set up TRIM

[TomXtal]

I’m setting up a new install of Debian 12.5 btrfs on a new SSD, question do I need to set up TRIM on my newly installed SDD I will also be setting it up with snapper.

In the fstab should I use the line below.

Code: Select all

btrfs   rw,noatime,space_cache=v2,compress=zstd,ssd,discard=async,subvol=@ 0       0
btrfs   rw,noatime,space_cache=v2,compress=zstd,ssd,discard=async,subvol=@home	0       0

I see on some forums the info below.

Code: Select all

UUID=??????  /              btrfs   defaults        0 0
UUID=??????  /home     btrfs   subvol=home,compress=zstd:1 0 0
UUID=?????? /.snapshots            btrfs subvol=.snapshots,compress=zstd:1 0 0 
UUID=?????? /home/.snapshots  btrfs subvol=home/.snapshots,compress=zstd:1 0 0

Which method is the best one to use.

TomX

[kc1di]

Trim on most machines is setup automatically to run weekly. You can check with this command in a terminal.
systemctl cat fstrim.timer
You should see an output similar to this.

Code: Select all

[Unit]
Description=Discard unused blocks once a week
Documentation=man:fstrim
ConditionVirtualization=!container
ConditionPathExists=!/etc/initrd-release

[Timer]
OnCalendar=weekly
AccuracySec=1h
Persistent=true
RandomizedDelaySec=6000

[Install]
WantedBy=timers.target

It can be changed to run daily if you choose.

[TomXtal]

Hi kc1di
Thanks for the help.

TomX

[kc1di]

Your welcome, enjoy!

[Aki]

Hello,

I hope you sorted it out. :)

If yes, please, mark the discussion as "solved" manually adding the text tag "[Solved]" at the beginning of the subject of the first message (after other tags, if any). It is also an opportunity to the make the subject more understandable to other forum users and readers, if necessary; i.e. :

[Solved] How to set up the SSD disk TRIM

Please, use code tags to include commands, their logs and configuration files in the body of a message. I made it for you in previous posts.

Thanks.