On Wed, 4 Dec 2013, Akemi Yagi wrote: > In addition to the RH doc referenced by LF, I found this web page useful: > > http://blog.neutrino.es/2013/howto-properly-activate-trim-for-your-ssd-on-linux-fstrim-lvm-and-dmcrypt/ > > Quote: [....] > > Instead, what I recommend is to run a script periodically to tell > the SSD which blocks are free with the command fstrim. Doing this > operation daily or weekly is more than enough. This way we do not > lose any performance due to TRIM when deleting files and we > periodically keep informed the SSD about the free blocks." I was pondering dropping in a cron job that invokes fstrim on servers with SSDs, esp. now that 6.5 supports TRIM on MD RAID-1 devices. It appears that making it a weekly job will do the trick. -- Paul Heinlein heinlein at madboa.com 45°38' N, 122°6' W