Feature changed by: Tomáš Chvátal (scarabeus_iv) Feature #321838, revision 4 Title: Support TRIM/discard mode when installing to SSD - openSUSE Distribution: New + openSUSE Distribution: Rejected by Tomáš Chvátal (scarabeus_iv) + reject reason: See last comment. Priority Requester: Desirable Requested by: Peter Simons (psimons) Partner organization: openSUSE.org Description: While installing Tumbleweed (and Leap 42.2) with an encrypted disk, there is no way to enable TRIM/discard mode the for the underlying SSD. I *can* specify the "discard" mount option in the expert partitioner mode, but I cannot add the necessary "--allow-discards" option to the call to "cryptsetup" anywhere. Only *after* booting the newly installed system it's possible to enable that feature, and even then I have to manually edit /etc/crypttab to do it. Business case (Partner benefit): openSUSE.org: TRIM mode allows modern SSDs to operate faster than they can without it. There are security implications when combined with LUKS encryption, but having that ability as an optional feature sure is desirable (and many other distributions support it, too). Discussion: #1: Martin Pluskal (pluskalm) (2017-06-12 17:39:51) This behaviour is afaik intentional - enabling discard as mount option/or with luks can lead to premature degradation of many ssd devices - on other hand fstrim from util linux has service/timer which will trigger it periodically which is in most cases sufficient and safe. -- openSUSE Feature: https://features.opensuse.org/321838