On Mon, Feb 25, 2019 at 11:23:12AM +0000, Tony Mountifield (tony@xxxxxxxxxxxxx) wrote:
> In article <20190225050144.GA5984@xxxxxxxxxxxxxxxxxxxxx>,
> Jobst Schmalenbach <jobst@xxxxxxxxxxxxxx> wrote:
> > Hi.
> > CENTOS 7.6.1810, fresh install - use this as a base to create/upgrade new/old machines.
> >
> > I was trying to setup two disks as a RAID1 array, using these lines
> >
> > mdadm --create --verbose /dev/md0 --level=0 --raid-devices=2 /dev/sdb1 /dev/sdc1
> > mdadm --create --verbose /dev/md1 --level=0 --raid-devices=2 /dev/sdb2 /dev/sdc2
> > mdadm --create --verbose /dev/md2 --level=0 --raid-devices=2 /dev/sdb3 /dev/sdc3
> >
> > then I did a lsblk and realized that I used --level=0 instead of --level=1 (spelling mistake)
>
> So I believe you need to do:
>
> mdadm --zero-superblock /dev/sdb1
> mdadm --zero-superblock /dev/sdb2
>
I actually deleted the partitions, at first using fdisk than parted (read a few ideas on the internet).
Also from the second try onwards I also changed the partition sizes, filesystems.
Also I tried with one disk missing (either sda or sdb).
Jobst
--
If proof denies faith, and uncertainty denies proof, then uncertainty is proof of God's existence.
| |0| | Jobst Schmalenbach, General Manager
| | |0| Barrett & Sales Essentials
|0|0|0| +61 3 9533 0000, POBox 277, Caulfield South, 3162, Australia
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