On Wed, Jan 11, 2017 at 08:09:37PM -0500, Mike Snitzer wrote: > I'm not following your reasoning. > > dm_blk_ioctl calls __blkdev_driver_ioctl and will call scsi_cmd_ioctl > (sd_ioctl -> scsi_cmd_blk_ioctl -> scsi_cmd_ioctl) if DM's underlying > block device is a scsi device. Yes, it it does. But scsi_cmd_ioctl as called from sd_ioctl will operate entirely on the SCSI request_queue - dm-mpath will never see the BLOCK_PC request generated by it. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
