Hi
As far as I know, the raidtools (or do you mean mdutils) 0.50 work like
the old
mdutils 0.41.
As I said, I am not sure, but with the command mkraid raid1 /dev/md0
/dev/sda1 /dev/sdb1...
you will get (so it works under mdutils 0.41) an automatically created
mdtab in /etc.
Also you can try mkraid -ar but you have to start the raids before with
mdadd -ar and
mdrun -ar.
Greetings, Dietmar
Paul B. Brown wrote:
>
> Hello all,
>
> Sorry for such a simple request but I can't seem to get mkraid to work.
> I want to mirror (RAID-1) two 4.2 GB SCSI drives (/dev/sda, /dev/sdb).
>
> Distribution: Redhat 5.2 (Linux 2.0.36)
> Software....: RAIDTools 0.50 BETA 10
>
> The Multiple Devices Driver Support is enabled in the kernel with all
> sub-options enabled as well (linear, RAID-0, RAID-1, RAID-4, and RAID-5).
>
> The two SCSI disks are laid out identically:
>
> Disk /dev/sda: 132 heads, 62 sectors, 1017 cylinders
> Units = cylinders of 8184 * 512 bytes
>
> Device Boot Start End Blocks Id System
> /dev/sda1 1 26 106361 83 Linux native # /
> /dev/sda2 27 59 135036 82 Linux swap # swap
> /dev/sda3 60 1017 3920136 5 Extended
> /dev/sda5 60 92 135005 83 Linux native # /tmp
> /dev/sda6 93 143 208661 83 Linux native # /var
> /dev/sda7 144 331 769265 83 Linux native # /usr
> /dev/sda8 332 582 1027061 83 Linux native # /opt
> /dev/sda9 583 1017 1779989 83 Linux native # /home
>
> Disk /dev/sdb: 132 heads, 62 sectors, 1017 cylinders
> Units = cylinders of 8184 * 512 bytes
>
> Device Boot Start End Blocks Id System
> /dev/sdb1 1 26 106361 83 Linux native # /
> /dev/sdb2 27 59 135036 82 Linux swap # swap
> /dev/sdb3 60 1017 3920136 5 Extended
> /dev/sdb5 60 92 135005 83 Linux native # /tmp
> /dev/sdb6 93 143 208661 83 Linux native # /var
> /dev/sdb7 144 331 769265 83 Linux native # /usr
> /dev/sdb8 332 582 1027061 83 Linux native # /opt
> /dev/sdb9 583 1017 1779989 83 Linux native # /home
>
> I want to mirror the following way:
>
> /dev/sda1 => /dev/sdb1
> /dev/sda5 => /dev/sdb5
> /dev/sda6 => /dev/sdb6
> /dev/sda7 => /dev/sdb7
> /dev/sda8 => /dev/sdb8
> /dev/sda9 => /dev/sdb9
>
> This assumes that /dev/sda2 (swap) and /dev/sda3 (extended partition) do
> not need to be mirrored.
>
> Here is the /etc/raidtab I have setup:
>
> -------------------------------- /etc/raidtab -----------------------------
> # raid-1 configuration for /
> raiddev /dev/md1
> raid-level 1
> nr-raid-disks 2
> nr-spare-disks 0
>
> device /dev/sda1
> raid-disk 0
>
> device /dev/sdb1
> raid-disk 1
>
> # raid-1 configuration for /tmp
> raiddev /dev/md5
> raid-level 1
> nr-raid-disks 2
> nr-spare-disks 0
>
> device /dev/sda5
> raid-disk 0
>
> device /dev/sdb5
> raid-disk 1
>
> # raid-1 configuration for /var
> raiddev /dev/md6
> raid-level 1
> nr-raid-disks 2
> nr-spare-disks 0
>
> device /dev/sda6
> raid-disk 0
>
> device /dev/sdb6
> raid-disk 1
>
> # raid-1 configuration for /usr
> raiddev /dev/md7
> raid-level 1
> nr-raid-disks 2
> nr-spare-disks 0
>
> device /dev/sda7
> raid-disk 0
>
> device /dev/sdb7
> raid-disk 1
>
> # raid-1 configuration for /opt
> raiddev /dev/md8
> raid-level 1
> nr-raid-disks 2
> nr-spare-disks 0
>
> device /dev/sda8
> raid-disk 0
>
> device /dev/sdb8
> raid-disk 1
>
> # raid-1 configuration for /home
> raiddev /dev/md9
> raid-level 1
> nr-raid-disks 2
> nr-spare-disks 0
>
> device /dev/sda9
> raid-disk 0
>
> device /dev/sdb9
> raid-disk 1
>
> ---------------------------------------------------------------------------
>
> This is the /etc/mdtab file:
>
> ---------------------------------------------------------------------------
> /dev/md1 RAID1 /dev/sda1 /dev/sdb1 # /
> /dev/md5 RAID1 /dev/sda5 /dev/sdb5 # /tmp
> /dev/md6 RAID1 /dev/sda6 /dev/sdb6 # /var
> /dev/md7 RAID1 /dev/sda7 /dev/sdb7 # /usr
> /dev/md8 RAID1 /dev/sda8 /dev/sdb8 # /opt
> /dev/md9 RAID1 /dev/sda9 /dev/sdb9 # /home
> ---------------------------------------------------------------------------
>
> We used the following command unsuccessfully:
>
> mkraid /etc/raidtab
> mkraid -c /etc/raidtab
> mkraid
> mkraid -f
>
> The response we get from each of these commands is:
>
> Nothing to do.
>
> We have also read through the available documentation (FAQ, HOWTO, manpage,
> README, etc) to no avail. Can someone give us some advice?
>
> Thanks gang,
>
> Paul B. Brown
> Principle Operations Support Engi-weenie
> PSINet, Inc.
> [EMAIL PROTECTED]
> 703/375-1894
--
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