I recently decided to replace the SD card in my Raspberry Pi and reinstall the system. Without any special backups in place, I turned to rsync to duplicate /var/lib/docker
with all my containers, including Nextcloud.
Step #1: I mounted an external hard drive to /mnt/temp
.
Step #2: I used rsync to copy the data to /mnt/tmp
. See the difference?
Step #3: I reformatted the SD card.
Step #4: I realized my mistake.
Moral: no one is immune to their own stupidity 😂
No luck with extundelete (segfault) and testdisk (sees some deleted files, but not
/var/lib/docker
). At least I can always throws it away and not worry about safety of my data! :)You can always try professional data recovery services. It just depends on how much the data is worth to you.