Setting Trim _AFTER_ a New Install
Warren Block
wblock at wonkity.com
Thu Apr 9 21:27:35 UTC 2015
On Thu, 9 Apr 2015, mfv wrote:
> Hello,
>
> I've recently installed FreeBSD r10.1 using bsdinstall and then loaded
> a large number of programs and data. After spending considerable time
> on the installation I discovered that my SSD has TRIM which appears
> to be quite useful. After some investigation I understand that it is a
> simple flag that can be set after booting into single user mode.
>
> I hope my questions are simple:
>
> If TRIM is enabled will it mess up the disk so that everything has to be
> reinstalled?
No, it will not harm the data. That said, before running tunefs to
enable it, make a backup. Always make a backup.
> If not, is there anything else I should be aware of?
If you used ZFS-on-root, tunefs(8) and TRIM do not apply. ZFS uses TRIM
natively now, but I'm not sure if that was in 10.1 or only now in
10-STABLE.
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