Re: [Xen-devel] Cannot save/migrate domains

[Arthur Bergman <abergman@xxxxxxxxxxx>]

And now with debugging turned in libcx.so.2.0

0x40026868 in xc_linux_save (xc_handle=8, ioctxt=0xbffff8f0) at 
xc_linux_save.c:516
516             if ( 
!translate_mfn_to_pfn(&pfn_to_mfn_frame_list[i/1024]) ){
(gdb) bt
#0  0x40026868 in xc_linux_save (xc_handle=8, ioctxt=0xbffff8f0) at 
xc_linux_save.c:516
#1  0x0804d546 in xen_domain_snd (xend=0xbffffb20, io=0x805fbe0, dom=2,
    vmconfig=0x805f6d8 "(domain (id 2) (name test) (memory 128) (maxmem 
131072) (state -b---) (cpu 0) (cpu_time 4.059911993) (up_time 
1064.72708416) (start_time 1107281260.96) (console (status listening) 
(id 17) (domain 2) ("..., vmconfig_n=666, live=0, resource=0) at 
xen_domain.c:103
#2  0x0804befb in xfr_save (args=0x805d87c, state=0xbffffa50, 
xend=0xbffffb20, file=0x805f9b8 "/tmp/bla") at xfrd.c:774
#3  0x0804c8d3 in xfrd_service (args=0x805d87c, peersock=6, peer_in=
      {sin_family = 2, sin_port = 44804, sin_addr = {s_addr = 
16777343}, sin_zero = "\000\000\000\000\000\000\000"}) at xfrd.c:950
#4  0x0804ccf4 in xfrd_accept (args=0x805d87c, sock=2) at xfrd.c:1024
#5  0x0804ce01 in xfrd_select (args=0x805d87c, listen_sock=2) at 
xfrd.c:1054
#6  0x0804d0f1 in xfrd_main (args=0x805d87c) at xfrd.c:1210
#7  0x0804d273 in main (argc=1, argv=0xbffffe24) at xfrd.c:1264

(gdb) p i
$2 = 0
(gdb) p pfn_to_mfn_frame_list[i/1024]
$3 = 105128
(gdb) p &pfn_to_mfn_frame_list[i/1024]
$4 = (long unsigned int *) 0xbfffcea0

Anything in particular I should start looking at?

-----
CTO @ Fotango Ltd
+447834716919
http://www.fotango.com/

On 1 Feb 2005, at 17:14, Arthur Bergman wrote:

> And slightly bit more..
>
>
> gdb xfrd
> (gdb) set follow-fork-mode child
> (gdb) run
> Starting program: /usr/sbin/xfrd
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to process 13699]
> 0x40026808 in xc_linux_save () from /usr/lib/libxc.so.2.0
> (gdb) bt
> #0  0x40026808 in xc_linux_save () from /usr/lib/libxc.so.2.0
> #1  0x0804d546 in xen_domain_snd (xend=0xbffffb20, io=0x805fbe0, dom=2,
>     vmconfig=0x805f6d8 "(domain (id 2) (name test) (memory 128) 
> (maxmem 131072) (state -b---) (cpu 0) (cpu_time 4.030152025) (up_time 
> 611.702224016) (start_time 1107281260.96) (console (status listening) 
> (id 17) (domain 2) ("..., vmconfig_n=666, live=0, resource=0) at 
> xen_domain.c:103
> #2  0x0804befb in xfr_save (args=0x805d87c, state=0xbffffa50, 
> xend=0xbffffb20, file=0x805f9b8 "/tmp/bla") at xfrd.c:774
> #3  0x0804c8d3 in xfrd_service (args=0x805d87c, peersock=6, peer_in=
>       {sin_family = 2, sin_port = 44292, sin_addr = {s_addr = 
> 16777343}, sin_zero = "\000\000\000\000\000\000\000"}) at xfrd.c:950
> #4  0x0804ccf4 in xfrd_accept (args=0x805d87c, sock=2) at xfrd.c:1024
> #5  0x0804ce01 in xfrd_select (args=0x805d87c, listen_sock=2) at 
> xfrd.c:1054
> #6  0x0804d0f1 in xfrd_main (args=0x805d87c) at xfrd.c:1210
> #7  0x0804d273 in main (argc=1, argv=0xbffffe24) at xfrd.c:1264
> (gdb)
>
> I guess I am going to need to recompile with debugging on.
>
> Cheers
> Arthur
>
> -----

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