I've been reading the section 'LUKS on LVM' in the wiki page https://wiki.archlinux.org/index.php/Dm-crypt/Encrypting_an_entire_system and there's something I fail to understand. Under 'Preparing the logical volumes', there is: # lvcreate -L 500M -n tmp MyVol (which isn't shown in the ascii picture just above). Later, under 'Configuring fstab and crypttab' a tmpfs is created on the encrypted /tmp partition: dev/mapper/tmp /tmp tmpfs defaults 0 0 Question: as far as I've understood, a tmpfs resides in RAM, with overflow to /swap. So why is there a logical volume for /tmp ? Or put otherwise, if /tmp is to reside on disk, why use a tmpfs ? TIA, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow)