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This bug has been copied from bug #1540538 and has been proposed to be backported to 7.4 z-stream (EUS).

Can you consider this revised text for the "Doc Text"?

If journald rotates the internal log files quickly enough, and an application
using the sd_journal API did not read messages fast enough, the API could start
losing notifications about deleted internal log files.  Consequently, the
sd_journal API would not know to close file descriptors for such files,
preventing them from being removed from the disk by the kernel.

To fix this problem, the sd_journal API now re-iterates through internal log
files, finds those that were removed and closes their file descriptors, allowing
the kernel to remove the files completely from the disk.

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-2018:0416