On 07 May 2003, Craig wrote: > We have a server running raid 1 mirroring and one of the HDD > failed. We have since replaced the failed drive and have > re-constructed 2 out of the 3 raid arrays. The problem we are > having is with re-contructing the raid array runnning on the root > partition.
I had exactly the same problem this morning. Our server allows hot swapping drives so I was able to replace the failed drive without taking the machine down. I did the following steps: - remove all partitions on the failed disk from the raid: mdadm --remove /dev/md0 /dev/sdb1 ... - remove the disk from the scsi bus: scsiadd -r 1 - replace the disk and add it to the scsi bus: scsiadd -a 1 - partition the disk (copy partition table from sda to sdb): sfdisk -d /dev/sda | sfdisk /dev/sdb - add all partitions to the raid: mdadm --add /dev/md0 /dev/sdb1 ... - install lilo on /dev/sdb: lilo - now watch the mirror rebuilding in /proc/mdstat Hope this helps. One of the partitions is the root partition, but this is not important. The same procedure was applied as to all the other partitions. Regards, Oliver
