Hi, I am trying to configure an array of 12 disks in a RAID 10 configuration. All 12 disks are identical 146Gb drives. First off, on each disk I created a single partition which spanned the whole disk with a system id of 0xFD. After writing the partition table, a print confirmed all looked good. Secondly, I used mdadm to create 6 RAID 1 pairs. (mirrored). mdadm --create /dev/md0 --level=1 -n 2 /dev/sda /dev/sdb mdadm --create /dev/md1 --level=1 -n 2 /dev/sdc /dev/sdd mdadm --create /dev/md2 --level=1 -n 2 /dev/sde /dev/sdf mdadm --create /dev/md3 --level=1 -n 2 /dev/sdg /dev/sdh mdadm --create /dev/md4 --level=1 -n 2 /dev/sdi /dev/sdj mdadm --create /dev/md5 --level=1 -n 2 /dev/sdk /dev/sdl cat /proc/mdstat showed the devices syncing. Once this had completed I created a final meta device which striped the RAID1 meta devices. e.g. mdadm --create /dev/md6 --level 0 -n 6 /dev/md0 dev/md1 dev/md2 dev/md3 dev/md4 dev/md5 I could then create a filesystem on the new array and mount it - all looked good. However, 2 things concerned me: 1. After creating the RAID array, the partition table for all the disks involved was empty and an fdisk returned: "Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)" What's going on here? 2. How can I get the array to come up after a reboot? What needs to be done? Do I need an rc script that runs mdadm? Thanks, Andy -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
