There’s a memory leak in gluster 3.12.9 - 3.12.12 on fuse mounted volumes, sounds like what you’re seeing.

The fix is in 3.12.13, which should be showing up today or tomorrow in the centos repos (currently available from the testing repo). I’ve been running it overnight on one host to test, looks like they got it.

From: Cole Johnson <sizzlinsaguaro@gmail.com>
Subject: [ovirt-users] Weird Memory Leak Issue
Date: August 29, 2018 at 9:35:39 AM CDT
To: users@ovirt.org

Hello,
I have a hyperconverged, self hosted ovirt cluster with three hosts,
running 4 VM's.  The hosts are running the latest ovirt node.  The
VM's are Linux, Windows server 2016, and Windows Server 2008r2.  The
problem is with any host running the 2008r2 VM will run out of memory
after 8-10 hours, causing any VM on the host to be paused, and making
to host all but unresponsive. This problem seems to only exist with
this specific VM.  None of the other running VM's have this problem.
I can resolve the problem by migrating the VM to a different host,
then putting the host into maintenance mode, the activating it back.
The leak appears to be in glusterfsd.  Is there anything I can do to
permanently fix this?
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