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Martin Hope
m.umar
Asked: 2018-05-10 10:11:26 +0800 CST
  • 66

I know that weekly TRIM is enabled by default from 14.10 onwards. Source: How to enable TRIM? But running sudo nano /etc/cron.weekly/fstrim returns an empty file. Also tail -n1 /etc/cron.weekly/fstrim says that this file does not exist.

Running lsblk -D returns non zero values for DISC-GRAN and DISC-MAX so TRIM is supported on my SSD. Is weekly TRIM actually enabled for my SSD or not?

I am using a Kingston SSD

ssd trim 18.04
Martin Hope
keiki
Asked: 2013-07-28 05:22:03 +0800 CST
  • 128

We all know that SSDs have a limited predetermined life span. So the question for me is how do I check in (Ubuntu) Linux what the current health status of my SSD is? And maybe an estimation how long it will take?

Graphical tool is preferred, but command line tool would also be fine.

I'm using Xubuntu 12.04 LTS

ssd
Martin Hope
Lekensteyn
Asked: 2011-05-13 06:01:57 +0800 CST
  • 69

I've just received my new SSD since the old one died. This Intel 320 SSD supports TRIM. For testing purposes, my dealer put Windows on it, but I want to get rid of this and install Kubuntu on it.

It does not have to be a "secure wipe", I just need the empty the disk in the most healthy way. I believe that dd if=/dev/zero of=/dev/sda just fills the blocks with zeroes and thereby taking another write (correct me if I'm wrong).

I've seen the answer How to enable TRIM, but it looks like it's suited for clearing empty blocks, not wiping the disk.

hdparm seems to be the program to do it, but I'm not sure if it clears the disk OR cleans empty blocks. From its manual page:

  --trim-sector-ranges
          For  Solid State Drives (SSDs).  EXCEPTIONALLY DANGEROUS. DO NOT
          USE THIS OPTION!!  Tells the drive firmware to discard  unneeded
          data  sectors,  destroying  any  data that may have been present
          within them.  This makes those sectors available  for  immediate
          use  by  the firmware's garbage collection mechanism, to improve
          scheduling for wear-leveling of the flash  media.   This  option
          expects  one  or  more  sector range pairs immediately after the
          option: an LBA starting address, a colon, and  a  sector  count,
          with no intervening spaces.  EXCEPTIONALLY DANGEROUS. DO NOT USE
          THIS OPTION!!

          E.g.  hdparm --trim-sector-ranges 1000:4 7894:16 /dev/sdz

How can I make all blocks appear as empty using TRIM?

ssd
Martin Hope
Uli
Asked: 2010-12-27 04:44:03 +0800 CST
  • 198

I know that the Linux kernel supports TRIM as of version 2.6.33, so there should be TRIM support in ubuntu.

Is TRIM enabled by default or do I need to change some settings or install additional software for it to work? If so, how?

ssd trim