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On Thu, 03 Jul 2014 21:37:58 +0100 Mike Grant <mgg+dclug@xxxxxxxxxxxxxx> wrote: > I've been running SSDs on my home machines and laptops for a while now > without any significant issues. I went for the 'discard' option. > Perhaps the only real advice I'd give is make sure to have plenty of > free space (~25%) so there's room for blocks to move around. I have > noticed the performance struggled when the disk was very full. > A quick check shows me that I am using 11% of the space on the drive at the moment. I am never likely to even get close to 50%. But there is no unallocated space, if that is what you mean. > The only minor issue was that encrypted filesystems eat the discard by > default, as it gives a strong hint to the bad guys as to where live > data are. LVM may or may not also pass the discards down to the > disk. You can enable both of these pretty easily if you want (e.g. > http://blog.neutrino.es/2013/howto-properly-activate-trim-for-your-ssd-on-linux-fstrim-lvm-and-dmcrypt/). > I never use LVM. I may install truecrypt at some time. If so I will research it carefully first. Thanks for the tip. Meanwhile discard and noatime are now included in fstab as I said. Thanks Neil -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq