[SOLVED] How to shrink BTRFS image

[IriDium]

I think what you are asking is to be able to restore a backed up image to a live system. A bit like changing an engine whilst driving down the motorway/freeway at 70mph.

I don't think it's possible as the OS is running and "knows" it mount points - a restore would destroy them and... more importantly destroy the program that is running the restore.

I guess it would be possible to "make" a 2nd copy of the OS and at the last minute, modify the boot options, but you might as well stuff your hand in a bee's nest and hope you don't get stung.

I'm not even aware of any commercial system that would allow such a thing.

[Sarcasm] It's an RPi take out the SD card - it's not that difficult, I've done it :-) [/Sarcasm]

So if I understand you, you wish to boot into a RAM OS, reload the image onto disk and reboot xbian as a restored image. I guess that should be possible as many OS allow "live" images but is it, at the end of the day, worth it.