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Using Rusty's suggestion I've respun the patch removing the special copy function. I've tested this patch in a guest kernel with and without qemu supplying serial numbers for the block devices and it's working as expected. When qemu supplies serial numbers, the correct value is supplied to /sys/block/vdX/serial and can be used by udev for generating disk/by-id paths (without

Using Rusty's suggestion I've respun the patch removing the special copy function. I've tested this patch in a guest kernel with and without qemu supplying serial numbers for the block devices and it's working as expected. When qemu supplies serial numbers, the correct value is supplied to /sys/block/vdX/serial and can be used by udev for generating disk/by-id paths (without

Create a new attribute for virtio-blk devices that will fetch the serial number of the block device. This attribute can be used by udev to create disk/by-id symlinks for devices that don't have a UUID (filesystem) associated with them. ATA_IDENTIFY strings are special in that they can be up to 20 chars long and aren't required to be NULL-terminated. The buffer is also zero-padded

Create a new attribute for virtio-blk devices that will fetch the serial number of the block device. This attribute can be used by udev to create disk/by-id symlinks for devices that don't have a UUID (filesystem) associated with them. ATA_IDENTIFY strings are special in that they can be up to 20 chars long and aren't required to be NULL-terminated. The buffer is also zero-padded