So after some additional testing it looks like NCQ Trim on the Samsung 8** drives still has "issues".
It looks like it mostly works, but once the drive gets saturated with a large trim *(i.e. deleting 5 kernel trees, and then fstrimming), the kernel starts to hit timeouts. Increasing the timeouts to 200 seconds or more appears to alleviate these errors, but upstream has already blacklisted the drive altogether for NCQ trim. https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9a9324d396967 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1338706 Title: Samsung SSD 840 failed to get NCQ Send/Recv Log Emask 0x1 failed to set xfermode (err_mask=0x40) on upstream kernels >= 3.12 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1338706/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
