Bug#869897: [debian-installer] Please add support for the TRIM command for SSDs
Package: debian-installer
Followup-For: Bug #869897
The dmcrypt / LUKS doesn't enable discard by default on purpose, as it might
potentially be a security issue. I don't think personally it is actual
security problem, but it is just my personal opinion. You would need to
convince dmcrypt / luks maintainer to change the default probably.
BTW. As of the moment kernel and ext4 and LVM doesn't detect automatically
if the device is discard (TRIM) capable, and doesn't use it by default,
which is rather missfortunate.
So, yeah, I think it does belong to installer, especially when doing
automated partitioning for the user.
However, I think it is worth doing some stress tests and benchmarks
on real hardware before actually implementing it. Anecdotal evidence
and "recommendations", just in case are very weak argument.
Also, there is a Debian Wiki article on this: https://wiki.debian.org/SSDOptimization
Another way to quickly see TRIm supporting devices is `lsblk --discard`
take a look at 3rd column (discard granularity), if it is more than 0,
it supports discard / TRIM.
Cheers,
Witold
-- System Information:
Debian Release: bullseye/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 5.4.0-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
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