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Date: Fri, 6 May 2011 13:37:08 -0500 (CDT)
From: "Dyweni - Qemu-Devel" <8SScqsnYX8tr@dyweni.com>
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Subject: [Qemu-devel] Qemu + RBD = ceph::buffer::end_of_buffer
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To: qemu-devel@nongnu.org
Cc: 8sscqsnyx8tr@dyweni.com

Hi List!

I am tripping across this error as soon as the qemu rbd disk is
probed by the windows 2000 installer:

VNC server running on `127.0.0.1:5900'
terminate called after throwing an instance of 'ceph::buffer::end_of_buff=
er'
  what():  buffer::end_of_buffer
Aborted (core dumped)



Has anyone else tripped across this?



I am running the following:
  Linux Kernel 2.6.37-gentoo-r4
  Ceph 0.27
  QEMU-KVM (commit 28262112181f27f302b5186f0df6428df6b513e7)
    Pulled from: git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git
    And patched with Josh Durgin's "rbd improvements" patchset
     (http://lists.gnu.org/archive/html/qemu-devel/2011-04/msg01211.html)



The GDB Backtrace is:

#0  0x00007f7733c2a495 in raise (sig=3D<value optimized out>) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1  0x00007f7733c2b81f in abort () at abort.c:92
#2  0x00007f7733175a25 in __gnu_cxx::__verbose_terminate_handler () at
/usr/src/debug/sys-devel/gcc-4.4.5/gcc-4.4.5/libstdc++-v3/libsupc++/vterm=
inate.cc:93
#3  0x00007f7733172c64 in __cxxabiv1::__terminate (handler=3D0x7f77331758=
17
<__gnu_cxx::__verbose_terminate_handler()>)
    at
/usr/src/debug/sys-devel/gcc-4.4.5/gcc-4.4.5/libstdc++-v3/libsupc++/eh_te=
rminate.cc:38
#4  0x00007f7733172c8c in std::terminate () at
/usr/src/debug/sys-devel/gcc-4.4.5/gcc-4.4.5/libstdc++-v3/libsupc++/eh_te=
rminate.cc:48
#5  0x00007f7733172ea4 in __cxxabiv1::__cxa_throw (obj=3D0x18d62a0,
tinfo=3D0x7f7735d57ce0, dest=3D0x7f7735b4548a
<ceph::buffer::end_of_buffer::~end_of_buffer()>)
    at
/usr/src/debug/sys-devel/gcc-4.4.5/gcc-4.4.5/libstdc++-v3/libsupc++/eh_th=
row.cc:83
#6  0x00007f7735b45b31 in ceph::buffer::list::iterator::copy
(this=3D0x7f7731cb2930, len=3D4, dest=3D0x7f7731cb28dc "") at
include/buffer.h:381
#7  0x00007f7735b483de in decode_raw<__le32> (t=3D@0x7f7731cb28dc, p=3D..=
.) at
include/encoding.h:35
#8  0x00007f7735b46a40 in decode (v=3D@0x7f7731cb290c, p=3D...) at
include/encoding.h:80
#9  0x00007f7735b46b94 in decode (s=3D..., p=3D...) at include/encoding.h=
:189
#10 0x00007f77356ea3b5 in
librados::RadosClient::C_aio_sparse_read_Ack::finish (this=3D0x7f77280618=
d0,
r=3D0) at librados.cc:463
#11 0x00007f773572dff4 in Objecter::handle_osd_op_reply (this=3D0x181ff10=
,
m=3D0x18f1440) at osdc/Objecter.cc:801
#12 0x00007f77356d347c in librados::RadosClient::_dispatch
(this=3D0x181cdc0, m=3D0x18f1440) at librados.cc:751
#13 0x00007f77356d327c in librados::RadosClient::ms_dispatch
(this=3D0x181cdc0, m=3D0x18f1440) at librados.cc:717
#14 0x00007f773571d93d in Messenger::ms_deliver_dispatch (this=3D0x181f30=
0,
m=3D0x18f1440) at msg/Messenger.h:98
#15 0x00007f773570b135 in SimpleMessenger::dispatch_entry (this=3D0x181f3=
00)
at msg/SimpleMessenger.cc:352
#16 0x00007f77356e49ba in SimpleMessenger::DispatchThread::entry
(this=3D0x181f790) at msg/SimpleMessenger.h:533
#17 0x00007f773571c75d in Thread::_entry_func (arg=3D0x181f790) at
common/Thread.h:41
#18 0x00007f7736372ac4 in start_thread (arg=3D<value optimized out>) at
pthread_create.c:297
#19 0x00007f7733cc938d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:115



Thanks,
Dyweni