TRIM considerations when repartitioning a SSD

Adam Vande More amvandemore at
Thu Aug 28 22:24:05 UTC 2014

On Thu, Aug 28, 2014 at 4:54 PM, Mike Clarke <jmc-freebsd2 at>

> I may soon need to repartition a SSD which has a zpool on it and was
> wondering what is the best method of ensuring that all blocks get
> marked as no longer in use.
> Is gpart sufficiently TRIM aware to be able to just use gpart delete?

Extremely doubtful that it is.  You generally must reset the drive eg

camcontrol security da4 -s buhbyesweetdata -e buhbyesweetdata


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