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[Xen-bugs] [Bug 1430] New: Failed to start guest wih qcow/qcow2 image ag

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Subject: [Xen-bugs] [Bug 1430] New: Failed to start guest wih qcow/qcow2 image against c/s 19349
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Date: Thu, 12 Mar 2009 21:21:07 -0700
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           Summary: Failed to start guest wih qcow/qcow2 image against c/s
           Product: Xen
           Version: unstable
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Tools
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: haicheng.li@xxxxxxxxx

Service Arch (ia32/ia32e/IA64): ia32/ia32e
Guest Arch (ia32/ia32e/IA64): ia32/ia32e
Guest OS Type (Linux/Windows):
Change Set: 19349
Hardware: Stoakley

Bug detailed description:
fail to bootup guest with qcow/qcow2 images against C/s 19349

Reproduce steps:
1. bootup xen
2. use "qcow-create -f qcow2 -r 10 qcowimg baseimg" to create a qcow2 image
3. bootup qcow2 image, failed


Basic root-causing log:
Error: Device 768 (tap) could not be connected. Setting up the backend failed.
See the log files in /var/log/xen/ for details.

qemu log:
domid: 52
qemu: the number of cpus is 1
config qemu network with xen bridge for  tap52.0 xenbr2
Strip off blktap sub-type prefix to /share/xvs/var/img.vmxCPL_MEM_02 (drv
Watching /local/domain/0/device-model/52/logdirty/next-active
Watching /local/domain/0/device-model/52/command
xs_read(): vncpasswd get error.
char device redirected to /dev/pts/4
qemu_map_cache_init nr_buckets = 10000 size 3145728
shared page at pfn feffd
buffered io page at pfn feffb
Guest uuid = 89909713-da49-1a8e-65f7-1d1b7b674846
Time offset set 0
populating video RAM at ff000000
mapping video RAM from ff000000
Register xen platform.
Done register platform.
xs_read(/local/domain/0/device-model/52/xen_extended_power_mgmt): read error
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0

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