[Xen-bugs] [Bug 951] New: [SR] save restore guest with VBD twice will cause problems

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=951

           Summary: [SR] save restore guest with VBD twice will cause
                    problems
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: HVM
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: fan.zhao@xxxxxxxxx


Environment:
------------
Service OS (ia32/ia32e/IA64): pae
Guest OS (ia32/ia32e/IA64): ia32 smp vcpus=4 acpi=1 apic=1 pae=0
Change Set: 14753
Hardware: conroe



Bug detailed description:
--------------------------
I create an hvm guest and insert vbd module in the guest. I can see the xvda
partition through fdisk, and I can mount it and copy files. Then I save and
restore the guest, the guest may crash as soon as the second times' restore, or
there will be some trace info printed on the guest console, or the second
time's save will fail.

BTW, sometimes even for the first time restore, there will be some trace info
printed on the guest console, but not every time.

All the failures happen when copy files in the guest, but no failure will
happen if there is no workload running in the guest.


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