Why is this feature desired for RHEL?

RHV 4.4 should be using RHEL Advanced Virtualization 8.2.0 which has qemu-4.2.0 and not RHEL 8.2.0

This is meant for guests, not virtualization hosts. The feature is already in RHEL-AV and Windows build because those were rebased. It is still missing from RHEL8 and RHEL7 guests though.

Fair enough, then please be more specific as to which versions you desire this to be backported to and why.

qemu-kvm-2.12 was used for RHEL 8.0 -> 8.2 as well as qemu-kvm-rhev in RHEL 7.x; however, adding to more than 8.2.1 and 7.9.0 requires z-streams and it's not clear how "important" this really is.

IMO it's not a critical feature. I was hoping for 8.3 only but if 8.2.1 or 7.9 is not a problem then that would make us only happier.

Ryan, what do you think?

As long as the rebase happens (bug 1810193), then RHEL 8.3 will pick up the change via the RHEL AV 8.2.0 merge. So I added a depends on for that, set the prio to medium, assigned to Marc-Andre, but left the bug in NEW for now. Once that rebase is merged downstream, then we can move this bug along through the process. If for some reason the rebase doesn't happen, then the commit could be backported into 8.3.0

Backports to earlier versions are tricky and I think would require Martin Tessun to provide an opinion. For RHEL 8.2, AIUI, we don't provide qemu-kvm content to the RHEL 8.*.1 streams - preferring of course to have RHEL AV 8.*.* used instead. The current 7.9 plan doesn't have a RHV release consuming qemu-kvm-rhev, so the best that could be done is add to qemu-kvm 7.9, but I'm not sure that even makes sense especially if not in qemu-kvm-rhev.  Suffice to say it's complicated.

Moving to POST to follow convention of other bz's in POST as part of the rebase

Test with qemu-guest-agent-5.0.0-0.module+el8.3.0+6620+5d5e1420.x86_64.rpm, can report file system usage statistics.

{"execute": "guest-get-fsinfo"}
{"return": [{"name": "sda1", "total-bytes": 1063256064, "mountpoint": "/boot", "disk": [{"serial": "0QEMU_QEMU_HARDDISK_GAGENT_TEST", "bus-type": "scsi", "bus": 0, "unit": 0, "pci-controller": {"bus": 5, "slot": 0, "domain": 0, "function": 0}, "dev": "/dev/sda1", "target": 0}], "used-bytes": 281026560, "type": "xfs"}, {"name": "dm-0", "total-bytes": 18238930944, "mountpoint": "/", "disk": [{"serial": "0QEMU_QEMU_HARDDISK_GAGENT_TEST", "bus-type": "scsi", "bus": 0, "unit": 0, "pci-controller": {"bus": 5, "slot": 0, "domain": 0, "function": 0}, "dev": "/dev/sda2", "target": 0}], "used-bytes": 5004173312, "type": "xfs"}]}

Moving to ON_QA since fix was included as part of qemu-4.2 rebase for bug 1783250

Test pkg for rhel8.2.0, there is no file system usage statistics.
qemu-guest-agent-2.12.0-99.module+el8.2.0+6870+55b789b4.2.x86_64.rpm

2020-07-15 02:29:36: {"execute": "guest-get-fsinfo"}
2020-07-15 02:29:36: {"return": [{"name": "vda1", "mountpoint": "/boot", "disk": [{"serial": "GAGENT_TEST", "bus-type": "virtio", "bus": 0, "unit": 0, "pci-controller": {"bus": 5, "slot": 0, "domain": 0, "function": 0}, "dev": "/dev/vda1", "target": 0}], "type": "xfs"}, {"name": "dm-0", "mountpoint": "/", "disk": [{"serial": "GAGENT_TEST", "bus-type": "virtio", "bus": 0, "unit": 0, "pci-controller": {"bus": 5, "slot": 0, "domain": 0, "function": 0}, "dev": "/dev/vda2", "target": 0}], "type": "xfs"}]}

Test for rhel8.3.0, report file system usage statistics.
qemu-guest-agent-4.2.0-30.module+el8.3.0+7298+c26a06b8.x86_64.rpm

2020-07-14 23:57:00: {"execute": "guest-get-fsinfo"}
2020-07-14 23:57:00: {"return": [{"name": "vda1", "total-bytes": 1063256064, "mountpoint": "/boot", "disk": [{"serial": "GAGENT_TEST", "bus-type": "virtio", "bus": 0, "unit": 0, "pci-controller": {"bus": 5, "slot": 0, "domain": 0, "function": 0}, "dev": "/dev/vda1", "target": 0}], "used-bytes": 258514944, "type": "xfs"}, {"name": "dm-0", "total-bytes": 18238930944, "mountpoint": "/", "disk": [{"serial": "GAGENT_TEST", "bus-type": "virtio", "bus": 0, "unit": 0, "pci-controller": {"bus": 5, "slot": 0, "domain": 0, "function": 0}, "dev": "/dev/vda2", "target": 0}], "used-bytes": 4569296896, "type": "xfs"}]}

So verify this bug.

https://polarion.engineering.redhat.com/polarion/#/project/RedHatEnterpriseLinux7/workitem?id=RHEL7-100545