> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Edward Ned Harvey > > My google-fu is coming up short on this one... I didn't see that it had been > discussed in a while ...
BTW, there were a bunch of places where people said "ZFS doesn't need trim." Which I hope, by now, has been commonly acknowledged as bunk. The only situation where you don't need TRIM on a SSD is when (a) you're going to fill it once and never write to it again, which is highly unlikely considering the fact that you're buying a device for its fast write performance... (b) you don't care about performance, which is highly unlikely considering the fact that you bought a performance device ... (c) you are using whole disk encryption. This is a valid point. You would probably never TRIM anything from a fully encrypted disk ... In places where people said TRIM was thought to be unnecessary, the justification they stated was that TRIM will only benefit people whose usage patterns are sporadic, rather than sustained. The downfall of that argument is the assumption that the device can't perform TRIM operations simultaneously while performing other operations. That may be true in some cases, or even globally, but without backing, it's just an assumption. One which I find highly quesitonable. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
