3

Admittedly I'm not too familiar with MDADM. I recently set up an array for a NAS, but incorrectly sized the partitions in my setup script, and need to remove the array, re-partition the disks, and re-create the array.

In my Googling, I found the following process to delete an mdadm array:

# mdadm --stop /dev/md0
# mdadm --remove /dev/md0
# mdadm --zero-superblock ( /dev/sda /dev/sdb ... )

However, I get the following output:

sudo mdadm --stop /dev/md0
mdadm: stopped /dev/md0

sudo mdadm --remove /dev/md0
mdadm: error opening /dev/md0: No such file or directory

Then, if I attempt to format the drives, parted returns an error and the array re-appears in /proc/mdstat.

I've tried just running mdadm --remove /dev/md0 to no avail as well.

Any help with the issue would be appreciated.

3

After some more digging, I found the combination of commands that fixed the issue:

sudo mdadm --stop /dev/md0
sudo mdadm --zero-superblock /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.