I upgraded from giant to hammer yesterday and now 'ceph -w' is constantly repeating this message:
2015-04-09 08:50:26.318042 7f95dbf86700 0 -- 10.5.38.1:0/2037478 >> 10.5.38.1:6789/0 pipe(0x7f95e00256e0 sd=3 :39489 s=1 pgs=0 cs=0 l=1 c=0x7f95e0023670).connect protocol feature mismatch, my 3fffffffffff < peer 13fffffffffff missing 1000000000000
It isn't always the same IP for the destination - here's another:
2015-04-09 08:50:20.322059 7f95dc087700 0 -- 10.5.38.1:0/2037478 >> 10.5.38.8:6789/0 pipe(0x7f95e00262f0 sd=3 :54047 s=1 pgs=0 cs=0 l=1 c=0x7f95e002b480).connect protocol feature mismatch, my 3fffffffffff < peer 13fffffffffff missing 1000000000000
Some details about our install:
We have 24 hosts with 18 OSDs each. 16 per host are spinning disks in an erasure coded pool (k=8 m=4). 2 OSDs per host are SSD partitions used for a caching tier in front of the EC pool. All 24 hosts are monitors. 4 hosts are mds. We are running cephfs with a client trying to write data over cephfs when we're seeing these messages.
Any ideas?
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