On 2005-05-10T15:40:03, SainTiss <saintiss@xxxxxxx> wrote:
> Hi,
>
> how does mdadm determine which device to synchronize to which?
>
> For example, I have two partitions A and B which I would like to be setup as a RAID-1 array.
>
> suppose A contains the data I want to have, and B contains rubbish. Obviously, I want B to be synched to A, and not the other way round.
>
> Suppose I do this:
>
> mdadm --create /dev/md0 --level=1 --raid-devices=2 A B
Create a degraded array with one missing disk with the good data; and
then add the one which you want to be overwritten.
> Or what would happen with the following?
> mdadm --create /dev/md0 --level=1 --raid-devices=2 missing B
> mdadm -a /dev/md0 A
>
> will A then sync to B because it was added last, or B to A because A fills the "missing" spot, which was specified before B?
B to A.
Sincerely,
Lars Marowsky-Brée <lmb@xxxxxxx>
--
High Availability & Clustering
SUSE Labs, Research and Development
SUSE LINUX Products GmbH - A Novell Business -- Charles Darwin
"Ignorance more frequently begets confidence than does knowledge"
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