chosen}
        save_env saved_entry
      fi
    }
    
    function recordfail {
      set recordfail=1
      if [ -n ${have_grubenv} ]; then if [ -z ${boot_once} ]; then save_env recordfail; fi; fi
    }
    insmod raid
    insmod mdraid
    insmod lvm
    insmod ext2
    set root='(mysql-root)'
    search --no-floppy --fs-uuid --set 20055c28-f960-44bc-80d4-1a0bd714ab5a
    if loadfont /usr/share/grub/unicode.pf2 ; then
      set gfxmode=640x480
      insmod gfxterm
      insmod vbe
      if terminal_output gfxterm ; then true ; else
        # For backward compatibility with versions of terminal.mod that don't
        # understand terminal_output
        terminal gfxterm
      fi
    fi
    insmod raid
    insmod mdraid
    insmod ext2
    set root='(md0)'
    search --no-floppy --fs-uuid --set 6348ca9c-7027-4d2b-9452-05745c0f2acb
    set locale_dir=($root)/grub/locale
    set lang=es
    insmod gettext
    if [ ${recordfail} = 1 ]; then
      set timeout=-1
    else
      set timeout=10
    fi
    ### END /etc/grub.d/00_header ###
    
    ### BEGIN /etc/grub.d/05_debian_theme ###
    set menu_color_normal=white/black
    set menu_color_highlight=black/light-gray
    ### END /etc/grub.d/05_debian_theme ###
    
    ### BEGIN /etc/grub.d/10_linux ###
    menuentry 'Ubuntu, con Linux 2.6.32-32-generic-pae' --class ubuntu --class gnu-linux --class gnu --class os {
    	recordfail
    	insmod raid
    	insmod mdraid
    	insmod ext2
    	set root='(md0)'
    	search --no-floppy --fs-uuid --set 6348ca9c-7027-4d2b-9452-05745c0f2acb
    	linux	/vmlinuz-2.6.32-32-generic-pae root=/dev/mapper/mysql-root ro   quiet
    	initrd	/initrd.img-2.6.32-32-generic-pae
    }
    menuentry 'Ubuntu, con Linux 2.6.32-32-generic-pae (modo recuperación)' --class ubuntu --class gnu-linux --class gnu --class os {
    	recordfail
    	insmod raid
    	insmod mdraid
    	insmod ext2
    	set root='(md0)'
    	search --no-floppy --fs-uuid --set 6348ca9c-7027-4d2b-9452-05745c0f2acb
    	echo	'Cargando Linux 2.6.32-32-generic-pae ...'
    	linux	/vmlinuz-2.6.32-32-generic-pae root=/dev/mapper/mysql-root ro single 
    	echo	'Cargando el disco RAM inicial...'
    	initrd	/initrd.img-2.6.32-32-generic-pae
    }
    menuentry 'Ubuntu, con Linux 2.6.32-28-generic-pae' --class ubuntu --class gnu-linux --class gnu --class os {
    	recordfail
    	insmod raid
    	insmod mdraid
    	insmod ext2
    	set root='(md0)'
    	search --no-floppy --fs-uuid --set 6348ca9c-7027-4d2b-9452-05745c0f2acb
    	linux	/vmlinuz-2.6.32-28-generic-pae root=/dev/mapper/mysql-root ro   quiet
    	initrd	/initrd.img-2.6.32-28-generic-pae
    }
    menuentry 'Ubuntu, con Linux 2.6.32-28-generic-pae (modo recuperación)' --class ubuntu --class gnu-linux --class gnu --class os {
    	recordfail
    	insmod raid
    	insmod mdraid
    	insmod ext2
    	set root='(md0)'
    	search --no-floppy --fs-uuid --set 6348ca9c-7027-4d2b-9452-05745c0f2acb
    	echo	'Cargando Linux 2.6.32-28-generic-pae ...'
    	linux	/vmlinuz-2.6.32-28-generic-pae root=/dev/mapper/mysql-root ro single 
    	echo	'Cargando el disco RAM inicial...'
    	initrd	/initrd.img-2.6.32-28-generic-pae
    }
    ### END /etc/grub.d/10_linux ###
    
    ### BEGIN /etc/grub.d/20_memtest86+ ###
    menuentry "Memory test (memtest86+)" {
    	insmod raid
    	insmod mdraid
    	insmod ext2
    	set root='(md0)'
    	search --no-floppy --fs-uuid --set 6348ca9c-7027-4d2b-9452-05745c0f2acb
    	linux16	/memtest86+.bin
    }
    menuentry "Memory test (memtest86+, serial console 115200)" {
    	insmod raid
    	insmod mdraid
    	insmod ext2
    	set root='(md0)'
    	search --no-floppy --fs-uuid --set 6348ca9c-7027-4d2b-9452-05745c0f2acb
    	linux16	/memtest86+.bin console=ttyS0,115200n8
    }
    ### END /etc/grub.d/20_memtest86+ ###
    
