NeilBrown <neilb@xxxxxxx> writes: > On Wed, 29 Jun 2011 11:32:55 +0100 (BST) Tom De Mulder <tdm27@xxxxxxxxx> > wrote: > >> On Tue, 28 Jun 2011, Mathias Burén wrote: >> >> > IIRC md can already pass TRIM down, but I think the filesystem needs >> > to know about the underlying architecture, or something, for TRIM to >> > work in RAID. >> >> Yes, it's (usually/ideally) the filesystem's job to invoke the TRIM >> command, and that's what ext4 can do. I have it working just fine on >> single drives, but for reasons of service reliability would need to get >> RAID to work. >> >> I tried (on an admittedly vanilla Ubuntu 2.6.38 kernel) the same on a two >> drive RAID1 md and it definitely didn't work (the blocks didn't get marked >> as unused and zeroed). >> >> > There's numerous discussions on this in the archives of >> > this mailing list. >> >> Given how fast things move in the world of SSDs at the moment, I wanted to >> check if any progress was made since. :-) I don't seem to be able to find >> any reference to this in recent kernel source commits (but I'm a complete >> amateur when it comes to git). > > > Trim support for md is a long way down my list of interesting projects (and > no-one else has volunteered). > Just out of curiosity, what are there in your list? :) -- Regards, Namhyung Kim -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
