Software RAID1 on Debian Sarge
Hi,
I have been trying to get Software RAID1 running on my Debian Sarge. I've been reading alot and looking at alot of howto's but I still fail to get it working :( In my case for now they are on the same IDE bus but I will change this later. Here is what I'm doing : ---------------------------FIRST STEP ------------------------------------------ My First Harddrive : fdisk /dev/hda -l Disk /dev/hda: 41.1 GB, 41110142976 bytes 255 heads, 63 sectors/track, 4998 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/hda1 * 1 851 6835626 83 Linux /dev/hda2 852 4998 33310777+ f W95 Ext'd (LBA) /dev/hda5 852 1028 1421721 82 Linux swap /dev/hda6 1029 4998 31888993+ 83 Linux I don't know what the W95 Ext'd (LBA) is doing there but it looks like my SWAP device is on the same cylinders. So I don't think this is a problem. This is my second drive : fdisk /dev/hdb -l Disk /dev/hdb: 41.1 GB, 41110142976 bytes 255 heads, 63 sectors/track, 4998 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/hdb1 * 1 851 6835626 fd Linux raid autodetect /dev/hdb2 852 1028 1421721 fd Linux raid autodetect /dev/hdb3 1029 4998 31888993+ fd Linux raid autodetect --------------------------- SECOND STEP ---------------------------------- mdadm --create /dev/md0 --level 1 --raid-devices=2 missing /dev/hdb1 mdadm --create /dev/md1 --level 1 --raid-devices=2 missing /dev/hdb2 mdadm --create /dev/md2 --level 1 --raid-devices=2 missing /dev/hdb3 Result : cat /proc/mdstat Personalities : [raid1] read_ahead 1024 sectors md2 : active raid1 ide/host0/bus0/target1/lun0/part3[0] 31888896 blocks [2/1] [U_] md1 : active raid1 ide/host0/bus0/target1/lun0/part2[0] 1421632 blocks [2/1] [U_] md0 : active raid1 ide/host0/bus0/target1/lun0/part1[0] 6835520 blocks [2/1] [U_] unused devices: <none> Everything looks to be alright. -----------------------------THIRD STEP ------------------------------------ mkfs.ext3 /dev/md0 mkfs.ext3 /dev/md1 mkfs.ext3 /dev/md2 Now I mount the drives mount /dev/md0 /mnt/root/ mount /dev/md2 /mnt/home/ And I change my initrd (/etc/mkinitrd/mkinitrd.conf) to ROOT=/dev/md0 This should be the boot device right? Then : mkinitrd -o /boot/initrd.img-2.4.27-1-386 2.4.27-1-386-raid And make the entry in the /boot/grub/menu.lst to boot from this : title Debian GNU/Linux, kernel 2.4.27-1-386 RAID1 root (hd0,0) kernel /boot/vmlinuz-2.4.27-1-386 root=/dev/md0 ro initrd /boot/initrd.img-2.4.27-1-386-raid savedefault boot ---------------------------------- FOURTH STEP ------------------------------- COPY the data rsync -auHx --exclude=/proc/ --exclude=/mnt /* /mnt/root/ rsync -auHx --exclude=/proc/ /home/* /mnt/home/ mkdir /mnt/root/proc chmod 555 /mnt/root/proc ---------------------------------- FIFTH STEP ------------------------------- I change my /mnt/root/etc/fstab file to : # /etc/fstab: static file system information. # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc defaults 0 0 #/dev/hda1 / ext3 defaults,errors=remount-ro 0 1 #/dev/hda6 /home ext3 defaults 0 2 #/dev/hda5 none swap sw 0 0 /dev/md0 / ext3 defaults,errors=remount-ro 0 1 /dev/md2 /home ext3 defaults 0 2 /dev/md1 none swap sw 0 0 I reboot and I select the new boot option. Then I only see /dev/md0 and not the others? So I get errors because he can't find the home directory and so on. Why doesn't he find md1 and md2 ?? I hope I included all required information. If not please ask ;) Any help is welcome! Thanks in advance! Added This is in my initrd/script file when I tell mkinitrd not to delete the directory when making the file : ROOT=/dev/md0 unload_unused_ide 'yes' pdc202xx_new adma100 aec62xx alim15x3 amd74xx atiixp cmd640 cmd64x cs5530 cy82c693 generic hpt34x hpt366 ns87415 opti621 pdc202xx_old piix rz1000 sc1200 serverworks siimage sis5513 slc90e66 triflex trm290 via82cxxx mdadm -A /devfs/md/0 -R -u c74c9a07:3dd634d7:1deda842:01e9dd44 /dev/hdb1 It only adds md/0 ? Shouldn't this file include lines for all 3 devices? |
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