On 08/11/2016 06:38 PM, Kamble, Nitin A wrote: > > SCSI block devices has SG_IO IOCTL interface by which applications can identify the device uniquely. This helps applications identify the device uniquely without relying on the device file names or any other mechanisms. > > For more details l ook at the manpage of sg_inq commnad. https://manned.org/sg_inq > > Some of the non SCSI devices also support this SG_IO interface for inquiry. Examples include SATA, NVME, Virtual Disks. > > It is desired to identify every RBD uniquely just from the device file. It will help in using RBD devices as drop in replacement for SCSI/SATA devices. Currently the RBD code in ceph-client does not support the SG_IO ioctl interface for inquiry to identify the device uniquely. Has adding the SG_IO ioctl interface to the RBD devices ever been considered before? > What application do you need this for right now? Is it udev's scsi_id? What pages do you need? Just 0x83? -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
