Overlay mounts supersede image volumes & volumes-from #24565
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test/e2e/run_volume_test.go
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| @@ -1089,4 +1089,20 @@ RUN chmod 755 /test1 /test2 /test3`, ALPINE) | |||
| Expect(checkCtr.OutputToString()).To(ContainSubstring("foo")) | |||
| Expect(checkCtr.OutputToString()).To(ContainSubstring("bar")) | |||
| }) | |||
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| It("user-specified overlay supersedes image volume", func() { | |||
| err = podmanTest.RestoreArtifact(REDIS_IMAGE) | |||
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We need something with an image volume, Redis has an image volume, and the other tests in the file use it.
I can probably convert over to nginx which I think is cached?
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Actually nginx does not have an image volume, I was misremembering.
I could build an image locally based on alpine with a volume but I don't know if that's any faster.
| for dest := range baseMounts { | ||
| if _, ok := baseVolumes[dest]; ok { | ||
| return nil, nil, nil, fmt.Errorf("baseMounts conflict at mount destination %v: %w", dest, specgen.ErrDuplicateDest) | ||
| } | ||
| if _, ok := unifiedOverlays[dest]; ok { | ||
| return nil, nil, nil, fmt.Errorf("baseMounts conflict with overlay mount at mount destination %v: %w", dest, specgen.ErrDuplicateDest) |
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I don't quite follow the code, how would one trigger this error condition? Can we test that?
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Sure, easily. podman run -v myvol:/test -v /my-overlay-mount:/test:O .... I'll add it.
This matches the behavior of other volume and mount types. Image volumes and volumes/mounts from the `--volumes-from` flag should be overridden by actual user-specified named volumes and mounts, but this was not true for overlay mounts. Fortunately, our duplicate-mount detection logic still works, so we got a good error message at least. The fix is simple - extend our supersede logic, which currently only works with named volumes and mounts, to also work with overlay mounts. Fixes containers#24555 Signed-off-by: Matt Heon <[email protected]>
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One flake, looked network related, green otherwise. @containers/podman-maintainers PTAL |
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This matches the behavior of other volume and mount types. Image volumes and volumes/mounts from the
--volumes-fromflag should be overridden by actual user-specified named volumes and mounts, but this was not true for overlay mounts. Fortunately, our duplicate-mount detection logic still works, so we got a good error message at least.The fix is simple - extend our supersede logic, which currently only works with named volumes and mounts, to also work with overlay mounts.
Fixes #24555
Does this PR introduce a user-facing change?