Ceph » CephFS

Reported by the QE team at https://bugzilla.redhat.com/show_bug.cgi?id=2275459

2024-04-17T07:26:33.666+0000 7fa0a7c0b640 10 quiesce.mgr.44189 <sanitize_roots> Normalized root '/volumes/_nogroup/sv_def_6/c37e6c79-a83a-4b1d-96e8-16584f440626' to 'file:/volumes/_nogroup/sv_def_6/c37e6c79-a83a-4b1d-96e8-16584f440626'
...
2024-04-17T07:26:33.666+0000 7fa0a840c640 10 quiesce.mds.0 <operator()> submit_request: value:file:/volumes/_nogroup/sv_def_6/c37e6c79-a83a-4b1d-96e8-16584f440626
2024-04-17T07:26:33.667+0000 7fa0a840c640 10 quiesce.agt <agent_thread_main> got request handle < mds.0:3431> for 'file:/volumes/_nogroup/sv_def_6/c37e6c79-a83a-4b1d-96e8-16584f440626'
...
2024-04-17T07:26:33.669+0000 7fa0a840c640 10 quiesce.mds.0 <operator()> submit_request: value:file:/volumes/_nogroup/sv_def_6/c37e6c79-a83a-4b1d-96e8-16584f440626
...
2024-04-17T07:26:33.670+0000 7fa0a840c640 10 quiesce.agt <agent_thread_main> got request handle < mds.0:3437> for 'file:/volumes/_nogroup/sv_def_6/c37e6c79-a83a-4b1d-96e8-16584f440626'
...
2024-04-17T07:26:33.674+0000 7fa0a7c0b640  5 quiesce.mgr.44189 <leader_upkeep_set> [cg_test1_p00@106,file:/volumes/_nogroup/sv_def_6/c37e6c79-a83a-4b1d-96e8-16584f440626] reported by at least one peer as: QS_FAILED (6)

This problem is due to a race condition that appears when multiple db updates are posted to the agent rapidly.
When new roots begin processing but don't yet make it into the currently tracked set, there is a window for the next update with the same roots to treat them as new.