Ceph

scripts to reproduce:

#!/bin/sh

pool=rbd
obj=object2
function set_size() {
        local osd=$1
        ./bin/ceph osd set noout
        ./bin/init-ceph stop osd.$osd
        dd if=/dev/urandom bs=10 count=1 of=CORRUPT
        ./bin/ceph-objectstore-tool --data-path dev/osd$osd $obj set-bytes CORRUPT || return 1
        ./bin/init-ceph start osd.$osd
        ./bin/ceph tell osd.$osd injectargs '--debug_osd 20'
        ./bin/ceph osd unset noout
        ./bin/rados -p $pool get $obj /tmp/copy
        diff /tmp/copy /tmp/9461760 || echo "Content not consistent" 
}

function create_cluster() {
        ../src/vstart.sh -X -n --mon_num 1 --osd_num 4 --mds_num 0
        ./bin/ceph osd erasure-code-profile set huangjun k=3 m=1
        ./bin/ceph osd pool create $pool 1 1 erasure huangjun
        ./bin/ceph osd pool set $pool allow_ec_overwrites true
        dd if=/dev/zero of=/tmp/9461760 bs=1K count=947
        truncate -s 9461760 /tmp/9461760
        ./bin/rados -p $pool put $obj /tmp/9461760
}

create_cluster
sed -i 's/bluestore fsck on mount = true/bluestore fsck on mount = false/g' ceph.conf
./bin/ceph tell osd.* injectargs '--debug_osd 20'
set_size 1
set_size 0

     0> 2017-10-12 12:20:30.127026 7fc9bf8d4700 -1 /usr/src/ceph/src/osd/ECUtil.cc: In function 'int ECUtil::decode(const ECUtil::stripe_info_t&, ceph::ErasureCodeInterfaceRef&, std
::map<int, ceph::buffer::list>&, ceph::bufferlist*)' thread 7fc9bf8d4700 time 2017-10-12 12:20:30.118682
/usr/src/ceph/src/osd/ECUtil.cc: 16: FAILED assert(total_data_size % sinfo.get_chunk_size() == 0)

 ceph version 13.0.0-1208-g3d90ec5 (3d90ec5a4d6a29e4f2fea8fbc8abc532bc0801de) mimic (dev)
 1: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x110) [0x7fc9dc5bcdb0]
 2: (ECUtil::decode(ECUtil::stripe_info_t const&, std::shared_ptr<ceph::ErasureCodeInterface>&, std::map<int, ceph::buffer::list, std::less<int>, std::allocator<std::pair<int const,
 ceph::buffer::list> > >&, ceph::buffer::list*)+0x3f8) [0x7fc9dc35d608]
 3: (CallClientContexts::finish(std::pair<RecoveryMessages*, ECBackend::read_result_t&>&)+0x289) [0x7fc9dc352e79]
 4: (ECBackend::complete_read_op(ECBackend::ReadOp&, RecoveryMessages*)+0x7f) [0x7fc9dc329eaf]
 5: (ECBackend::handle_sub_read_reply(pg_shard_t, ECSubReadReply&, RecoveryMessages*, ZTracer::Trace const&)+0x1028) [0x7fc9dc331638]
 6: (ECBackend::_handle_message(boost::intrusive_ptr<OpRequest>)+0x1af) [0x7fc9dc33b7bf]
 7: (PGBackend::handle_message(boost::intrusive_ptr<OpRequest>)+0x50) [0x7fc9dc249d40]
 8: (PrimaryLogPG::do_request(boost::intrusive_ptr<OpRequest>&, ThreadPool::TPHandle&)+0x5ae) [0x7fc9dc1b8d1e]
 9: (OSD::dequeue_op(boost::intrusive_ptr<PG>, boost::intrusive_ptr<OpRequest>, ThreadPool::TPHandle&)+0x3f9) [0x7fc9dc056cb9]
 10: (PGQueueable::RunVis::operator()(boost::intrusive_ptr<OpRequest> const&)+0x57) [0x7fc9dc2b4e17]
 11: (OSD::ShardedOpWQ::_process(unsigned int, ceph::heartbeat_handle_d*)+0x1167) [0x7fc9dc0811e7]
 12: (ShardedThreadPool::shardedthreadpool_worker(unsigned int)+0x839) [0x7fc9dc5c28c9]
 13: (ShardedThreadPool::WorkThreadSharded::entry()+0x10) [0x7fc9dc5c4860]
 14: (()+0x7dc5) [0x7fc9d93a1dc5]
 15: (clone()+0x6d) [0x7fc9d849573d]