I have two Server Pure and they each appeared to fail the OTA update and I successfully restored my first test system using USB restore. I did a USB restore on the second system and it worked all day to restore while preserving data by converting the fs to btfrs. I came back to my web console(start.local/loading) of the restore process and it filled the browser with these errors:
ERROR: defrag failed on /media/startos/data/package-data.convert-tmp/volumes/… : No space left on device
At the start of the update this NVMe had ~180GB of 2TB free. Is it possible to chroot and remove all the bitcoin blockchain data and finish the restore cleanup?