[Xen-bugs] [Bug 959] New: [LM] live migrate a big memory guest on ia32e platform has problems

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=959

           Summary: [LM] live migrate a big memory guest on ia32e platform
                    has problems
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: HVM
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: fan.zhao@xxxxxxxxx


Environment:
------------
Service OS (ia32/ia32e/IA64): ia32e 
Guest OS (ia32/ia32e/IA64): ia32e
Change Set: 14773
Hardware: woodcrest



Bug detailed description:
--------------------------
After live migrate a 6G guest, qemu window will not pop up on the dest machine,
and the guest could not be connected through xm console and vncviewer, and lose
network connection, but xm list shows the guest has been alive on the dest
machine.
The issue may also happen on 256M, 512M or 1G guest, though not quite easy to
reproduce sometimes.

Basic root-causing log:
----------------------
qemu.log shows:

domid: 17
qemu: the number of cpus is 4
Watching /local/domain/17/logdirty/next-active
qemu_map_cache_init nr_buckets = 10000
shared page at pfn 1ffff
buffered io page at pfn 1fffd
Time offset set 0
xs_read(): vncpasswd get error.
/vm/a8d003c7-d466-0977-52da-85e32fd0082c/vncpasswd.
char device redirected to /dev/pts/2
cirrus_vga_load:re-enable vga acc.lfb_addr=0xf0000000, lfb_end=0xf0800000.
Failed allocation for dom 17: 2048 extents of order 0
Failed to populate physmap


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