fstrim questions - what SSD manufactures does it work with and re-building initramfs

[anika200]

I have been looking into trim and SSD and would like to get some clarification if possible.

From a thread here I learned fstrim is run in a weekly crontab but it only works on certain drives as the comment states:

lee@lee-kdeU:~$ cat /etc/cron.weekly/fstrim
#!/bin/sh
# call fstrim-all to trim all mounted file systems which support it
set -e

# This only runs on Intel and Samsung SSDs by default, as some SSDs with faulty
# firmware may encounter data loss problems when running fstrim under high I/O
# load (e. g.  https://launchpad.net/bugs/1259829). You can append the
# --no-model-check option here to disable the vendor check and run fstrim on
# all SSD drives.
exec fstrim-all

Question: Is there a list of drives that this should or should not work on somewhere? Is there a test that can be done?

Switching directions slightly:
Assuming I can safely run fstrim on my drives, do I need to re-build initramfs as stated in the following blog near the bottom. http://blog.neutrino.es/2013/howto-p...m-and-dmcrypt/
Or is this unnecessary as it does not seem to be part of the /etc/cron.weekly/fstrim crontab on Kubuntu.