I set up raid 1 (2 SATA disks) using mdadm. The partition table description is as follows:

SATA disk 1:

/dev/sda1 /boot 790M Linux raid autodetect
/dev/sda2

Hi all,

I set up raid 1 using mdadm with 2 SATA disks
The partition table for SATA drive A details:

/dev/sda1 /boot Linux raid autodetect
/dev/sda2 Extended
/dev/sda5 / Linux raid autodetect
/dev/sda6 swap Linux swap
/dev/sda7 /usr Linux
/dev/sda8 /var Linux
/dev/sda9 /home Linux
/dev/sda10 /tmp Linux

Partition table for SATA drive B is same as SATA drive A

The set up as follows:
# mknod /dev/md1 b 9 1
# mdadm --create /dev/md0 --level=1 --raid-devices=2 missing /dev/sdb1
# mdadm --create /dev/md1 --level=1 --raid-devices=2 missing /dev/sdb5
# mdadm --examine --scan >> /etc/mdadm.conf

- The output /proc/mdsdtat is normal

# mkreiserfs /dev/md0
# mkreiserfs /dev/md1
# mkdir /mnt/md0
# mkdir /mnt/md1
# mount /dev/md0 /mnt/md0
# mount /dev/md1 /mnt/md1
# cp -ax /boot /mnt/md0
# cp -ax / /mnt/md1

- 2 lines below were added to /etc/fstab (on SATA drive A)
/dev/md0 /mnt/md0 reiserfs defaults 0 0
/dev/md1 /mnt/md1 reiserfs defaults 0 0

- reboot the machine

- when I type mount, the /dev/md0 is currently mounted but /dev/md1 was not mounted.
- An error message 'mount: special device /dev/md1 does not exist' during machine boot

Questions:

- anything wrong in my set up ?
- I create /dev/md1 with mknod and this md devices was disappear after reboot. Is there a way that I can fix it?
- I want to mirror all the partitions for SATA drive A after the /dev/md0 and /dev/md1 are created successfully.
If I want to mirror all the partition for disk A, do I just create raid devices for all the
individual partitions i.e /dev/sda1 to /dev/sda10 except extended partition /dev/sda2 and the swap /dev/sda6?

Thanks in advance

What does fstab look like and also what does cat /proc/mdstat say

Why do you keep posting this? What exactly is your question?

Hi IronWalker,

The ftsab is as follows:

/dev/sda5 / resiserfs notail 1 1
/dev/sda1 /boot resiserfs notail 1 2
/dev/sda9 /home resiserfs notail 1 2
/dev/hdd /mnt/cdrom auto umask=0,user,iocharset=iso8859-1,codepage=850,noauto,ro,exec,users 0 0
none /mnt/floppy supermount dev=/dev/fd0,fs=ext2:vfat,--,umask=0,iocharset=iso8859-1,sync,codepage=850 0 0
/dev/sdb1 /mnt/hd auto umask=0,user,iocharset=iso8859-1,sync,kudzu,codepage=850,noauto,exec,users 0 0
none /proc proc defaults 0 0
/dev/sda10 /tmp reiserfs notail 1 2
/dev/sda7 /usr reiserfs notail 1 2
/dev/sda8 /var reiserfs notail 1 2
/dev/sda6 swap swap defaults 0 0
/dev/sdb10 /mnt/hd2 auto umask=0,user,isocharset=iso8859-1,sync,kudzu,codepage=850,noauto,exec,usres 0 0
/dev/md0 /mnt/md0 reiserfs defaults 0 0
/dev/md1 /mnt/md1 reiserfs defaults 0 0

The results for cat /proc/mdstat is as follows:
Personalities : [rais1]
mod0 : active raid1 sdb1[1]
811136 blocks [2/1] [_U]

Hi bosewicht,

The first incomplete thread was submitted by mistake. Sorry for the multiple submission.
The question was stated in the second thread.

In case this is still open, all you need to do is set your partion types to FD (linux raid autodetect)

that way at boot, the /dev/md1 device will be picked up and mdadm will start the array as per /etc/mdadm.conf