Re: Assert in OSD::build_incremental_map_msg

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On 12/16/2011 10:56 AM, Sage Weil wrote:
Hi Jim,

Are you able to generate an osd log leading up to this crash?

	debug osd = 20
	debug filestore = 10
	debug ms = 1

Sent by private email.

Thanks for taking a look.

-- Jim


sage


On Fri, 16 Dec 2011, Jim Schutt wrote:

Hi,

I've been seeing current master branch assert in
OSD::build_incremental_map_msg during peering when starting
a new filesystem for the first time.

This behavior bisects to commit 0807e7d523:

     hobject_t: make filestore_hobject_key_t 64 bits

     So we can return 0x100000000 when max=true.

     Signed-off-by: Sage Weil<sage.weil@xxxxxxxxxxxxx>


Here's an example of the assert:

(gdb) bt
#0  __memcpy_ssse3_back () at
../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:1631
#1  0x00000000008f4be7 in ceph::BackTrace::print (this=0x7f2b89908270,
out=...) at common/BackTrace.cc:37
#2  0x00000000008e2627 in handle_fatal_signal (signum=11) at
global/signal_handler.cc:103
#3<signal handler called>
#4  __memcpy_ssse3_back () at
../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:1475
#5  0x00000000008f4be7 in ceph::BackTrace::print (this=0x7f2b89909030,
out=...) at common/BackTrace.cc:37
#6  0x00000000008e2627 in handle_fatal_signal (signum=6) at
global/signal_handler.cc:103
#7<signal handler called>
#8  0x00007f2b9500f885 in raise (sig=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#9  0x00007f2b95011065 in abort () at abort.c:92
#10 0x0000003be84bea7d in __gnu_cxx::__verbose_terminate_handler() () from
/usr/lib64/libstdc++.so.6
#11 0x0000003be84bcc06 in ?? () from /usr/lib64/libstdc++.so.6
#12 0x0000003be84bcc33 in std::terminate() () from /usr/lib64/libstdc++.so.6
#13 0x0000003be84bcd2e in __cxa_throw () from /usr/lib64/libstdc++.so.6
#14 0x00000000008fd19d in ceph::__ceph_assert_fail (assertion=0xac97b0 "0 ==
\"missing an osdmap on disk\"",
     file=0xac777f "osd/OSD.cc", line=3662, func=0xacb240 "MOSDMap*
OSD::build_incremental_map_msg(epoch_t, epoch_t)")
     at common/assert.cc:70
#15 0x000000000087b558 in OSD::build_incremental_map_msg (this=0x21d8000,
since=16, to=22) at osd/OSD.cc:3662
#16 0x000000000087b95c in OSD::send_incremental_map (this=0x21d8000, since=16,
inst=..., lazy=false) at osd/OSD.cc:3699
#17 0x0000000000870d20 in OSD::_share_map_outgoing (this=0x21d8000, inst=...)
at osd/OSD.cc:2627
#18 0x0000000000866a5a in OSD::handle_osd_ping (this=0x21d8000, m=0x2542fc0)
at osd/OSD.cc:1613
#19 0x00000000008712d3 in OSD::heartbeat_dispatch (this=0x21d8000,
m=0x2542fc0) at osd/OSD.cc:2652
#20 0x00000000008962bd in OSD::HeartbeatDispatcher::ms_dispatch
(this=0x21d8a48, m=0x2542fc0) at osd/OSD.h:283
#21 0x000000000091e941 in Messenger::ms_deliver_dispatch (this=0x21a0500,
m=0x2542fc0) at msg/Messenger.h:102
#22 0x00000000009081b0 in SimpleMessenger::dispatch_entry (this=0x21a0500) at
msg/SimpleMessenger.cc:360
#23 0x00000000007a0c0e in SimpleMessenger::DispatchThread::entry
(this=0x21a0998) at msg/SimpleMessenger.h:544
#24 0x0000000000969d1b in Thread::_entry_func (arg=0x21a0998) at
common/Thread.cc:41
#25 0x00007f2b95d057f1 in start_thread (arg=0x7f2b8990d700) at
pthread_create.c:301
#26 0x00007f2b950c270d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:115


Thanks -- Jim

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