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    Trim SSD on Ubuntu?

    Discussion in 'Linux Compatibility and Software' started by NickKas, May 30, 2014.

  1. NickKas

    NickKas Notebook Enthusiast

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    Hey guys,

    Does anybody knows how to trim SSD on Ubuntu 14.04 LTS?
     
    NickKas, May 30, 2014
    #1
  2. Jarhead

    Jarhead 恋の♡アカサタナ

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    Jarhead, May 30, 2014
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  3. NickKas

    NickKas Notebook Enthusiast

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    :thumbsup:
     
    NickKas, May 30, 2014
    #3
  4. Primes

    Primes Notebook Deity

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    Primes, May 30, 2014
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  5. ALLurGroceries

    ALLurGroceries  Vegan Vermin Super Moderator

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    ALLurGroceries, May 30, 2014
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  6. NickKas

    NickKas Notebook Enthusiast

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    well,I found this command

    sudo fstrim -v /

    on the net and it works!check it out!
     
    NickKas, May 31, 2014
    #6
    UNCNDL1 likes this.
  7. oled

    oled Notebook Evangelist

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    If you want it to be permanently activated you have to set the discard flag in /etc/fstab. It should look something like this.
    Code: 
    /dev/sdaX  /       ext4   defaults,noatime,discard   0  1
     
    oled, May 31, 2014
    #7
  8. Pursuvant

    Pursuvant Notebook Enthusiast

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    Please don't add "discard" to fstab, it will cause a trim every time you delete. I just set up a new Ubuntu laptop, here is a link to the complete list of things that need to be done to optimize and SSD

    https://sites.google.com/site/easyl...omatic-TRIM-by-rc.local-by-cron-or-by-discard
     
    Pursuvant, Jun 13, 2014
    #8
  9. oled

    oled Notebook Evangelist

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    Yes, and that's exactly what you want to do with the discard option.


    Please don't?
    Just because you prefer to trim manually, does not mean everybody does
     
    oled, Jun 14, 2014
    #9
  10. Pursuvant

    Pursuvant Notebook Enthusiast

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    My observation is, respectfuly, if you research you will find the 'discard' approach makes every delete operation you throw at disk, 50+ times slower than it needs to be. Not exactly why i invest in SSD's, to slow them down by less than optimal choices about alignment or trimming. Your mileage may vary
     
    Pursuvant, Jun 15, 2014
    #10
  11. boukyaku

    boukyaku Notebook Consultant

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    Right, apparently adding discard to the appropriate disk in fstab will slow the SSD down on only the manipulation of a massive amount of small files. Otherwise, you won't notice a difference.

    Adding noatime seems to lessen the wear/tear as well.

    Anyway, Ubuntu 14.04 comes with TRIM support out of the box if your SSD is intel/samsung. All it does is issue the fstrim command on your SSD(s) once a week.
     
    boukyaku, Jul 6, 2014
    #11
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  12. alexhawker

    alexhawker Spent Gladiator

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    But not Crucial?
     
    alexhawker, Jul 28, 2014
    #12
  13. Temetka

    Temetka Notebook Consultant

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    How about for Linux Mint 17 Qiana? I am dual booting between that and Windows 7. Thanks.
     
    Temetka, Aug 9, 2014
    #13
  14. JOSEA

    JOSEA NONE

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    Glad you asked, I have read this thread a few times M500/M5x0 QUEUED-TRIM data corruption alert (mostl... - Crucial Community and honestly am not sure of the answer. I just installed U 14.04.1 LTS and updated to the current stable kernel 3.16 ... on my M500 and no issues so far.
    After reading this http://www.spinics.net/lists/linux-ide/msg48361.html it seem if you are on MU05 firmware and Kernel 3.15 or above there should be no fear of data loss, can anyone confirm this or am I misreading ?
    Thanks for any inputs!
     
    JOSEA, Sep 6, 2014
    #14
  15. 3Fees

    3Fees Notebook Deity

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    Linux Mint 17 codename Qiana. is based on Ubuntu 14.04

    Linux Mint 17 Cinnamon Release Notes - Linux Mint


    Cheers
    3Fees :)

    I have Linux Mint 17.1 -Cinnamon -code named -Rebecca on my HP DV5000 Laptop with the 17.1 updated kernel,,can install 17.1-Rebecca from updates on Qiana, then install the updated Kernel as well. I did last night, very easy all bumps,ect pre-figured out by the Linux Mint team, Clem,ect,,check it out... :)
     
    3Fees, Dec 13, 2014
    #15
  16. Mr.Koala

    Mr.Koala Notebook Virtuoso

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    There was a time when the Linux kernel implemented TRIM in a less than idea way and enabling discard would result in sending a large number of small TRIMed address ranges in a row, which is why people say discard is very bad for performance.

    Basically instead of saying this:
    the kernel says this:
    This has been fixed.


    If your file system is heavily fragmented or you're handling many small files, in-line TRIM would still slow things download a bit upfront, but you get cleaner FTL and more efficient GC in the long run. Obviously, there's even less reason not to enable TRIM if you have queued TRIM support (which you do on a modern Linux kernel when not running the buggy M5X0).
     
    Last edited: Dec 22, 2014
    Mr.Koala, Dec 17, 2014
    #16
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  17. tmpfs

    tmpfs Notebook Enthusiast

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    tmpfs, Dec 25, 2014
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  18. Dufus

    Dufus .

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    If that's how it was done then "less than ideal" would be a massive understatement.
     
    Dufus, Dec 25, 2014
    #18
  19. Mr.Koala

    Mr.Koala Notebook Virtuoso

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    M550 MU02 firmware update

    M500/M5x0 QUEUED-TRIM data corruption alert (mostl... - Page 5 - Crucial Community

     
    Mr.Koala, Jan 21, 2015
    #19