Description of problem: Observed MDS failover when dumping cache using admin-daemon command. command used: "ceph --admin-daemon ceph-mds.magna083.asok dump cache" Command was hung for sometime and observed failover in cluster status. Command not exited. Log: faildover mds log available in magna002 path "/home/rperiyas/fs_4thoct" Version-Release number of selected component (if applicable): ceph version 12.2.5-42.el7cp How reproducible: 1/1 Steps to Reproduce: 1. Configured FS with 2 active and 1 standby 2. Mounted fuse and kernel and started smalfile and crefi IO on different dir 3. During IO's try to dump the cache using admin-daemon command. Actual results: MDS failover and dump cache command hung Expected results: There should not be a failover Additional info: When tried to perform the same active in another MDS, there was no failover of MDS and observed dump cache command output.
*** Bug 1622243 has been marked as a duplicate of this bug. ***
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2019:0475