Chapter 8: Storage Master

Chapter 8: Storage and Disk

Disk Info

lsblk
fdisk -l
df -h
du -sh /var/*

Partition and Format

sudo fdisk /dev/sdb
sudo mkfs.ext4 /dev/sdb1
blkid /dev/sdb1

Mounting

sudo mount /dev/sdb1 /mnt/data
sudo umount /mnt/data
# /etc/fstab: UUID=xxx /mnt ext4 defaults 0 2
sudo mount -a

LVM

pvcreate /dev/sdb
vgcreate vg0 /dev/sdb
lvcreate -L 10G -n lv0 vg0
lvextend -L +5G /dev/vg0/lv0
resize2fs /dev/vg0/lv0

Notes

  • ext4=common, xfs=RHEL default
  • LVM: PV-VG-LV order
  • UUID preferred in fstab