[PROBLEM] How to recover Xbian BTRFS snapshot or a dir. from xbian_backup_home_01-01-23.img.gz?

[postcd]

Mount snapshots subvolume for current session in order to browse directories and files/copy/restore it:

Quote:mkdir /root/btrfs-snapshots;mount -o rw,relatime,ssd,space_cache,subvol=/ /dev/mmcblk0p2 /root/btrfs-snapshots

(/dev/mmcblk0p2 is the device path shown in output of the command: mount|grep "@" )

List content of the /home/user/ directory in one of the snapshots:

Quote:ls /root/btrfs-snapshots/home/@btrfs-auto-snap_daily-2023-04-24-0827/user/

Copy directory from snapshot to its original location:

Quote:cp -a --reflink=always /root/btrfs-snapshots/home/@btrfs-auto-snap_daily-2023-04-24-0827/user/directory /home/user/

(--reflink=always to prevent duplication of files (save disk space))

List snapshots:

Quote:btrfs sub list / -t

Mount snapshots on each boot:

Quote:blkid|grep btrfs

Find out UUID and copy it down, open fstab:

Quote:sudo nano /etc/fstab

append new line inside it:

Quote:UUID="uuidhere" /root/btrfs-snapshots xbian ro,noatime,nodiratime 0 0

(replace uuidhere and xbian[by string that other mount lines in the file has] and replace ro by rw in case you need to write into snapshot filesystem. "ssd" parameter in case of a SSD drive + writing.)