Improve autopkgtest stability with systemd 253 & iproute 6.4 #377
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The RPM build CI failure on fedora:rawhide seems unrelated. |
| @@ -278,6 +279,15 @@ def start_dnsmasq(self, ipv6_mode, iface): | |||
| else: | |||
| self.poll_text(dnsmasq_log, 'DHCP, IP range') | |||
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| def iface_json(self, iface: str) -> dict: | |||
| '''Return iproute2's (detailed) JSON representation''' | |||
| out = subprocess.check_output(['ip', '-j', '-d', 'a', 'show', 'dev', iface], | |||
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question: should we handle a possible call against an interface that doesn't exist?
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I don't think that's necessarily needed. This is only part of the integration tests, so all we could do is: bail out.
If the interface doesn't exist, this will crash with an error message, too, as-is.
IMHO, no need to over-engineer this, but rather keep it small and simple in the test framework. All the input is controlled, as it originates from our own test scripts, not random user input.
| @@ -278,6 +279,15 @@ def start_dnsmasq(self, ipv6_mode, iface): | |||
| else: | |||
| self.poll_text(dnsmasq_log, 'DHCP, IP range') | |||
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| def iface_json(self, iface: str) -> dict: | |||
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question: does this change affect other parts of netplan, like netplan status?
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No. netplan status has been using iproute2's JSON integration from the start. This change only affects the base class of Netplan's integration tests.
But we want to migrate more parts of our integration tests to use this JSON interface. As other issues of the same type might occur in the future when we keep parsing the CLI output.
Starting with the systemd v253 update NetworkManager started taking implicit control of certain interfaces, blocking itself (after a restart) from managing those interface through its configure netplan-* connection profile. https://bugs.debian.org/1039071
iproute2 v6.4 changed its CLI output, the JSON output is expected to stay stable, so we should migrate to using iface_json() over time. https://bugs.debian.org/1040004
iproute2 v6.4 changed its CLI output, the JSON output is expected to stay stable, so we should migrate to using iface_json() over time. https://bugs.debian.org/1040004
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Thank you! I rebased and addressed your comments. I think this is ready to be merged, once CI is green. |
Description
https://bugs.debian.org/1039071
https://bugs.debian.org/1040004
Also, resolves a race condition where the following text is already gone from the buffer at the time when we check the assertions. We see such failures a lot in the Ubuntu autopkgtests:
Checklist
make checksuccessfully.make check-coverage).