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Thu Jan 29 21:13:42 EST 2015

fstrim

root@tp:~# hdparm -I /dev/sda | grep TRIM
           *    Data Set Management TRIM supported (limit 1 block)
           *    Deterministic read data after TRIM
root@tp:~# fstrim -v /
/: 84.4 GiB (90576441344 bytes) trimmed

http://man7.org/linux/man-pages/man8/fstrim.8.html




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