Prevent automatic reconstruction during boot/assembly (RAID 1)?

Prevent automatic reconstruction during boot/assembly (RAID 1)?

[Sebastian Färber]

Hi,

i'm trying to figure out if it is possible to prevent the
automatic reconstruction that can occur during the md assembly
at boot.
I'm running Kernel 2.6.30.4 and use a RAID-1 over two SATA disks.
If the server is rebooted "hard" due to power loss etc. it often happens
that the reconstruction of my RAID-1 is automatically triggered by the kernel.
Is there any way to prevent this? I want to re-add the "out of sync"
drive myself
using mdadm only.
I'm currently using raid auto detection (partiton type fd) and the old
0.90 superblock format but if it helps i would switch
to an initrd/newer superblock.

Thanks for your help!

Regards,

Sebastian

Re: Prevent automatic reconstruction during boot/assembly (RAID 1)?

[Neil Brown]

On Tuesday August 11, faerber@gmail.com wrote:
> Hi,
> 
> i'm trying to figure out if it is possible to prevent the
> automatic reconstruction that can occur during the md assembly
> at boot.
> I'm running Kernel 2.6.30.4 and use a RAID-1 over two SATA disks.
> If the server is rebooted "hard" due to power loss etc. it often happens
> that the reconstruction of my RAID-1 is automatically triggered by the kernel.
> Is there any way to prevent this? I want to re-add the "out of sync"
> drive myself
> using mdadm only.
> I'm currently using raid auto detection (partiton type fd) and the old
> 0.90 superblock format but if it helps i would switch
> to an initrd/newer superblock.

There isn't any simple way to do what you want.
May if you could explain why you want it, something else might be
suitable.

NeilBrown