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
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.
MDS failover and dump cache command hung
There should not be a failover
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.