我试图启动一个Ubuntu 12.04 Precise DomU（Dom0是Ubuntu 12.04，带有xen-hypervisor-4.1-amd64），并且启动失败，把我放回到shell（见下文）。 我正在使用tap2：tapdisk：aio作为磁盘，图像是文件而不是LV。
[ 0.288373] PPP generic driver version 2.4.2 [ 0.288447] Initialising Xen virtual ethernet driver. [ 0.291051] blkfront: xvda2: barrier or flush: disabled [ 0.293032] Setting capacity to 16777216 [ 0.293047] xvda2: detected capacity change from 0 to 8589934592 [ 0.293722] blkfront: xvda1: barrier or flush: disabled [ 0.294558] Setting capacity to 2097152 [ 0.294568] xvda1: detected capacity change from 0 to 1073741824 [ 0.295536] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 0.295561] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 0.295578] uhci_hcd: USB Universal Host Controller Interface driver [ 0.295632] usbcore: registered new interface driver libusual [ 0.295667] i8042: PNP: No PS/2 controller found. Probing ports directly. [ 0.296509] i8042: No controller found [ 0.296631] mousedev: PS/2 mouse device common for all mice [ 0.336576] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0 [ 0.336642] rtc_cmos: probe of rtc_cmos failed with error -38 [ 0.336752] device-mapper: uevent: version 1.0.3 [ 0.336845] device-mapper: ioctl: 4.22.0-ioctl (2011-10-19) initialised: [email protected] [ 0.336865] EFI Variables Facility v0.08 2004-May-17 [ 0.337194] TCP cubic registered [ 0.337334] NET: Registered protocol family 10 [ 0.338180] NET: Registered protocol family 17 [ 0.338211] Registering the dns_resolver key type [ 0.338386] registered taskstats version 1 [ 0.352167] XENBUS: Device with no driver: device/console/0 [ 0.352193] Magic number: 1:252:3141 [ 0.352250] /build/buildd/linux-3.2.0/drivers/rtc/hctosys.c: unable to open rtc device (rtc0) [ 0.352264] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found [ 0.352271] EDD information not available. [ 0.352908] Freeing unused kernel memory: 920k freed [ 0.353349] Write protecting the kernel read-only data: 12288k [ 0.361520] Freeing unused kernel memory: 1608k freed [ 0.362954] Freeing unused kernel memory: 1196k freed Loading, please wait... [ 0.419345] udevd[82]: starting version 175 BusyBox v1.18.5 (Ubuntu 1:1.18.5-1ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) Xen日志给了我;
[2012-07-22 21:33:37 1382] INFO (XendDomain:1225) Domain test1 (3) unpaused. [2012-07-22 21:33:37 1382] WARNING (XendDomainInfo:581) Could not unpause blktap disk: ('unpause', '-p2441', '-m0') failed (5632 )