Kclient: failed to umount
I was trying to do mount on kernel client ,IOs and umount(automated script). While umounting, umount command: sudo umount mounting_dir -l and command was hung.
Output on machine:
Message from syslogd@localhost at Mar 20 02:05:56 ...
kernel:NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [umount:741]
Ceph version(Downstream): ceph version 12.2.4-4.el7cp (bfc2b497ab362f2b3afa7bd1f9d0053f74b60d66) luminous (stable)