Recurring OSD crash on bluestore

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Hi,

One of the OSDs in my bluestore-enabled ceph cluster (on 11.2.0) started crashing. I uploaded a log at https://up.lae.is/p/1492018430-6d126.txt (was too large to attach). It looks like there's a failed assert before the abort but I couldn't tell what was attempting to be asserted. I tried stracing it and found the following:

167856 18:30:44 write(2, "/build/ceph-11.2.0/src/os/bluestore/BlueStore.cc: In function 'virtual int BlueStore::read(ObjectStore::CollectionHandle&, const ghobject_t&, uint64_t, size_t, ceph::bufferlist&, uint32_t, bool)' thread 7f6e04b33700 time 2017-04-12 18:30:44.209358\n/build/ceph-11.2.0/src/os/bluestore/BlueStore.cc: 4967: FAILED assert(allow_eio || r != -5)\n", 340 <unfinished ...>

Is this a bug and if not, what can I do to resolve this? (hardware issue?)

lae

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