Further I wonder if /etc/lvm/lvm.conf needs issue_discards = 1 Both / and /home are actually LV's which are made from the LUKS PV. So trim pass down from dmcrypt to block device isn't enough to do anything. ext4 (discard mount option or fstrim.service) -> LVM (issue_discards=1 in lvm.conf) -> dmcrypt (discard set in crypttab or rd.luks.options=discard as boot param). If any of those is not true, then I'm pretty sure discard isn't going to go to the real device. And doing this by default for everyone is a bad idea because there are so many non-queued trim SSDs floating around still. -- Chris Murphy _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
