Ceph

If this is going to take some time can we back out the test (...or the plugin? :/) so that any new errors in i386 are immediately visible? Red lines are bad for our quality and detection abilities.

And just in case anybody else tries searching for it with the same string I did:, this is failing the qa/workunits/erasure-code/encode-decode-non-regression.sh script.

Fail for 6/3/2 and 9/4/2 only

• valgrind is happy
• the bug disapear when adding print statements in some places
• the bug disapear when the code is not optimized and shows up when the code is -O2 or -O3
• the bug stays when running gdb but introspection is not possible because all variables are optimized out

With non optimized code on i386 (or on amd64):

ceph_erasure_code_non_regression --check --debug-osd=20 --stripe-width 4096 --plugin shec --para\
meter technique=multiple --parameter k=6 --parameter m=3 --parameter c=2 true --base ../ceph-erasure-code-corpus/v0.92-988
2015-09-21 13:26:34.176415 b606f700 10 ErasureCodePluginSelectShec: load: shec_generic
2015-09-21 13:26:34.176438 b606f700 10 ErasureCodePluginSelectShec: generic plugin
2015-09-21 13:26:34.176472 b606f700 10 ErasureCodeShec: (k, m, c) set to (6, 3, 2)
2015-09-21 13:26:34.176483 b606f700 10 ErasureCodeShec: w default to 8
2015-09-21 13:26:34.176501 b606f700 10 ErasureCodeShec: [ cache tables ] creating coeff for k=6 m=3 c=2 w=8
2015-09-21 13:26:34.176542 b606f700 10 ErasureCodeShec: matrix =
2015-09-21 13:26:34.176543 b606f700 10 ErasureCodeShec: 111111
2015-09-21 13:26:34.176544 b606f700 10 ErasureCodeShec: 111000
2015-09-21 13:26:34.176545 b606f700 10 ErasureCodeShec: 000111
2015-09-21 13:26:34.176545 b606f700 10 ErasureCodeShec:  [ technique ] = multiple
2015-09-21 13:26:34.176547 b606f700 10 ErasureCodePluginShec: ErasureCodePluginShec: factory() completed
2015-09-21 13:26:34.176846 b606f700 20 ErasureCodeShecTableCache: [ get table    ] = 17600744530118
2015-09-21 13:26:34.176873 b606f700 20 ErasureCodeShecTableCache: [ put table    ] = 17600744530118
2015-09-21 13:26:34.176875 b606f700 20 ErasureCodeShecTableCache: [ store table  ] = 17600744530118
2015-09-21 13:26:34.176878 b606f700 20 ErasureCodeShecTableCache: [ cache size   ] = 1
2015-09-21 13:26:34.176894 b606f700 20 ErasureCodeShecTableCache: [ get table    ] = 5506358495420614
2015-09-21 13:26:34.176898 b606f700 20 ErasureCodeShecTableCache: [ put table    ] = 5506358495420614
2015-09-21 13:26:34.176899 b606f700 20 ErasureCodeShecTableCache: [ store table  ] = 5506358495420614
2015-09-21 13:26:34.176901 b606f700 20 ErasureCodeShecTableCache: [ cache size   ] = 2

2015-09-21 13:23:28.402536 b605a700 10 ErasureCodePluginSelectShec: load: shec_generic
2015-09-21 13:23:28.402564 b605a700 10 ErasureCodePluginSelectShec: generic plugin
2015-09-21 13:23:28.402595 b605a700 10 ErasureCodeShec: (k, m, c) set to (6, 3, 2)
2015-09-21 13:23:28.402610 b605a700 10 ErasureCodeShec: w default to 8
2015-09-21 13:23:28.402627 b605a700 10 chunk 6 encodes differently
ErasureCodeShec: [ cache tables ] creating coeff for k=6 m=3 c=2 w=8
2015-09-21 13:23:28.402665 b605a700 10 ErasureCodeShec: matrix =
2015-09-21 13:23:28.402666 b605a700 10 ErasureCodeShec: 111000
2015-09-21 13:23:28.402666 b605a700 10 ErasureCodeShec: 000111
2015-09-21 13:23:28.402667 b605a700 10 ErasureCodeShec: 111111
2015-09-21 13:23:28.402668 b605a700 10 ErasureCodeShec:  [ technique ] = multiple
2015-09-21 13:23:28.402670 b605a700 10 ErasureCodePluginShec: ErasureCodePluginShec: factory() completed