gjournal and TRIM: A safe combination?

Warren Block wblock at wonkity.com
Wed Oct 21 14:30:50 UTC 2015

On Wed, 21 Oct 2015, Brandon J. Wandersee wrote:

> krad writes:
>> I thought SU+J was the preferred method these days, not gjournal. I quite
>> out of touch with ufs these days though.
> I thought the opposite, myself. `gjournal` has its own section in the
> Handbook, while SU+J isn't even mentioned. I also thought there was
> something fundamentally different about them--like SU+J simply maintains
> filesystem integrity, while gjournal actually protects files from the
> write hole as well as protecting the filesystem. I could be wrong.

This is correct.  SUJ is only concerned with filesystem integrity.

But if you are considering gjournal, why not go the whole way and just 
use ZFS?

More information about the freebsd-questions mailing list