This is true, although since kernel 5.2, and continuing to be enhanced, is the tree checker. There's read time and write time tree checking that can catch speci

This is true, although since kernel 5.2, and continuing to be enhanced, is the tree checker. There's read time and write time tree checking that can catch specific errors in the file system and prevent further confusion. This usually means it goes read-only. In the most typical case where you have a crash or power failure, you just reboot normally. No file system check happens nor is it needed. It just continues from the most recent successfully committed transaction. Since it's copy-on-write, there's no inconsistency in the file system, even if the most recent changes might be lost.