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I'm running Ubuntu 10.04 and lshw
shows a "SAMSUNG SSD UM41". Thanks to SU, I determined previously that my system isn't using TRIM.
Summary:
- my BIOS SATA settings should say AHCI (check)
- kernel .28+ supports it (using .32)
- ext4 supports it (using ext4)
- my disk manfuacturer says I support it
hdparm -I /dev/sda
should say that I'm using TRIM (fail! using hdparm 9.30)
How do I determine what's preventing TRIM from being used, and how might I remedy this?
Does
hdparm -I
explicitly say you're not using TRIM, or does it not mention it at all? The reason I ask is I believe you need a relatively recent version of hdparm. – Karl Bielefeldt – 2010-08-27T20:02:15.387It doesn't mention it at all, but I was using 9.30 which I believe should be recent-enough. – Yang – 2010-12-04T03:38:26.103