DLPX-65491 Invalid argument when mounting ZFS filesystem

files/common/lib/sysctl.d/50-override.conf

@@ -71,3 +71,19 @@ net.ipv4.tcp_rmem = 4096 4194304 16777216
 # allows the script that generates the hprof dump to run.
 #
 vm.overcommit_memory = 1
+
+#
+# By default all mounts are "shared" with other mount peer groups.
+# As a results any new mount will propagate the mount event to other
+# mount namespaces that is part of that peer group. This means that the
+# counts associated with a mount namespace may be higher than the number
+# of actual mounts in the initial namespace. We have observed that
+# systemd-resolved and systemd-networkd have twice the number of mounts
+# compared to the initial mount namespace. Additionally, as we create
+# containers systemd-resolved and systemd-networkd will add the mounts
+# from the initial namespace again. This can lead to an inflation of
+# 3 times what is actually mounted. In order to be able to support
+# 100,000 filesystems in the initial namespace the maximum number of
+# mounts allowed by the system must be 3 times the supported value.
+#
+fs.mount-max = 300000