For testing, I used kvm-test:
$ scripts/kvm-test.py --install --iso /srv/iso/plucky-live-server-
amd64.iso --recreate-target --nic user,model=virtio-net-
pci,hostfwd=tcp::2222-:22,net=10.0.2.0/24 --nic user,model=virtio-net-
pci,net=10.0.3.0/24
I am requesting two network interfaces because I want the ability to
play around with one of the interfaces (i.e., ens4) using Subiquity -
while preserving my SSH connection (which goes through the other
interface, ens3).
Unfortunately, when running into the segmentation fault, both interfaces
are left without IP settings applied. So this will still break the SSH
connection.
steps to reproduce the Link object mismatch between probert and subiquity
-------------------------------------------------------------------------
* navigate to the network settings
* switch IPv4 from "DHCPv4" to "Disabled" and wait until the change is applied
* switch IPv4 from "Disabled" to "DHCPv4"
You should see the animation for DHCP but the address will never become
visible. Opening the "Info" menu for ens4 will show: addresses: [] at
the top. That said, if you press F2 then `ip -4 addr`, you will see an
address for ens4.
Also, if you run
$ grep 'link_change: NEW' /var/log/installer/subiquity-server-debug.log
you will see an entry with the following info: {'name': b'ens4',
'family': 10}. This is what caused the mismatch.
steps to reproduce the crash (segmentation fault)
-------------------------------------------------
1. navigate to the network settings
2. switch IPv4 from "DHCPv4" to "Disabled" and wait until the change is applied
3. switch IPv4 from "Disabled" to "DHCPv4" and wait until the change is applied
4. repeat steps 2 and 3 a few times (but not too fast - there are UI crashes
too)
Indicators that subiquity might have crashed:
* The "Applying changes \" animation does not disappear.
* Hints in the journal:
ubuntu-server kernel: python3.12[1392]: segfault at 0 ip
0000000000000000000 [...]
ubuntu-server kernel: Code: Unable to access opcode bytes at
0xffffffffffffffd6
ubuntu-server subiquity.subiquity-server[1372]: Segmentation fault (core
dumped)
* The SSH connection dropped
* Running `ip -4 addr' shows no IP except for the loopback interface.
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https://bugs.launchpad.net/bugs/2105510
Title:
network page broken following libnl changes
To manage notifications about this bug go to:
https://bugs.launchpad.net/subiquity/+bug/2105510/+subscriptions
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