I have installed a new Debian 10 on /dev/sda with LUKS + LVM. It has the following partition structure:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 79G 0 disk
├─sda1 8:1 0 953M 0 part /boot
├─sda2 8:2 0 1K 0 part
└─sda5 8:5 0 78.1G 0 part
└─sda5_crypt 254:0 0 78.1G 0 crypt
├─box1-root 254:1 0 14G 0 lvm /
├─box1-tmp 254:2 0 1.9G 0 lvm /tmp
├─box1-swap 254:3 0 3.7G 0 lvm [SWAP]
└─box1-home 254:4 0 58.5G 0 lvm /home
The total disk is 80GB and there are much more disk space left. If I use dd command like this:
dd if=/dev/sda of=/mnt/Backup_Volume/backup.img
It would take the entire disk space (80GB) to store the backup.img. I want to shrink this .img file and make the size of .img file as smallest as possible (excluding the free space)
Another information:
Filesystem 1K-blocks Used Available Use% Mounted on
udev 2004244 0 2004244 0% /dev
tmpfs 404148 15708 388440 4% /run
/dev/mapper/box1-root 14351816 8721012 4882056 65% /
tmpfs 2020732 68 2020664 1% /dev/shm
tmpfs 5120 4 5116 1% /run/lock
tmpfs 2020732 0 2020732 0% /sys/fs/cgroup
/dev/mapper/box1-home 60112780 57616 56971900 1% /home
/dev/mapper/box1-tmp 1886280 6012 1766400 1% /tmp
/dev/sda1 944120 51092 827852 6% /boot
tmpfs 404144 0 404144 0% /run/user/1000
I saw similar post for this but it doesn't cover the LUKS and LVM partition here:
https://superuser.com/questions/610819/how-to-resize-img-file-created-with-dd
My objective is to have a smaller img file as a backup so I can restore this later. And (maybe, I'm not sure) if I would need to resize the partition later to fit the 80G, I'm ok with it. Do you think this is possible ?
0 Answers