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feat(instances): PCI devices of the host given to a shut-off VM

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- The Host devices tab gives a shut-off VM a PCI device of its host and
  takes it back; libvirt binds the device to vfio-pci when the VM starts
  and gives it back when it stops (managed). The VM's PCI devices are
  listed with whether the running VM and its next start have them.
- A device is offered, and accepted on the server under the compute's
  claim, only when it is no bridge of any kind (bridge header, PCIe port,
  or of the bridge class: host bridge, LPC), the host has none of its own
  network interfaces, disks or graphics card on it (else: bind it to
  vfio-pci on the host first), no other VM names it, and every other
  endpoint of its IOMMU group is the VM's too or has no driver or
  vfio-pci and no other VM; bridges in the group stay with pcieport, and
  a member that cannot be read keeps the group. Nothing in the group is
  taken implicitly.
- A snapshot revert checks the PCI devices of the snapshot with the same
  rules; migration and clones already leave host devices out.
- The add forms of the tab load together, when the tab opens.
This commit is contained in:
catborise 2026-10-29 13:45:27 +03:00
parent ac8ff62e7e
commit 80dd145bcf
19 changed files with 509 additions and 103 deletions
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16
instances/templates/instance.html
View file

@ -428,19 +428,19 @@
});
</script>
<script>
// the Host devices tab's add form: loaded once, when the tab first opens
var hostUsb = document.getElementById("host-usb");
if (hostUsb) {
// the Host devices tab's add forms: loaded once, when the tab first opens
var hostDevices = document.getElementById("host-devices");
if (hostDevices) {
document.querySelector('[data-bs-target="#hostdevs"]').addEventListener("shown.bs.tab", function () {
if (hostUsb.dataset.loaded) return;
hostUsb.dataset.loaded = "true";
fetch(hostUsb.dataset.url).then(function (response) {
if (hostDevices.dataset.loaded) return;
hostDevices.dataset.loaded = "true";
fetch(hostDevices.dataset.url).then(function (response) {
if (!response.ok) throw new Error(response.statusText);
return response.text();
}).then(function (html) {
hostUsb.innerHTML = html;
hostDevices.innerHTML = html;
}).catch(function () {
hostUsb.textContent = "{{ _("The host's USB devices could not be read.")|escapejs }}";
hostDevices.textContent = "{{ _("The host's devices could not be read.")|escapejs }}";
});
});
}