Virtiofs 'too many open files' errors with rsync and du commands

Issue

• Using virtiofs results in 'too many open files' errors during rsync and du commands.
• Error occurs on RHEL 9.6 VM setup with KVM hypervisor, RHEL 9.6 guest, and virtiofs mount between them.
• File-max limit on the host is set to the maximum value, but rsync and du commands still fail.
• rsync command ends with 'too many open files' error.
• Running 'du' on virtiofs mount point also fails with 'too many open files' error.
• Both commands complete without error on the source directory on the guest root partition.