When a disk (out of 8 disk Raid 10 array) was physically removed, Ubuntu 16.04 recognized the the remaining disk as Raid 0.
Why is that? Restarting the machine doesn't help. It still recognizes it as Raid 0.
Where is the configuration to tell mdadm that the array is a raid 10 instead of 0?
/etc/mdadm/mdadm.conf
- FYI Declare a faulty diskmdadm --manage /dev/mdX --set-faulty /dev/sdbX
- Before removing a diskmdadm --manage /dev/mdX --remove /dev/sdbX
- After adding a disk (replacement)mdadm --manage /dev/mdX --add /dev/sdbX
--remove
before a manual remove with no replacement, mdadm cannot always guess how to assemble the remaining devices