Re: fstrim for ESP on SSDs

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On Sun, Nov 15, 2020 at 9:34 AM Jorge Fábregas <jorge.fabregas@xxxxxxxxx> wrote:
>
> Hi,
>
> I've been running with the fstrim.timer for years and recently noticed
> that my ESP partition always reports the same amount for trimmed blocks
> (512MB). It appears fstrim doesn't support FAT32 filesystems?

FAT supports discards since kernel ~4.19.

fstrim doesn't have file system specific support, it directly calls
FITRIM() ioctl and the kernel handles the file system specifics.

>Should I
> use the "discard" option in fstab for /boot/efi ?

> I know it's not a big issue since we seldom write the ESP after
> installation except for /boot/efi/EFI/fedora/grubenv after updates (or
> perhaps shim updates) but I'm wondering...

Yeah I don't think you need to consider it too much.


-- 
Chris Murphy
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