Hans, > I just realized that all newer Samsung models are non SATA... > > Still I cponsider it likely that some of the other vendors also > implement queued trim support and there are no reports of issues > with the other vendors' SSDs. When I originally worked on this the only other drive that supported queued trim was a specific controller generation from Crucial/Micron. Since performance-sensitive workloads quickly moved to NVMe, I don't know if implementing queued trim has been very high on the SSD manufacturers' todo lists. FWIW, I just checked and none of the more recent SATA SSD drives I happen to have support queued trim. Purely anecdotal: I have a Samsung 863 which I believe is architecturally very similar to the 860. That drive clocked over 40K hours as my main git repo/build drive until it was retired last fall. And it ran a queued fstrim every night. Anyway. I am not against disabling queued trim for these drives. As far as I'm concerned it was a feature that didn't quite get enough industry momentum. It just irks me that we don't have a good understanding of why it works for some and not for others... -- Martin K. Petersen Oracle Linux Engineering
