On Mon, Jun 14, 2010 at 15:15, Ryan Harper <ryanh@xxxxxxxxxx> wrote: > * Kay Sievers <kay.sievers@xxxxxxxx> [2010-06-14 03:55]: >> On Thu, Jun 10, 2010 at 21:16, Ryan Harper <ryanh@xxxxxxxxxx> wrote: >> > Use the 'VBID' virtio-blk ioctl to extract drive serial numbers >> > to be used for building disk/by-id symlinks. After extracting >> > the serial number of the device it prints out the minimum info >> > needed in a similar format to `scsi_id --export` so that the >> > persistent-storage rules can process the serial information. >> > >> > This program depends on the virtio-blk serial device patches posted >> > here[1] being applied to qemu and linux-kernel. >> > >> > Here is what the output looks like: >> > >> > % ./virtioblk_id /dev/vdb >> > ID_VIRTIO=1 >> > ID_TYPE=disk >> > ID_SERIAL=QM00001 >> > ID_SERIAL_SHORT=QM00001 >> >> As requested in the ealier mail. Please provide a good reason why the >> kernel code can not create a "serial" file (or whatever fits your >> needs) in sysfs at the block device. > > I didn't see you respond John's email: > > http://www.spinics.net/lists/hotplug/msg03869.html > > which included quite bit of the gory history on this topic. Yeah, and I don't find any reason there, why a sysfs attribute will not work. Kay -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
