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root@mds1:~# stat /core
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File: `/core'
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Size: 555253760 Blocks: 674464 IO Block: 4096 regular file
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Device: 801h/2049d Inode: 664 Links: 1
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Access: (0600/-rw-------) Uid: ( 0/ root) Gid: ( 0/ root)
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Access: 2010-06-03 13:05:22.126414913 +0200
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Modify: 2010-06-03 12:58:16.187665088 +0200
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Change: 2010-06-03 12:58:16.187665088 +0200
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root@mds1:~#
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root@mds1:~# gdb /usr/lib/debug/usr/bin/cmds /core
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GNU gdb (GDB) 7.1-ubuntu
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Copyright (C) 2010 Free Software Foundation, Inc.
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License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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This is free software: you are free to change and redistribute it.
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There is NO WARRANTY, to the extent permitted by law. Type "show copying"
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and "show warranty" for details.
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This GDB was configured as "x86_64-linux-gnu".
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For bug reporting instructions, please see:
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<http://www.gnu.org/software/gdb/bugs/>...
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Reading symbols from /usr/lib/debug/usr/bin/cmds...done.
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[New Thread 9178]
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[New Thread 9243]
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[New Thread 9244]
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[New Thread 9179]
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[New Thread 9246]
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[New Thread 9186]
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[New Thread 9247]
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[New Thread 9187]
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[New Thread 9253]
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[New Thread 9231]
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[New Thread 9252]
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[New Thread 9255]
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[New Thread 9254]
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[New Thread 9256]
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[New Thread 9257]
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[New Thread 9258]
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[New Thread 9322]
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[New Thread 9176]
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[New Thread 9259]
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[New Thread 9250]
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[New Thread 9251]
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[New Thread 9323]
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[New Thread 9173]
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warning: Unable to find dynamic linker breakpoint function.
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GDB will be unable to debug shared library initializers
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and track explicitly loaded dynamic code.
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Core was generated by `/usr/bin/cmds -i 1 -c /etc/ceph/ceph.conf'.
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Program terminated with signal 11, Segmentation fault.
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#0 0x00000000012418a0 in ?? ()
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(gdb) bt
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#0 0x00000000012418a0 in ?? ()
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#1 0x0000000000510ba3 in MDSCacheObject::put (this=0xd3ca40, mdr=0x1f3bfa0) at mds/mdstypes.h:1209
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#2 Mutation::drop_pins (this=0xd3ca40, mdr=0x1f3bfa0) at mds/MDCache.h:148
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#3 MDCache::request_cleanup (this=0xd3ca40, mdr=0x1f3bfa0) at mds/MDCache.cc:6545
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#4 0x0000000001f3bfa0 in ?? ()
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#5 0x0000000000d30f90 in ?? ()
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#6 0x0000000000d38ef0 in ?? ()
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#7 0x0000000001f3bfa0 in ?? ()
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#8 0x0000000000000000 in ?? ()
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(gdb)
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