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Thread: Kingston SSD Now V100

  1. #1
    Join Date
    Mar 2011
    Beans
    1

    Kingston SSD Now V100

    I'm running Maverick on a Kingston SSD Now V100 and am having issues getting trim to work, I've added discard to my /etc/fstab, but haven't been able to confirm that it's working (using the HowTo HOWTO: Check If TRIM On Ext4...)

    The following output implies that TRIM should be working:
    Code:
    root@Tips-X100e:~# uname -a
    Linux Tips-X100e 2.6.35-28-generic #49-Ubuntu SMP Tue Mar 1 14:39:03 UTC 2011 x86_64 GNU/Linux
    
    root@Tips-X100e:~# hdparm -I /dev/sda | grep -i trim
    	   *	Data Set Management TRIM supported
    
    root@Tips-X100e:/var/tmp# hdparm -V
    hdparm v9.27
    I also tried skiping wiper and using hdparm --trim-sector-ranges (very carefully )
    Code:
    root@Tips-X100e:/var/tmp# dd if=/dev/urandom of=tempfile count=10 bs=1M
    10+0 records in
    10+0 records out
    10485760 bytes (10 MB) copied, 2.90546 s, 3.6 MB/s
    
    root@Tips-X100e:/var/tmp# hdparm --fibmap tempfile 
    tempfile:
     filesystem blocksize 4096, begins at LBA 2048; assuming 512 byte sectors.
     byte_offset  begin_LBA    end_LBA    sectors
               0   57133056   57149439      16384
         8388608   57243648   57247743       4096
    
    root@Tips-X100e:/var/tmp# rm tempfile; sync
    
    root@Tips-X100e:/var/tmp# hdparm --read-sector 57133056 /dev/sda | head -n 10
    /dev/sda:
    reading sector 57133056: succeeded
    ed46 95eb 2e78 ea9b 29d2 070e dc8d a893
    00b4 3f23 b270 5f86 32f4 2c46 0fc8 2dac
    fa7d 6c14 72b4 615d 1d03 d8aa 5dd9 facb
    a555 4354 68c3 b64d 1a25 1507 d455 eed3
    ee21 2c75 3cbe 9c23 ea11 8812 0580 612b
    dc31 463f dcba 658b a604 2cc9 b48e 3d00
    f4d6 5270 6037 7b9c 11ca 3198 1587 5617
    
    root@Tips-X100e:/var/tmp# hdparm --please-destroy-my-drive --trim-sector-ranges 57133056:16384 /dev/sda
    /dev/sda:
    trimming 16384 sectors from 1 ranges
    succeeded
    
    root@Tips-X100e:/var/tmp# hdparm --read-sector 57133056 /dev/sda | head -n 10
    /dev/sda:
    reading sector 57133056: succeeded
    ed46 95eb 2e78 ea9b 29d2 070e dc8d a893
    00b4 3f23 b270 5f86 32f4 2c46 0fc8 2dac
    fa7d 6c14 72b4 615d 1d03 d8aa 5dd9 facb
    a555 4354 68c3 b64d 1a25 1507 d455 eed3
    ee21 2c75 3cbe 9c23 ea11 8812 0580 612b
    dc31 463f dcba 658b a604 2cc9 b48e 3d00
    f4d6 5270 6037 7b9c 11ca 3198 1587 5617
    I've also tried the above with and without the discard flag in fstab.

    As you can see, the drive doesn't appear to be TRIMed, does anyone have any suggestions, or have I just lucked out and bought a drive that says it supports TRIM but doesn't really?

    Thanks,
    John

  2. #2
    Join Date
    Apr 2006
    Location
    Nova Scotia, eh?
    Beans
    34
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Kingston SSD Now V100

    Oooo, looks like I am going to be having fun in the near future. I have a 64GB Kingston v100 on order for myself.

    I have been doing an awful lot of reading on alignment of SSDs, I am catching on a little, but not enough to help out.

    My use will be a small lightweight web-server, atom based, 2gb ram and this little gem.


    What firmware are you using on your SSD?

    According to http://www.legitreviews.com/article/1556/2/, the controller does support TRIM.
    Last edited by imac_89; April 11th, 2011 at 02:14 AM. Reason: Need to focus on issue, reply wasn't relevant
    W.C.H

    I can throw rocks at houses and not be punished.
    Curling 101.

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