The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.
If a snapshot is deleted and the parent directory is
fsynced, the log cannot be replayed during
the next mount operation, which prevents the file system from
mounting. This issue is solvable by wiping the log trees with
the btrfs-zero-log tool, but this method is
very inconvenient, as it results in the loss of any data and
metadata that was fsynced before the parent
directory was fsynced. (Bug ID 24424719)