From: Frank Steinmetzger <Warp_7@gmx.de>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] What are common SSDs does and don'ts.
Date: Sun, 23 Mar 2025 23:32:57 +0100 [thread overview]
Message-ID: <Z-CMGZsbo7gjgdnA@q> (raw)
In-Reply-To: <0366e58b-826c-3ec4-bc94-20a992d21dd0@gmail.com>
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Am Sun, Mar 23, 2025 at 04:41:58PM -0500 schrieb Dale:
> Michael wrote:
> > On Sunday, 23 March 2025 01:48:01 Greenwich Mean Time Dale wrote:
> >> Michael wrote:
> >>> Finally, consider TRIM being run on a cron job, or better use something
> >>> like the SSDcronTRIM script once a month to decide and execute fstrim if
> >>> needed.
> > [snip ...]
> >
> >> The only thing on SSD is the OS itself. I have partitions for /efi,
> >> /boot with ext2, / and /var with ext4. I'll set up fstrim later on.
> >> Given I have a 1TB stick and left well over 100GBs unused, I should have
> >> room left over to last a while. On my todo list tho. Would once a
> >> month be often enough tho? I update each weekend. Other than that, not
> >> much changes really. /home and such is on spinning rust still. If I
> >> did daily updates, might be a better plan. Once a week, maybe monthly
> >> will be OK.
> > Even once every 3-6 months would be more than enough. The SSDcronTRIM will
> > check if your disk is filling up and will only run fstrim when/if it is
> > needed.
> >
> > https://chmatse.github.io/SSDcronTRIM/
>
>
> That's not in the Gentoo tree. Hmmmmm.
For systemd, fstrim ships with a unit file to run it once a week. You could
easily create something for cron. When my NAS is up again (my last remaining
Gentoo system) I could look at how I did it.
> I ran fstrim on my root and var partitions and got this.
>
>
> root@Gentoo-1 / # fstrim -v /
> /: 13.7 GiB (14676369408 bytes) trimmed
> root@Gentoo-1 / # fstrim -v /var
> /var: 43.9 GiB (47162359808 bytes) trimmed
> root@Gentoo-1 / #
>
>
> It looks like /var changes more than root does.
The size in the output is usually simply the entire free space. AFAIK fstrim
does not remember what it trimmed at the previous run.
> I kinda wish I just
> could run it on the whole m.2 stick and it do its thing regardless of
> mount point. From the looks of the man page tho, that isn't a option.
fstrim -a runs on all file systems. If there is unassigned (unpartitioned)
space on your SSD, then that space is not written to anyways, thus there is
no need for trimming that.
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next prev parent reply other threads:[~2025-03-23 22:34 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-22 18:50 [gentoo-user] What are common SSDs does and don'ts Dale
2025-03-22 19:29 ` Mark Knecht
2025-03-22 21:37 ` Michael
2025-03-23 1:48 ` Dale
2025-03-23 9:00 ` Michael
2025-03-23 21:41 ` Dale
2025-03-23 22:15 ` Nate Eldredge
2025-03-23 22:32 ` Frank Steinmetzger [this message]
2025-03-23 23:24 ` Dale
2025-03-31 21:27 ` Frank Steinmetzger
2025-04-01 0:44 ` Dale
2025-04-01 10:01 ` Peter Humphrey
2025-04-01 10:12 ` Dale
2025-04-01 10:24 ` Peter Humphrey
2025-04-01 12:56 ` Dale
2025-04-01 13:13 ` Peter Humphrey
2025-04-02 3:33 ` Dale
2025-04-02 11:13 ` Peter Humphrey
2025-04-01 11:04 ` Michael
2025-04-01 13:03 ` Dale
2025-04-01 15:44 ` Michael
2025-04-02 4:04 ` Dale
2025-04-02 8:29 ` Michael
2025-04-07 18:28 ` Dale
2025-04-01 22:46 ` Frank Steinmetzger
2025-04-01 23:08 ` Frank Steinmetzger
2025-04-02 4:03 ` Dale
2025-03-23 4:34 ` Matt Jolly
2025-03-23 6:56 ` netfab
2025-03-23 7:01 ` Dale
2025-03-23 7:03 ` netfab
2025-03-23 22:46 ` Frank Steinmetzger
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