The name of the volume of a node, and the bus of a file-backed disk, could come from a
match made by a routine on the call path. A riscv64 node breaks on it: a leaked value
that is neither scsi nor virtio gives the node an hd* volume, and the riscv64 virt
machine has no IDE controller for that disk.
createstorage and build_diskstruct in xCAT-server/lib/xcat/plugins/kvm.pm read the model
of the disk out of the vmstorage value with s/=(.*)//, then read $1. The substitution is
allowed to fail, because most vmstorage values state no model, and a failed match leaves
$1 as the last successful capture. dohyp gives every node the storage model scsi before
mkvm runs, and a captured value takes priority over it, so a leaked value can only
replace the default that keeps a riscv64 node on sd*.
The leak follows the call path, not the history of the process. Perl restores $1 when the
block that set it ends, so a match made in a routine that has returned cannot reach
createstorage; only a match still live in an enclosing block can, and a later successful
match without a group empties $1 again. A long-running xcatd is not what makes this
happen, and looking for one is a wrong turn.
Both routines now read $1 only when their own substitution matches. A vmstorage value
that states a model, and vmstoragemodel, name the volume as before.
The default itself moves into default_storagemodel, which dohyp calls, so a test can hold
it. It sat inline with a comment, and changing it to ide left every assertion passing.
kvm_createstorage_model.t runs each node twice, once with a capture left live in the
calling block, because a case that leaves $1 empty passes against the defect. Five of its
eleven assertions fail without this change, and a sixth fails if the default changes.
Signed-off-by: Daniel Hilst <392820+dhilst@users.noreply.github.com>
A node whose vmstorage is a libvirt storage pool (dir://, nfs:// or lvm://) got a <disk>
element with no bus attribute. libvirt then chose the controller from the name of the
device alone, so the disk of a riscv64 node worked only while its volume was named sd*.
build_diskstruct in xCAT-server/lib/xcat/plugins/kvm.pm matched the pool entry, a hash
reference, against /^vd/, /^hd/ and /^sd/. A reference in a match is its address as a
string, so no branch ran and the bus was never set. The name of the device is in the
device field of that entry.
The three tests now read that field. The bus each one sets is the bus libvirt gives an
hd*, sd* or vd* name, so no domain changes: a riscv64 node keeps the sd* name its volume
has, and keeps the scsi controller the riscv64 virt machine provides. libvirt stores the
domain built before this change with bus="scsi" on that disk, which is what the domain
built after it states.
kvm_diskstruct_bus.t drives build_diskstruct in a scratch package, with a stub storage
pool in place of the one routine that reaches libvirt, and asserts the bus of an hd*, an
sd* and a vd* volume. It also asserts that a riscv64 node keeps the sd* name of its
volume. Four of its seven assertions fail without this change.
Signed-off-by: Daniel Hilst <392820+dhilst@users.noreply.github.com>
A node with arch=riscv64 got an x86_64 libvirt domain from mkvm. The node took a
DHCP lease, received the riscv64 GRUB binary that nodeset staged, and could not run
it. The firmware fell through to the empty disk and stopped, so both flat
provisioning cases of the riscv64 cell failed with a node that never installed.
build_xmldesc and build_diskstruct in xCAT-server/lib/xcat/plugins/kvm.pm read the
architecture from the hypervisor cpumodel. The arch of the node was never read while
the domain XML was built, so on an x86_64 hypervisor every guest was an x86_64
guest, whatever the node said.
guest_arch_profile now takes the arch of the node as well, and returns the domain
type, the <os> arch and machine, the firmware and the device settings that follow
from them. A riscv64 node becomes a qemu domain with the virt machine type and UEFI
firmware. It drops the parts the riscv64 virt machine has no controller for, or that
libvirt refuses there: the pae, acpi and apic features, the SeaBIOS serial option,
the ich6 sound card, the USB tablet, and the ide disk and hd* optical drive. libvirt
resolves the emulator and the UEFI firmware files itself. POWER and x86_64 domains
do not change.
kvm_guest_arch.t drives build_xmldesc and build_diskstruct in a scratch package,
stubbing only the routines that reach libvirt or the xCAT database, and asserts the
domain and the disks of each architecture. Ten of its twenty assertions fail without
this change.
Signed-off-by: Daniel Hilst <392820+dhilst@users.noreply.github.com>
(cherry picked from commit 8d149c856302c8016fb0ead31e9859fd5a1e9dff)
build_xmldesc only recognised cpumodel "ppc64" (big-endian) when deciding to set
<os type arch='ppc64' machine='pseries'>, but ppc64le hosts report cpumodel
"ppc64le" (virNodeGetInfo model). A guest on a ppc64le hypervisor was therefore
emitted as an x86-style domain -- no machine type and with pae/acpi/apic -- and
libvirt rejected it: "machine type 'pseries-*' does not support ACPI".
Recognise "ppc64le" alongside "ppc64" for the arch/machine block, and omit the
x86-only pae/acpi/apic features on both. Little- and big-endian pseries guests
both use libvirt <os> arch "ppc64".
Signed-off-by: Daniel Hilst <392820+dhilst@users.noreply.github.com>
ac97 audio support has been removed from QEMU.
For example in RHEL 9.1 (qemu-kvm-7.0.0), creating new VMs fail
to start with the following error:
'AC97' is not a valid device model name.
See: https://bugzilla.redhat.com/show_bug.cgi?id=1995819
Daniel Hilst
Markus Hilger
Markus Hilger
Wai Yee Wong
Stephane Thiell
besawn
Mark Gurevich
Markus Hilger
GONG Jie
XuWei
Yuan Bai
yangsong
Casandra Qiu
ertaozh
Victor Hu
immarvin