1.4 KiB
1.4 KiB
Example
UGREEN
- Port: USB 3.0 2.5-Inch SATA
- Mode/PID: CM237
- Main Controller: ASM1153E
- Support: UASP Transfer Protocol
OPEN Trim for external usb ssd
sudo fstrim -v /
fstrim: /run/media/telgar/ssd: the discard operation is not supported
$ lsblk --discard /dev/sda
NAME DISC-ALN DISC-GRAN DISC-MAX DISC-ZERO
sdb 0 0B 0B 0
├─sdba 0 0B 0B 0
└─sdba 0 0B 0B 0
If the DISC-MAX value is 0B, then TRIM is not enabled.
Find the USB idVendor and idProduct :
$ lsusb
...
Bus 002 Device 002: ID 174c:1153 ASMedia Technology Inc. ASM1153 SATA 3Gb/s bridge
...
Add /etc/udev/rules.d/50-usb-ssd-trim.rules
ACTION=="add|change", ATTRS{idVendor}=="174c", ATTRS{idProduct}=="1153", SUBSYSTEM=="scsi_disk", ATTR{provisioning_mode}="unmap"
Then reboot, the TRIM will be enabled.
1st time, run "fstrim -v /" successfull:
$ sudo fstrim -v /
/: 111.4 GiB (119574462464 bytes) trimmed
Automatic trimming
The last thing you will need to do to make sure the TRIM command is run automatically in the background
(so you don't need to run fstrim manually) is to enable the built-in fstrim.timer.
To do that, run the command:
$ sudo systemctl enable fstrim.timer
By default, it will run weekly.
All done.