Hello,

Three OSD daemons crash at the same time while processing the same
object located in an rbd ec4+2 pool leaving a placement group in
inactive down state. Soon after I start the osd daemons back up they
crash again choking on the same object.

----------------------------8<------------------------------------
_dump_onode 0x5605a27ca000
4#7:8565da11:::rbd_data.6.a8a8356fd674f.00000000003dce34:head# nid
1889617 size 0x100000 (1048576) expected_object_size 0
expected_write_size 0 in 8 shards, 32768 spanning blobs
----------------------------8<------------------------------------

Please take a look at the attached log file.


Ceph status reports:

Reduced data availability: 1 pg inactive, 1 pg down


Any hints on how to get this placement group back online would be
greatly appreciated.


Milan


-- 
Milan Kupcevic
Senior Cyberinfrastructure Engineer at Project NESE
Harvard University
FAS Research Computing
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