Alexander Koch <mail@xxxxxxxxxxxxxxxxx> on Thu, 27 Oct 2011 15:33:31 +0200: > Am 26.10.2011 20:46, schrieb Milan Broz: > > * Support --enable-discards option to allow discards/TRIM requests. > > > > Since kernel 3.1, dm-crypt devices optionally (not by default) support > > block discards (TRIM) comands. > > If you want to enable this operation, you have to enable it manually > > on every activation using --enable-discards > > > > cryptsetup luksOpen --enable-discards /dev/sdb test_disk > > > > WARNING: There are several security consequences, please read at least > > http://asalor.blogspot.com/2011/08/trim-dm-crypt-problems.html > > before you enable it. > > On Arch Linux, the package 'cryptsetup' contains > /lib/initcpio/hooks/encrypt, which provides a hook for mounting > encrypted volumes from initrd. > > Does anyone know if there exists any effort on making this script accept > options for cryptsetup from kernel cmdline? > The current version only reads device and mapper-name, so one cannot > open an encrypted root device with discard enabled. > > Looking at the code, I think this would not be so hard to implement > (maybe just an addidional ':'-separated field in the kernel cmdline for > options like --enable-discards), but If someone is already working on it > I won't start the hack ;) Sure... https://aur.archlinux.org/packages.php?ID=51344 https://bugs.archlinux.org/task/26610 -- Schoene Gruesse Chris _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
