Dear all,
playing around a while to test ata-trim, pve 3.4, 3.10.0-8, on Samsung ssd 840+850 both evo.
Host on ext4, noop, noatime, barrier=0, without discard, running fstrim periodically by cron.
Windows guest Win7, 0.1.103 virtio, qcow2 with discard option, validation by trimcheck.exe and...