I am running my root fs on an lvm lv situated on a pv built on an SSD, and have noticed that ureadahead is optimizing for rotational disks instead of SSD. This is because the dm-0 block device's queue/rotational entry in sysfs reports 1 instead of 0. It seems that this should be set to match the value of the underlying pv. Would this be possible and if so, would it be very difficult? -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel