[systemd-devel] journal fragmentation on Btrfs

[Chris Murphy]

On Mon, Apr 17, 2017 at 10:05 PM, Andrei Borzenkov <arvidjaar at gmail.com> wrote:

>> I have no idea if it's fsync or what. How can I tell?
>>
>
> strace -p $(pgrep systemd-journal)
>
> You will not see actual writes as file is memory mapped, but it
> definitely does not do any fsync() every so often.

Also found this.

https://lwn.net/Articles/306046/

Not sure how to enable and use it though.

-- 
Chris Murphy