mdX and sdXX are used to save you from copy-paste troubles

To stop recovery mark drive as "fault"
```shell
mdadm /dev/mdX -f /dev/sdXX
```
Speed-up recovery
```shell
sudo echo 100000 > /proc/sys/dev/raid/speed_limit_min
sudo echo 400000 > /proc/sys/dev/raid/speed_limit_max
mdadm --grow --bitmap=internal /dev/mdX
```
Re-add drive
```shell
mdadm /dev/mdX -r /dev/sdXX
mdadm /dev/mdX -a /dev/sdXX
```
Watch your recovery
```shell
watch /cat/prod/mdstat
```
Once array rebuild or fully synced, disable bitmaps
```shell
mdadm --grow --bitmap=none /dev/mdX
```