27138336179
79%

Ran 08 Jun 2026 12:42PM UTC

Jobs 1

Files 36

Run time 1min

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Committed 08 Jun 2026 12:33PM UTC coverage: 78.996%. Remained the same

Build # 27138336179

Build Type

push

github

Committed by

web-flow

Commit Message

xapi_pci: Disallow passthrough for boot devices (#7113)

It is currently possible to accidentally pass through a PCI device
backing the boot drive, making the system unbootable and requiring
manual intervention (since dom0 will no longer be able to access the PCI
device).

Fix this at least for the drive behind '/', refusing to pass through its
PCI device.

As an example, for `00:1f.2` SATA controller behind '/':

    $ /usr/bin/findmnt -no source /
    /dev/sda1
    $ udevadm info -q path -n /dev/sda1

/devices/pci0000:00/0000:00:1f.2/ata5/host4/target4:0:0/4:0:0:0/block/sda/sda1

Disabling dom0 access before this commit:

    $ xe pci-disable-dom0-access uuid=$UUID
    disable_on_reboot
    $ /opt/xensource/libexec/xen-cmdline --get-dom0 xen-pciback.hide
    xen-pciback.hide=(0000:00:1f.2)

After:

    $ xe pci-disable-dom0-access uuid=$UUID
    Passing through a PCI device backing a boot disk is disallowed
    device: /dev/sda1
    $ /opt/xensource/libexec/xen-cmdline --get-dom0 xen-pciback.hide
    <empty>

Coverage Stats

3667 of 4642 relevant lines covered (79.0%)

0.79 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
1	python3.11 - 27138336179.1	08 Jun 2026 12:42PM UTC	36	79.0	GitHub Action Run

xapi-project / xen-api / 27138336179
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