pylkko wrote:On btrfs you can however always, at any time, make a "dead" snapshot of a live system and while "remaining live", backup that dead snapshot somewhere else (using a million different ways, dd, btrfs send, tar, rsync, cp etc.). I have done it without issues. The snapshot is usable later, but there can some times be minor issues if, for example, you have other partitions that are not rolled back in sync. Many programs for example store configurations and other stuff in user's folders, if you roll back a root subvolume without rolling back a home that goes with it but is on separate subvolume or partition, you can end up with situations where you need to reset user profiles or other such things. But often even this does not happen. You may also need to adjust fstab so that the root partition is mounted correctly, or many services may fail on boot. But even if you forget to do this, you will be able to boot into single user mode and adjust
yeah, Ive already seen theses issues, they are not big thing, the system can fix them by itself with some little help. im uploading now the 5Gb fsarchiver backup to the cloud (Box), by using webdav and duplicity, It works great the combo duplicity+box (webdav), and box gives a very proffesional service offering 10GB for free. Box, prevent data losing or corruption in the cloud. I cant say the same about dropbox, when i tried to download some chunked big file, it was corrupted, or missed some chunk, and couldnt recover the upload; with box, Ive allways been able to restore my backup with Box, I also use duplicity and box to backup my home setting and main data folder, I use previouslly attic, and then i use duplicity to be able to upload the attic's repository with success. I hightly reccommend it to you for your knowledge.