    ### BEGIN /etc/grub.d/30_os-prober ###
    if [ ${timeout} != -1 ]; then
      if keystatus; then
        if keystatus --shift; then
          set timeout=-1
        else
          set timeout=0
        fi
      else
        if sleep --interruptible 3 ; then
          set timeout=0
        fi
      fi
    fi
    ### END /etc/grub.d/30_os-prober ###
    
    ### BEGIN /etc/grub.d/40_custom ###
    # This file provides an easy way to add custom menu entries.  Simply type the
    # menu entries you want to add after this comment.  Be careful not to change
    # the 'exec tail' line above.
    ### END /etc/grub.d/40_custom ###
    
    i will wait for help. tks.
     
  6. lucho115

    lucho115 New Member

    Please, any help is welcome.
     
  7. lucho115

    lucho115 New Member

    OK, i forget to say that wheni rebuild the raid again this happen:

    Code:
    mdadm --manage /dev/md0 --fail /dev/sdb1
    mdadm --manage /dev/md1 --fail /dev/sdb5
    mdadm --manage /dev/md0 --remove /dev/sdb1
    mdadm --manage /dev/md1 --remove /dev/sdb5
    
    I run :
    Code:
    cat /proc/mdstat
    and i get:

    Code:
    root@mysql:~# cat /proc/mdstat
    Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
    md0 : active raid1 sda1[0] 
          248768 blocks [2/1] [U_]
    
    md1 : active raid1 sda5[0]
          79792064 blocks [2/1] [U_]
    
    unused devices: <none>
    root@mysql:~#
    So, i reboot :

    Code:
    shutdown -h now
    And i do again:
    Code:
    cat /proc/mdstat
    , and i get :

    Code:
    root@mysql:~# cat /proc/mdstat
    Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
    md0 : active raid1 sda1[0] sdb1[0]
          248768 blocks [2/1] [UU]
    
    md1 : active raid1 sda5[0]
          79792064 blocks [2/1] [U_]
    
    unused devices: <none>
    root@mysql:~#
    Why md0 is again build?
    I removed again :

    Code:
    mdadm --manage /dev/md0 --fail /dev/sdb1
    mdadm --manage /dev/md0 --remove /dev/sdb1
    Now the sdb1 is removed, but i dont reboot because md0 will be rebuild again, so follow with this:

    Code:
    sfdisk -d /dev/sda | sfdisk --force /dev/sdb
    mdadm --zero-superblock /dev/sdb1
    mdadm --zero-superblock /dev/sdb5
    mdadm -a /dev/md0 /dev/sdb1
    mdadm -a /dev/md1 /dev/sdb5
    grub-install /dev/sda
    grub-install /dev/sdb
    
    This can explain the booting problem? or give you a kind of track?
    thks
     
  8. falko

    falko Super Moderator Howtoforge Staff Moderator HowtoForge Supporter ISPConfig Developer

    Is there a reference to 8f67c746-fcb9-4735-a3c3-deb113204ae7 anywhere in a file in the /boot/grub/ or /etc/grub.d/ directories?
     
  9. lucho115

    lucho115 New Member

    Nop, nothing, only in /etc/fstab this line:

    Code:
    #UUID=8f67c746-fcb9-4735-a3c3-deb113204ae7 /boot           ext2    defaults        0       2
    but, is commented, so doesnt used.
     
  10. falko

    falko Super Moderator Howtoforge Staff Moderator HowtoForge Supporter ISPConfig Developer

    Can you run
    Code:
    update-grub
    and
    Code:
    update-initramfs -u
    again?
     
  11. lucho115

    lucho115 New Member

    i didit, but i still have the same problem.
     
  12. lucho115

    lucho115 New Member

    i change the 2 disks, and i have installed ubuntu server 10.04.2, and build the raid with the installer, and all work ok. The 2 disks can boot. In other hand this is a new system and i need to use the other system. Any way this server is a mysql server, so i have installed only installesd apache, mysql, phpmyadmin, openssh, and nothing more. So i can backup the mysql bases, and used in the new system, but i have a problem that maybe the correct will be open other thread, and i will, but the problem is the following: The old system have the same packages installed, and at boot its consume 120 mb of ram, and the new one 230mb of ram, why i can happend?
    thks
     

Share This Page