[prev in list] [next in list] [prev in thread] [next in thread] 

List:       fedora-devel-list
Subject:    Re: Fedora 32 System-Wide Change proposal: Enable fstrim.timer by default
From:       Louis Lagendijk <louis () fazant ! net>
Date:       2019-12-20 17:11:26
Message-ID: 6a8ac4aaa97ff91b8fe6cb80198d6dc834afffe7.camel () fazant ! net
[Download RAW message or body]

On Fri, 2019-12-20 at 17:46 +0100, Lennart Poettering wrote:
> 
> Or let me ask this differently: the "discard" mount option of various
> kernel file systems, what does it differently than what this new
> fedora feature is supposed to do?
> 
fstrim does the discard once a week (or whenever it it triggered),
discard as a mount option does trigger discard when a block is freed.
Depending on the drive it may actually slow down IO as the SSD will
need more time to finish the IO. Doing an fstrim leaves the processing
to the SDD. That was the argument years ago. I don't know if this is
still true for modern SSD's. For older SSDs fstrim would stil be the
safer option. And automatic trimming is long overdue in my opinion.

Louis
_______________________________________________
devel mailing list -- devel@lists.fedoraproject.org
To unsubscribe send an email to devel-leave@lists.fedoraproject.org
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org

[prev in list] [next in list] [prev in thread] [next in thread]