[Qemu-devel] [PATCH v3 0/2] Add virtio-blk support to persistent-storage rules

[Ryan Harper]

This patch series provides updates to udev to allow the creation symlinks for
virtio-blk devices, specifically disk/by-id and disk/by-path.  This is most
useful for virtio-blk devices that do not yet have any filesystem for which a
UUID can be extracted (disk/by-uuid).  These patches (save the path_id fix)
require an updated[1] qemu (on the host) and virtio-blk (in the guest)[2]  to
generate the by-id path; however if the guest or host qemu isn't capable
then no action is taken.

Changes since v2:
- Added 'serial' sysfs attribute to virtio-blk code upstream [2]
- Dropped VBID ioctl upstream [3]
- Switched rules to extract serial attributes directly

Changes since v1:
- Switch ID_VIRTIO_SERIAL to ID_SERIAL
- Switched IOCTL_CMD to use numeric value
- Add ID_SERIAL_SHORT
- Update persistent-storage rules to use ID_SERIAL for virtioblk_id


1. http://lists.gnu.org/archive/html/qemu-devel/2010-03/msg01869.html
2. 
https://lists.linux-foundation.org/pipermail/virtualization/2010-June/015326.html
3. 
https://lists.linux-foundation.org/pipermail/virtualization/2010-June/015325.html