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Heping He wrote: |
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> Hi, I tried to install gentoo on my AMD 64 dual core machine. It has |
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> four 500 GB HDs. I followed the instruction on |
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> http://www.gentoo.org/doc/en/gentoo-x86+raid+lvm2-quickinstall.xml. I |
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> replaced /dev/md4 with raid5 instead of raid0. Here is the list of |
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> each HD's partitiion: |
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> |
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> /dev/sda: |
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> partition #, boot start end type |
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> 1 * 1 18 fd |
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> 2 19 361 fd |
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> 3 362 end fd |
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> |
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> /dev/sdb |
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> partition #, boot start end type |
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> 1 1 361 82 |
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> 2 362 end fd |
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> |
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> /dev/sdc is the same to /dev/sda, and /dev/sdd = /dev/sdb |
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> |
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> I created /dev/md1, /dev/md3 and /dev/md4: |
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> mknod /dev/md1 b 9 1 |
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> mknod /dev/md3 b 9 3 |
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> mknod /dev/md4 b 9 4 |
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> |
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> and then form raid: |
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> mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/sda1 /dev/sdc1 |
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> mdadm --create /dev/md3 --level=1 --raid-devices=2 /dev/sda2 /dev/sdc2 |
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> mdadm --create /dev/md4 --level=5 --raid-devices=4 /dev/sda3 /dev/sdb2 |
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> /dev/sdc3 /dev/sdd2 |
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> |
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> /dev/sdb1 and /dev/sdd1 forms the swap space |
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> |
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> mount: |
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> mount /dev/md3 /mnt/gentoo |
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> mount /dev/md1 /mnt/gentto/boot |
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> |
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> /dev/md4 is for lvm2 and /usr, /home, /opt and other common unix dir |
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> are created there |
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> |
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> after chroot and emerge, I issued emerge grub and modified |
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> /boot/grub/grub.conf |
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> |
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> default 0 |
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> timeout 10 |
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> |
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> title gentoo |
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> root (hd0,0) |
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> kernel /boot/kernel root=/dev/md3 |
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> |
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> and issue grub |
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> grub> root (hd0,0) |
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> .... |
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> grub> setup (hd0) |
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> .... |
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> grub> root (hd2,0) |
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> ..... |
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> grub> setup (hd2) |
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> ..... |
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> grub> quit |
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> |
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> When I reboot, the kernel issued a panic msg: it says can't read |
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> /dev/md/3 or (hd2,0) is invalid device. |
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> |
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> Any idea what went wrong? |
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> |
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> Thanks in advance for any suggestion. |
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> |
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> --HH |
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I'm running a similar RAID setup and I found that I must add " |
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root=/dev/md3 md=3,sda3,sdb3,hda3 ". It seems that md3 must be |
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defined. At least I had kernel panics until I added this. |
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|
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Chuck |
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