RAID1 Grub Boot problem FC3

From: Alex _at_ Avantel Systems (_at_)
Date: 07/13/05

  • Next message: Kam Leo: "Re: Installing FC4 from iso images" 
    To: For users of Fedora Core releases <fedora-list@redhat.com>
Date: Wed, 13 Jul 2005 09:07:43 -0400

    I have not been able to boot my system since a raid disk problem was fixed.
    When booting the system, I end up in a grub shell and can then manually tell
    grub where to find the kernel and initrd and then it will boot. However,
    none of the methods described in the various Howtos will get the full boot
    process going again. Is there some special trick I'm missing? Here's more
    detail;

    I have raid configured like this;

    hda
    /dev/hda1 200M type fd (Linux Raid) (bootable)
    /dev/hda2 70G type fd ( " )
    /dev/hda3 1G type 82 (swap)

    hdc
    /dev/hdc1 200M type fd (bootable)
    /dev/hdc2 70G type fd
    /dev/hdc3 1G type 82

    /dev/md1 hda1 & hdc1 /boot
    /dev/md0 hda2 & hdc2 /

    I used the grub, raid, boot howto to set up the bootable 2nd disk.

    grub> device (hd0) /dev/hda
    grub> root (hd0,0)
    grub> setup (hd0)
    grub> device (hd1) /dev/hdc
    grub> root (hd1,0)
    grub> setup (hd1)

    All without any error messages (but makes no apparent difference to the boot
    process)

    My grub.conf file has this;

    default=0
    fallback=1
    timeout=5
    hiddenmenu
    title Fedora Core (2.6.11-1.14_FC3)
            splashimage=(hd0,0)/grub/splash.xpm.gz
            root (hd0,0)
            kernel /vmlinuz-2.6.11-1.14_FC3 ro root=/dev/md0 rhgb quiet
            initrd /initrd-2.6.11-1.14_FC3.img
    title Fallback Fedora Core (2.6.11-1.14_FC3)
            splashimage=(hd1,0)/grub/splash.xpm.gz
            root (hd1,0)
            kernel (hd1,0)/vmlinuz-2.6.11-1.14_FC3 ro root=/dev/md0 rhgb quiet
            initrd (hd1,0)/initrd-2.6.11-1.14_FC3.img

    But when I try to boot the system, I get dumped into a grub shell. If I then
    type in the "kernel" and "initrd" lines above and then type "boot", the
    system boots OK.

    Linux Rescue detects the install with no problem and mounts it
    to /mnt/sysimage, and then the RAID arrays are also fine.

    This all worked fine after the initial install but started behaving this way
    after a disk replacement using mdadm.

    Any help appreciated . . . TIA

    Alex
    ==== 

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