podman-remote network create: race condition creating conflist file

[edsantiago]

The following sequence is starting to fail frequently in CI:

# podman-remote network create a
# podman-remote network create b
# podman-remote run --network b something-something
Error: CNI network \"b\" not found"
         Error: error configuring network namespace for container X: CNI network "b" not found

I cannot reproduce it on my f33 laptop, possibly because it's faster than the CI VMs. What I can reproduce easily is:

# ./bin/podman-remote network create b;./bin/podman-remote network rm b

and then, in the podman server window, I see:

ERRO[1299] Error loading CNI config list file /etc/cni/net.d/b.conflist: error reading /etc/cni/net.d/b.conflist: open /etc/cni/net.d/b.conflist: no such file or directory

(not 100% of the time, but about 25%)

master @ 6fbf73e

Podman network [It] podman network prune

• gce_instance:fedora : int remote fedora-33 root host
  • PR Don't chown workdir if it already exists #9391
    • 02-16 05:44
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  • PR Refactor generated code #9348
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  • PR Support annotations from containers.conf #9284
    • 02-09 15:24
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    • 02-09 14:13
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  • PR Add missing params for podman-remote build  #9275
    • 02-21 06:02
    • 02-21 06:02
    • 02-21 06:02
    • 02-16 07:52
    • 02-16 07:52
• gce_instance:prior-fedora : int remote fedora-32 root host
  • PR cp: treat "." and "/." correctly #9428
    • 02-19 03:17
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    • 02-18 13:27
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  • PR Bump github.com/sirupsen/logrus from 1.7.0 to 1.7.1 #9406
    • 02-17 07:57
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  • PR do not set empty $HOME #9399
    • 02-16 09:37
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    • 02-16 09:37
  • PR bump to v3.1.0-dev #9301
    • 02-10 08:41
    • 02-10 08:41
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  • PR Add missing params for podman-remote build  #9275
    • 02-16 07:53
  • PR Allow path completion for podman create/run --rootfs #9269
    • 02-08 15:08
    • 02-08 15:08
    • 02-08 15:08

[Luap99]

@edsantiago I already chased that down see #9449 and cri-o/ocicni#85

[edsantiago]

@Luap99 your fix LGTM, thank you!

[Luap99]

The bigger question is why it started to fail now and ubuntu works fine. The code did not changed.