I recommend having LUKS be "under" LVM. the layers would be: /dev/sda -> partition (/dev/sda1) -> LUKS (/dev/sda1_crypt) -> LVM physical volume -> volume group -> logical volume -> filesystem The layers described above are how the Ubuntu installer sets up an encrypted LVM filesystem. As far as I know, TRIM is passed through LUKS and the LVM layers if it's available in the hardware. Sincerely, Jason --------------------------------------------------------------------------- Jason Edgecombe | Linux Administrator UNC Charlotte | The William States Lee College of Engineering 9201 University City Blvd. | Charlotte, NC 28223-0001 Phone: 704-687-1943 jwedgeco at uncc.edu | http://engr.uncc.edu | Facebook --------------------------------------------------------------------------- If you are not the intended recipient of this transmission or a person responsible for delivering it to the intended recipient, any disclosure, copying, distribution, or other use of any of the information in this transmission is strictly prohibited. If you have received this transmission in error, please notify me immediately by reply e-mail or by telephone at 704-687-1943. Thank you. On Tue, Jun 16, 2020 at 1:42 PM Leon Fauster via CentOS <centos at centos.org> wrote: > Hi all, > > with regard to LUKS; should it placed before LVM or after? Any > recommendations? TRIM command fully supported through all layers etc? > > -- > Leon > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >