The solution can be found here.
https://ceph.io/en/news/blog/2020/automatic-cephfs-recovery-after-blacklisting/
When a session eviction occurs on the client side and then the recovery is
performed, the client's caps and dirty data are dropped and the server also
releases the client's caps, so
Hi,
CephFS is provided as a shared file system service in a private cloud
environment of our company, LINE. The number of sessions is approximately more
than 5,000, and session evictions occur several times a day. When session
eviction occurs, the message 'Cannot send after transport endpoint
