使用LVM快照为现有逻辑卷创建快照lvcreate -l 64 -s -n data-snapshot -p r /dev/vg0/data挂载快照mkdir -p /mnt/snapmount -o ro /dev/vg0/data-snapshot /mnt/snap恢复快照umount /dev/vg0/data-snapshotumount /dev/vg0/datalvconvert --merge /dev/vg0/data-snapshot删除快照umount /mnt/databackuplvremove /dev/vg0/databackup