Hi Simon!
You will need to add the '-ggdb' flag when compiling Ceph. Also, you will
need to remove all optimizations flags (i.e. -O*).
Thanks,
Dyweni
> Hi folks,
>
> When I want to trace the stack of ceph in gdb, I set a breakpoint at
> Objecter::send_op(Op *op), some of the stack can't be showed. It
> just came out with "??"
> Hmm, How can I see the content of those "??"......
>
> (gdb)b Objecter.cc:635
> ... ...
> (gdb) bt
> #0 0x00007ff2d4190d60 in ?? () from /usr/local/lib/librados.so.2
> ^^^^
> #1 0x00007ff2d4193c4b in ?? () from /usr/local/lib/librados.so.2
> ^^^^
> #2 0x00007ff2d4157d9e in librados::RadosClient::write (this=<value
> optimized out>, io=@0x7ff2cc0030a0, oid=@0x7fff237d97d0,
> bl=@0x7fff237d9840, len=512,
> off=3072) at osdc/Objecter.h:805
> #3 0x00007ff2d41580fa in librados::IoCtx::write (this=0x7ff2cc0028f0,
> oid=<value optimized out>, bl=@0x7fff237d9840, len=512, off=3072) at
> librados.cc:2278
> #4 0x00007ff2d44e1ca8 in librbd::write (ictx=0x7ff2cc002800,
> off=3072, len=<value optimized out>,
> buf=0x7fff237d9980
> "KHVvrQTdx;I>mJ(9S\"&M6+KBac1E6<Q^a)WUW-;RGcm5-tM`sP/*XWK<:Z^Ou1.X9d-ppGB8*1L7(vvzH%&#ZO<s+yC\"*PWB4c2&,S;3dfIi\\?e'Bi'y:@nD91CB^yaq^swgF4y*xErVaZZ%C^}\\{l}6|BU]=9Px,GaOY\\YS!M)b)adIAb%?P$RLC*)]@YWI}:wVtR+t"...)
> at librbd.cc:1191
> #5 0x0000000000401e95 in write_test_data (image=0x7ff2cc002800,
> test_data=0x7fff237d9980
> "KHVvrQTdx;I>mJ(9S\"&M6+KBac1E6<Q^a)WUW-;RGcm5-tM`sP/*XWK<:Z^Ou1.X9d-ppGB8*1L7(vvzH%&#ZO<s+yC\"*PWB4c2&,S;3dfIi\\?e'Bi'y:@nD91CB^yaq^swgF4y*xErVaZZ%C^}\\{l}6|BU]=9Px,GaOY\\YS!M)b)adIAb%?P$RLC*)]@YWI}:wVtR+t"...,
> off=3072, len=512) at testlibrbd.c:189
> #6 0x00000000004021bc in test_io (io=0x606b20, image=0x7ff2cc002800)
> at testlibrbd.c:250
> #7 0x0000000000402e2b in main (argc=1, argv=0x7fff237d9cd8) at
> testlibrbd.c:415
>
>
> Thx!
> Simon
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