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Hi, |
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I'm doing an install roughly following this guide: |
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http://www.gentoo.org/doc/en/gentoo-x86+raid+lvm2-quickinstall.xml |
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Differences: |
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1) AMD64 |
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2) A non-RAID Gentoo install already resides /dev/sda |
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3) I'm doing the RAID install on /dev/sdb3 & /dev/sdc3 |
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4) RAID1 only |
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5) No LVM |
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6) Shared /boot & grub |
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7) grub not installed for the RAID installation as I am using the |
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non-raid grub to boot options |
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|
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The install is complete but it won't boot. grub finds the kernel |
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and starts booting but then I get the typical VFS file sync error as |
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the kernel starts looking for the install on /dev/md3. What I'm not |
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understanding is how does the boot process get the information |
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required to assemble the RAID device. By hand in the non-RAID install |
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I do this: |
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|
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keeper ~ # mdadm -A /dev/md3 /dev/sdb3 /dev/sdc3 |
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mdadm: /dev/md3 has been started with 2 drives. |
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keeper ~ # cat /proc/mdstat |
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Personalities : [raid1] |
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md3 : active raid1 sdb3[0] sdc3[1] |
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52436092 blocks super 1.1 [2/2] [UU] |
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|
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unused devices: <none> |
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keeper ~ # |
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but when I try to boot the RAID install it says it cannot find /dev/md3. |
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From within the non-RAID install I can mount md3. It's got the RAID |
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install and I can chroot into it and continue doing install like |
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things so all the data is there but I cannot boot it. |
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|
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I don't see what allows grub (I gruss) to start up mdadm, assemble |
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the device and then continue the boot. What am I missing? |
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grub.conf and fdisk info follows. |
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Thanks, |
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Mark |
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keeper ~ # cat /boot/grub/grub.conf |
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default 0 |
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timeout 30 |
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splashimage=(hd0,0)/boot/grub/splash.xpm.gz |
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|
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title /dev/sda1 Gentoo Linux 2.6.33-gentoo |
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root (hd0,0) |
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kernel (hd0,0)/boot/bzImage-2.6.33-gentoo root=/dev/sda3 |
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|
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title /dev/sda1 Gentoo Linux 2.6.33-gentoo-RAID |
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root (hd0,0) |
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kernel (hd0,0)/boot/bzImage-2.6.33-gentoo-RAID root=/dev/md3 |
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keeper ~ # |
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keeper ~ # fdisk -l /dev/sda /dev/sdb /dev/sdc |
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Disk /dev/sda: 1000.2 GB, 1000204886016 bytes |
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255 heads, 63 sectors/track, 121601 cylinders |
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Units = cylinders of 16065 * 512 = 8225280 bytes |
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Disk identifier: 0x1d23ae47 |
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|
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Device Boot Start End Blocks Id System |
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/dev/sda1 * 1 14 112423+ 83 Linux |
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/dev/sda2 16 538 4200997+ 82 Linux swap / Solaris |
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/dev/sda3 2048 5964 31463302+ 83 Linux |
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/dev/sda4 6000 121601 928573065 5 Extended |
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/dev/sda5 6000 19054 104864256 83 Linux |
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|
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Disk /dev/sdb: 500.1 GB, 500107862016 bytes |
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255 heads, 63 sectors/track, 60801 cylinders |
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Units = cylinders of 16065 * 512 = 8225280 bytes |
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Disk identifier: 0xa06ef201 |
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|
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Device Boot Start End Blocks Id System |
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/dev/sdb1 1 14 112423+ 83 Linux |
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/dev/sdb2 16 538 4200997+ 82 Linux swap / Solaris |
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/dev/sdb3 544 7071 52436160 fd Linux raid autodetect |
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Disk /dev/sdc: 500.1 GB, 500107862016 bytes |
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255 heads, 63 sectors/track, 60801 cylinders |
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Units = cylinders of 16065 * 512 = 8225280 bytes |
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Disk identifier: 0x2ab15637 |
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|
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Device Boot Start End Blocks Id System |
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/dev/sdc1 1 14 112423+ 83 Linux |
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/dev/sdc2 16 538 4200997+ 82 Linux swap / Solaris |
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/dev/sdc3 544 7071 52436160 fd Linux raid autodetect |
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keeper ~ # |
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From the RAID1 fstab |
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/dev/sda1 /boot ext2 noauto,noatime 1 2 |
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/dev/md3 / ext3 noatime 0 1 |
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/dev/sda2 none swap sw 0 0 |
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/dev/sdb2 none swap sw 0 0 |
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/dev/sdc2 none swap sw 0 0 |
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