Re: weekly fstrim (still) necessary?

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On 22 Jun 2020, at 10:23, David Sterba wrote:

On Mon, Jun 22, 2020 at 04:02:34PM +0200, Ulli Horlacher wrote:
On Sun 2020-06-21 (18:57), Chris Murphy wrote:

You need to check fstrim.timer, which in turn triggers fstrim.service.

root@fex:~# cat /lib/systemd/system/fstrim.timer

root@fex:~# cat /lib/systemd/system/fstrim.service

I'm familiar with the contents of the files. Do you have a question?


You have deleted my question, it have asked:

This means: an extra fstrim (via btrfsmaintenance script, etc) is
unnecessary?

You need only one service, either from the fstrim or from
btrfsmaintenance.

Dennis’s async discard features are working much better here than either periodic trims or the traditional mount -o discard. I’d suggest moving to mount -o discard=async instead.

-chris



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