Re: disk order problem in a raid 10 array

[NeilBrown <neilb@suse.de>]

On Fri, 18 Mar 2011 15:49:20 +0100 Xavier Brochard <xavier@alternatif.org>
wrote:

> Hello
> 
> trying to solve my problem with a unusable raid10 array, I discovered that 
> disk order is mixed between each boot - even with live-cd.
> Here's an extract from dmesg:
> [   12.5]  sda:
> [   12.5]  sdc:
> [   12.5]  sdd:
> [   12.5]  sde: sdd1
> [   12.5]  sdf: sdc1
> [   12.5]  sda1 sda2
> [   12.5]  sdg: sde1
> [   12.5]  sdf1
> 
> is that normal?
> could this be a sign of hardware controler problem?
> could this happen because all disks are sata-3 except 1 SSD which is sata-2?

You are saying that something changes between each boot, but only giving one
example so that we cannot see the change.  That is not particularly helpful.

The output above is a bit odd, but I think it is simply that the devices are
all being examined in parallel so the per-device messages are being mingled
together.
Certainly 'sdd1' is on 'sdd', not no 'sde' as the message seems to show.

NeilBrown