[snippet] HowTo – activate trim on a dm-crypt encrypted lvm

Just a short snippet on how to activate the TRIM-capability of your SSD (archlinux). Warning: this can compromise your systems security (more) # nano /etc/default/grub Edit line: GRUB_CMDLINE_LINUX_DEFAULT="cryptdevice=/dev/sda4:archlinux-lvm" to GRUB_CMDLINE_LINUX_DEFAULT="cryptdevice=/dev/sda4:archlinux-lvm:allow-discards root_trim=yes ADDITIONAL KERNEL PARAMETER LIST" After that you need to recreate your grub.cfg: # grub-mkconfig -o /boot/grub/grub.cfg Reboot your system. Try running (as root) fstrim […]