The scrub is neither cancelable not stoppable. What is the problem?
[root@host ]# btrfs scrub status ./ scrub status for XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXX scrub started at Thu Feb 19 12:41:22 2015, running for 16964 seconds total bytes scrubbed: 1.56TiB with 0 errors [root@host ]# btrfs scrub cancel ./ ERROR: scrub cancel failed on ./: not running [root@host ]# btrfs scrub start ./ ERROR: scrub is already running. To cancel use 'btrfs scrub cancel ./'. To see the status use 'btrfs scrub status [-d] ./'. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html