Hi there. For a while I've been using LUKS/dm-crypt with LVM2 to secure hard drives in laptops and servers. Recently I've moved one of my filesystems onto a solid-state drive (Intel X25-M-G2 80GB with latest firmware). There are some excellent instructions here http://thunk.org/tytso/blog/2009/02/20/aligning-filesystems-to-an-ssds-erase-block-size/ on how to align ext4 and LVM to the erase block size of the SSD. However I've not been able to find a recipe for optimising an encrypted filesystem in the same way. A typical usage case for me would be this, from following defaults for encrypted lvm on the Debian installer: /dev/sda1 79GB crypt-luks /dev/mapper/sda1_crypt holds PV for LVM2 PV has a VG with two LVs, 4GB swap and the rest for ext4 / /dev/sda5 256MB ext2 /boot Could anyone explain how I might go about aligning/optimising this, or point me to some instructions? Am I better putting lvm over luks or luks over lvm? Or something entirely different? Thanks in advance, Mark
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