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Thanks for mentioning those options. I found a little more about the in the ext4 manpage. Things about it a little more, I'd expect I could skip the first dire

Thanks for mentioning those options. I found a little more about the in the ext4 manpage. Things about it a little more, I'd expect I could skip the first directory fsync I'd mentioned. Surely the rename can't make it to the directory without the creation getting there, too... Anyway, I feel like I've could come up with a list of questions 10x as long as the one I just gave, but you'd never really get answers, even for a particular drive, os, fs combo, without expensive testing or source code digging.

the8472 8y ago
Yes, it's an area of research, https://www.usenix.org/system/files/conference/osdi14/osdi14-paper-pillai.pdf https://www.usenix.org/system/files/conference/osdi14/osdi14... But in the end you should code against what posix guarantees, not what particular filesystems happen to do, because the next filesystem might use some other leeway the spec provides.