15

Does any know if there is a way to enable TRIM support on Linux for SSDs? This is included with Windows 7, and I was surprised that I couldn't find much information about it under Linux.

Info on SSD and TRIM can be found here - http://www.anandtech.com/storage/showdoc.aspx?i=3531&p=10

Improve this question
1

6 Answers 6

Reset to default
13

Notice that you probably need a more recent kernel than 2.6.28, see here (based on 2.6.30-rc4 with last activity in May this year). I do not know to what degree that tree has been merged, maybe you can search the [email protected] mailing list. Update: see for instance this thread (also discussed on the kernel list).

For using TRIM you are probably interested in hdparm-9.20, released a few days ago (and I see there is even a newer wiper-1.7 release).

Update: See also this LWN article about the relationship between filesystem, TRIM, performance and SSD disks.

Improve this answer
5

Linux supported the TRIM command in 2.6.28, released on December 25, 2008. See here for details.

Improve this answer
2
  • 1
    Does this require file system support also?
    – dlux
    Aug 6, 2009 at 21:20
  • 1
    [citation needed]
    – Andrew Coleson
    Oct 26, 2009 at 22:36
2

I think Linux already supports Trim. Its just no SSD has support for it yet. The firmware upgrade is required for current generation OCZ and Intel drives for Trim to be enabled.

Improve this answer
4
  • 1
    According to ocztechnology.com/products/flash_drives/… at least some OCZ products support TRIM.
    – ChrisInEdmonton
    Aug 6, 2009 at 20:47
  • Then you are mistaken. I am following OCZ news in their forums and TRIM has not been released yet.
    – Pyrolistical
    Aug 6, 2009 at 21:04
  • 1
    Really? That's strange, because that page explicitly includes the following quote: "With the latest firmware update you also get a TRIM tool which other SSD manufacturers have failed to implement so far." Strange that they would falsely claim a feature they don't have, but it wouldn't be the first time a company did so.
    – ChrisInEdmonton
    Aug 6, 2009 at 22:31
  • 1
    That's a review site that got it wrong. I think what they meant to say is the latest FW has idle garbage collection.
    – Pyrolistical
    Aug 6, 2009 at 23:55
2

For ext4 you have to add the discard option in your fstab to enable ATA Trim.

See also this nice how-to

Improve this answer
1

Initial support added in 2.6.28, 2.6.33 has "full" trim support... whatever that means.

Improve this answer
0

I tracked TRIM command on UBUNTU 9.10. But I can't find any TRIM Command when I'm using the kernel 2.6.31. When I generated TRIM command using the hdparm, I can find TRIM command. So, I think current linux kernel version does not support TRIM command.

Improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .