On 22/07/2020 08:28, Christoph Hellwig wrote: > Ever since the switch to blk-mq, a lower device not use by VM in-use/used? ~^ Also this looks like the last user of 'dev_lower_blocked' so it could be removed from device_statistics if it's not an ABI (not sure with this netlink stuff). -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel