Public bug reported:
Hi,
I've just seen this on reboot - and I have to admit I'm not even entirely sure
we have to fix this as it is a conflict of config <-> system. But let me start
with first things first.
I have a system with a whole bunch of network card.
1. a four port NetXtreme BCM5719
2. a single MLX ConnectX-4 Lx
3. a two port Intel X540-AT2
The system I have is MAAS deployed, so Maas has config data for the
system describing these (I guess).
I'm using DPDK on that system which happens to sometimes means I'm
unassinging the "normal" driver and replacing it with e.g. vfio-pci for
use in userspace. That will make the card disappear from a classic
systems POV like `ip`, but it is still there in e.g. `lspci`.
Now the problem I'm seeing is after my workload reassigned two of those
devices as seen here:
$ dpdk-devbind.py --status
Network devices using DPDK-compatible driver
============================================
0000:04:00.0 'Ethernet Controller 10-Gigabit X540-AT2 1528' drv=uio_pci_generic
unused=ixgbe,vfio-pci
0000:04:00.1 'Ethernet Controller 10-Gigabit X540-AT2 1528' drv=uio_pci_generic
unused=ixgbe,vfio-pci
Network devices using kernel driver
===================================
0000:02:00.0 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=eno1 drv=tg3
unused=vfio-pci,uio_pci_generic *Active*
0000:02:00.1 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=eno2 drv=tg3
unused=vfio-pci,uio_pci_generic
0000:02:00.2 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=eno3 drv=tg3
unused=vfio-pci,uio_pci_generic
0000:02:00.3 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=eno4 drv=tg3
unused=vfio-pci,uio_pci_generic
0000:08:00.0 'MT27710 Family [ConnectX-4 Lx] 1015' if=ens1 drv=mlx5_core
unused=vfio-pci,uio_pci_generic
If I reboot the system while in that mode (and it will be assigned that way on
reboot again) it happens that formerly configured MACs are not present and
cloud init will complain.
...
[ 244.164245] cloud-init[1256]: failed run of stage init
[ 244.176231] cloud-init[1256]:
------------------------------------------------------------
[ 244.192244] cloud-init[1256]: Traceback (most recent call last):
[ 244.204241] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 384, in main_init
[ 244.216146] cloud-init[1256]: init.fetch(existing=existing)
[ 244.228220] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/stages.py", line 432, in fetch
[ 244.240199] cloud-init[1256]: return
self._get_data_source(existing=existing)
[ 244.252143] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/stages.py", line 323, in
_get_data_source
[ 244.264134] cloud-init[1256]: (ds, dsname) = sources.find_source(
[ 244.276209] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/sources/__init__.py", line 923, in
find_source
[ 244.288117] cloud-init[1256]: raise DataSourceNotFoundException(msg)
[ 244.300224] cloud-init[1256]: cloudinit.sources.DataSourceNotFoundException:
Did not find any data source, searched classes: (DataSourceMAAS)
[ 244.312144] cloud-init[1256]: During handling of the above exception,
another exception occurred:
[ 244.324119] cloud-init[1256]: Traceback (most recent call last):
[ 244.336203] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 761, in
status_wrapper
[ 244.348129] cloud-init[1256]: ret = functor(name, args)
[ 244.360201] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 406, in main_init
[ 244.372143] cloud-init[1256]:
init.apply_network_config(bring_up=bring_up_interfaces)
[ 244.384132] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/stages.py", line 908, in
apply_network_config
[ 244.396115] cloud-init[1256]:
self.distro.networking.wait_for_physdevs(netcfg)
[ 244.408110] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/distros/networking.py", line 177, in
wait_for_physdevs
[ 244.420109] cloud-init[1256]: raise RuntimeError(msg)
[ 244.432230] cloud-init[1256]: RuntimeError: Not all expected physical
devices present: {'8c:dc:d4:b3:6d:e8', '8c:dc:d4:b3:6d:e9'}
[ 244.444140] cloud-init[1256]:
------------------------------------------------------------
[ 304.197386] cloud-init[1256]: 2022-03-31 05:47:39,843 -
handlers.py[WARNING]: failed posting event: finish: init-network: SUCCESS:
searching for network datasources
There might be a related or unrelated (not sure) later crash on not finding any
datasource. But you'll see so in the logs that I'll upload.
And as I said you "might" say you configured these devices and they are not
there what are we supposed to do, but seeing the crash I wondered if there
might be a better way and wnated to bring it up for your consideration.
** Affects: cloud-init
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1967222
Title:
Some hardening for vfio devices being less fatal at reboot
Status in cloud-init:
New
Bug description:
Hi,
I've just seen this on reboot - and I have to admit I'm not even entirely
sure we have to fix this as it is a conflict of config <-> system. But let me
start with first things first.
I have a system with a whole bunch of network card.
1. a four port NetXtreme BCM5719
2. a single MLX ConnectX-4 Lx
3. a two port Intel X540-AT2
The system I have is MAAS deployed, so Maas has config data for the
system describing these (I guess).
I'm using DPDK on that system which happens to sometimes means I'm
unassinging the "normal" driver and replacing it with e.g. vfio-pci
for use in userspace. That will make the card disappear from a classic
systems POV like `ip`, but it is still there in e.g. `lspci`.
Now the problem I'm seeing is after my workload reassigned two of
those devices as seen here:
$ dpdk-devbind.py --status
Network devices using DPDK-compatible driver
============================================
0000:04:00.0 'Ethernet Controller 10-Gigabit X540-AT2 1528'
drv=uio_pci_generic unused=ixgbe,vfio-pci
0000:04:00.1 'Ethernet Controller 10-Gigabit X540-AT2 1528'
drv=uio_pci_generic unused=ixgbe,vfio-pci
Network devices using kernel driver
===================================
0000:02:00.0 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=eno1 drv=tg3
unused=vfio-pci,uio_pci_generic *Active*
0000:02:00.1 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=eno2 drv=tg3
unused=vfio-pci,uio_pci_generic
0000:02:00.2 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=eno3 drv=tg3
unused=vfio-pci,uio_pci_generic
0000:02:00.3 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=eno4 drv=tg3
unused=vfio-pci,uio_pci_generic
0000:08:00.0 'MT27710 Family [ConnectX-4 Lx] 1015' if=ens1 drv=mlx5_core
unused=vfio-pci,uio_pci_generic
If I reboot the system while in that mode (and it will be assigned that way
on reboot again) it happens that formerly configured MACs are not present and
cloud init will complain.
...
[ 244.164245] cloud-init[1256]: failed run of stage init
[ 244.176231] cloud-init[1256]:
------------------------------------------------------------
[ 244.192244] cloud-init[1256]: Traceback (most recent call last):
[ 244.204241] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 384, in main_init
[ 244.216146] cloud-init[1256]: init.fetch(existing=existing)
[ 244.228220] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/stages.py", line 432, in fetch
[ 244.240199] cloud-init[1256]: return
self._get_data_source(existing=existing)
[ 244.252143] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/stages.py", line 323, in
_get_data_source
[ 244.264134] cloud-init[1256]: (ds, dsname) = sources.find_source(
[ 244.276209] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/sources/__init__.py", line 923, in
find_source
[ 244.288117] cloud-init[1256]: raise DataSourceNotFoundException(msg)
[ 244.300224] cloud-init[1256]:
cloudinit.sources.DataSourceNotFoundException: Did not find any data source,
searched classes: (DataSourceMAAS)
[ 244.312144] cloud-init[1256]: During handling of the above exception,
another exception occurred:
[ 244.324119] cloud-init[1256]: Traceback (most recent call last):
[ 244.336203] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 761, in
status_wrapper
[ 244.348129] cloud-init[1256]: ret = functor(name, args)
[ 244.360201] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 406, in main_init
[ 244.372143] cloud-init[1256]:
init.apply_network_config(bring_up=bring_up_interfaces)
[ 244.384132] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/stages.py", line 908, in
apply_network_config
[ 244.396115] cloud-init[1256]:
self.distro.networking.wait_for_physdevs(netcfg)
[ 244.408110] cloud-init[1256]: File
"/usr/lib/python3/dist-packages/cloudinit/distros/networking.py", line 177, in
wait_for_physdevs
[ 244.420109] cloud-init[1256]: raise RuntimeError(msg)
[ 244.432230] cloud-init[1256]: RuntimeError: Not all expected physical
devices present: {'8c:dc:d4:b3:6d:e8', '8c:dc:d4:b3:6d:e9'}
[ 244.444140] cloud-init[1256]:
------------------------------------------------------------
[ 304.197386] cloud-init[1256]: 2022-03-31 05:47:39,843 -
handlers.py[WARNING]: failed posting event: finish: init-network: SUCCESS:
searching for network datasources
There might be a related or unrelated (not sure) later crash on not finding
any datasource. But you'll see so in the logs that I'll upload.
And as I said you "might" say you configured these devices and they are not
there what are we supposed to do, but seeing the crash I wondered if there
might be a better way and wnated to bring it up for your consideration.
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