Hey all, I've got a Linux box set up with two RAID-1 partitions and a Linear RAID partition for storage. If one of the drives fails its pretty simple to repair RAID-1 and reassemble. However for Linear is it possible to just kill the linear RAID array .. reformat the two partitions that used to make it up and recreate the array? I've tried to unmount the device and do all of this but it comes up as busy. Can anyone help? -Anon
More information More info. I'm running on RHEL4. I was really just asking if anyone else had done this and what steps they did. Kernel is 2.6.22. Here is what I tried to do: bash# mdadm --manage /dev/md1 -f /dev/sda2 mdadm: set /dev/sda2 faulty in /dev/md1 bash# mdadm --manage /dev/md1 -f /dev/sdb2 mdadm: set /dev/sdb2 faulty in /dev/md1 bash# cat /proc/mdstat Personalities : [linear] [raid1] md1 : active linear sdb2[1] sda2[0] 957216768 blocks 64k rounding md0 : active raid1 sdb1[1] 9775424 blocks [2/1] [_U] unused devices: <none> bash# mdadm --manage /dev/md1 -r /dev/sdb2 mdadm: hot remove failed for /dev/sdb2: Device or resource busy bash# mdadm --manage /dev/md1 -r /dev/sda2 mdadm: hot remove failed for /dev/sda2: Device or resource busy bash# mdadm --manage /dev/md1 -fr /dev/sda2 mdadm: hot remove failed for /dev/sda2: Device or resource busy bash# mdadm --manage --stop /dev/md1 mdadm: fail to stop array /dev/md1: Device or resource busy bash# fuser -m /dev/md1 bash# fuser -m /dev/sda2 bash# fuser -m /dev/sdb2 bash# mdadm --manage --stop /dev/md1 mdadm: fail to stop array /dev/md1: Device or resource busy bash-2.05b# lsof | grep md1 bash-2.05b# If anyone has successfully restored a linear RAID(i.e. formatted both normal devices and created the array). Please help . -Anon
Take a look here: http://www.howtoforge.com/how-to-se...ystem-incl-grub-configuration-debian-lenny-p4
I'm NOT having problems with RAID-1 arrays. Like I said up top.. I want to take a failed LINEAR RAID array. Stop it. Format the two partitions that make it up. And then recreate the LINEAR RAID array. But I am unable to do this and I'm wondering if it is possible.
Hi Anon, If you need any further help, the company RAID-Recovery-Online.com can achieve RAID 1 recovery remotely. Goodluck.
