On 3/11/24 7:28 PM, Linus Torvalds wrote: > On Mon, 11 Mar 2024 at 18:23, Jens Axboe <axboe@xxxxxxxxx> wrote: >> >>> What odd hardware are people running? >> >> Maybe older SATA based flash? But I haven't seen any of those in years. >> Or, god forbid, rotational storage? > > Christ. I haven't touched rotating rust in like twenty years by now. > > I feel dirty just thinking about it. > >> Out of curiosity, on your box where it broken, what does: >> >> grep . /sys/block/nvme0n1/queue/* >> >> say? > > Appended. > > FWIW, it's a 4TB Samsung 990 PRO (and not in a laptop, this is my > Threadripper). Summary is that this is obviously a pretty normal drive, and has the 128K transfer limit that's common there. So doesn't really explain anything in that regard. The segment size is also a bit odd at 33. The only samsung I have here is a 980 pro, which has a normal 512K limit and 128 segments. Oh well, we'll figure out what the hell went wrong, side channels are ongoing. -- Jens Axboe
