RAID Cheatsheet.md

Command Cheatsheet

RAID

• How do I know if an instance EBS volumes are RAID'd or not/ lvm or not?

lsblk

• Get RAID details

  sudo cat /proc/mdstat

  sudo mdadm --detail /dev/md0

  Create RAID

  sudo mdadm --create --verbose /dev/md0 --level=10 --raid-devices=2 /dev/nvme2n1 /dev/nvme3n1

  blkid

  sudo cat /proc/mdstat

  sudo mdadm --create --verbose /dev/md1 --level=0 --raid-devices=2 /dev/xvdg /dev/xvdh

  sudo cat /proc/mdstat

  sudo mkfs.ext4 -F /dev/md1

  lsblk -o NAME,SIZE,FSTYPE,TYPE,MOUNTPOINT

  sudo mkdir -p /data1

  sudo df -h -x devtmpfs -x tmpfs

  sudo mdadm --detail --scan | sudo tee -a /etc/mdadm/mdadm.conf

  sudo update-initramfs -u

  echo '/dev/md1 /data1 ext4 defaults,nofail,discard 0 0' | sudo tee -a /etc/fstab