Espandere un array Raid in Linux

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sudo fdisk -l /dev/sda
sudo cfdisk /dev/sda

sudo mdadm --fail /dev/md0 /dev/sdb1
sudo mdadm --remove /dev/md0 /dev/sdb1
cat /proc/mdstat
sudo mdadm --fail /dev/md1 /dev/sdb2
sudo mdadm --remove /dev/md1 /dev/sdb2
cat /proc/mdstat

sudo fdisk /dev/sdb
sudo cfdisk /dev/sdb
sudo fdisk -l /dev/sdb
sudo mdadm --add /dev/md0 /dev/sb1
sudo mdadm --add /dev/md0 /dev/sdb1
sudo mdadm --add /dev/md1 /dev/sdb2

watch cat /proc/mdstat

sudo mdadm --fail /dev/md0 /dev/sda1
sudo mdadm --fail /dev/md0 /dev/sda1
sudo mdadm --remove /dev/md0 /dev/sda1
sudo mdadm --remove /dev/md1 /dev/sda2
cat /proc/mdstat

sudo sfdisk -d /dev/sdb | sudo sfdisk /dev/sda
sudo mdadm --add /dev/md1 /dev/sda2
sudo mdadm --add /dev/md0 /dev/sda1
cat /proc/mdstat


sudo mdadm --grow /dev/md0 --size=max
watch cat /proc/mdstat

sudo mdadm --grow /dev/md1 --size=max
watch cat /proc/mdstat

sudo pvdisplay /dev/md1

sudo pvresize /dev/md1
sudo pvdisplay /dev/md1

sudo lvextend /dev/mapper/lvgdata-lvdata01 /dev/md2
sudo ex2resize -p /dev/mapper/lvgdata-lvdata01

Riferimenti

• growing ext3 partition on RAID1 without rebooting