I have this on a cephfs client, I had ceph common on 12.2.11, and
upgraded to 12.2.12 while having this error. They are writing here [0]
you need to upgrade kernel and it is fixed in 12.2.2????
[@~]# uname -a
Linux mail03 3.10.0-957.5.1.el7.x86_6
[Tue May 21 11:23:26 2019] libceph: mon2 192.168.10.113:6789 session
established
[Tue May 21 11:23:26 2019] libceph: mon2 192.168.10.113:6789 io error
[Tue May 21 11:23:26 2019] libceph: mon2 192.168.10.113:6789 session
lost, hunting for new mon
[Tue May 21 11:23:26 2019] libceph: mon0 192.168.10.111:6789 session
established
[Tue May 21 11:23:26 2019] libceph: mon0 192.168.10.111:6789 io error
[Tue May 21 11:23:26 2019] libceph: mon0 192.168.10.111:6789 session
lost, hunting for new mon
[Tue May 21 11:23:26 2019] libceph: mon1 192.168.10.112:6789 session
established
[Tue May 21 11:23:26 2019] libceph: mon1 192.168.10.112:6789
[Tue May 21 11:23:26 2019] libceph: mon1 192.168.10.112:6789 session
lost, hunting for new mon
[Tue May 21 11:23:26 2019] libceph: mon2 192.168.10.113:6789 session
established
ceph version
ceph version 12.2.12 (1436006594665279fe734b4c15d7e08c13ebd777) luminous
(stable)
[0]
https://www.mail-archive.com/ceph-users@lists.ceph.com/msg52177.html
https://tracker.ceph.com/issues/23537
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