将 blktap 与 xen-4.1 一起使用时出现问题，运行带有 dom0 xen-4.1 的 Ubuntu Precise stock 内核。
我得到：
[ 5.580106] XENBUS: Waiting for devices to initialise: 295s...290s.
...
[ 300.580288] XENBUS: Timeout connecting to device: device/vbd/51713 (local state 3, remote state 1)
还有一些系统日志行：
May 17 13:07:30 localhost logger: /etc/xen/scripts/blktap: add XENBUS_PATH=backend/tap/10/51713
May 17 13:07:31 localhost logger: /etc/xen/scripts/blktap: Writing backend/tap/10/51713/hotplug-status connected to xenstore.
使用 tap:aio: 磁盘线。文件：/作品。
disk = [
'tap:aio:/data/root.img,xvda1,w',
]
清晰和精确的 domU 内核存在问题，两个来宾都在 Ubuntu hardy dom0 Host 64bit 2.6.24-28-xen xen-3.3 中工作
3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Distributor ID: Ubuntu
Description: Ubuntu 12.04 LTS
Release: 12.04
Codename: precise