I started btrfs-convert for my ext4 partitioned hdd. I did a fsck first which was fine. So since it is running over 4 hours now (1.) I wonder if it will ever finish ? I read multiple articles (quickly) about the conversion but none stated a space requirement. But I guess there is some considering this article: https://oss.oracle.com/projects/btrfs/dist/documentation/btrfs-converter.html
So my HDD was using 99.0% of 1.82TB before I started. (2.) If it cannot finish is it save to cancel (CTRL+C) the prozess ?
iotop indicates still that btrfs-convert is reading with ~40MB/s from my hdd and top shows that one cpu core is fully loaded by btrfs-convert. (3.)What would be the wisest decision now?
Update: Meanwhile the conversion process has finished. It took almost 3 days. I must add that in between speeds dropped to ~0-10MB/s but 100% I/O load and CPU usage dropped accordingly down. This morning (after over 2 days running) the conversion process had only ~9h CPU time. All in all everything seems fine.