LVM Snapshot

Install

• apt-get install lvm2
• reboot

Create LVM System

• pvcreate /dev/sdc
• vgcreate data /dev/sdc
• lvcreate -L 4G -n vms data

Format and mount

• mkfs.ext4 /dev/data/vms
• mkdir /mnt/vms
• mount /dev/data/vms /mnt/vms/

LVM Snapshot erstellen

• lvcreate -s -L 2G --name vms-snap /dev/data/vms
• mkdir /mnt/snapshot
• mount /dev/data/vms-snap /mnt/snapshot/
• mkdir -p /backup/vms-$(date +%Y-%m-%d-%H-%M)
• cp -va /mnt/snapshot/* /backup/backup/$(date +%Y-%m-%d-%H-%M)

• umount /mnt/snapshot
• lvremove /dev/data/vms-snap

Links

• https://www.thomas-krenn.com/de/wiki/LVM_Snapshot_Merge