src/uv_writer.c:370: UvWriterClose: Assertion `!w->closing' failed

[tomponline]

https://jenkins.linuxcontainers.org/job/lxd-github-pull-test/5139/arch=arm64,backend=dir,compiler=golang-1.16/console#console-section-5

/lxc-ci/build/tmp.KQmG1cbVOF/go/bin/lxc copy c1 c2 --refresh --instance-only --verbose
lxd: src/uv_writer.c:370: UvWriterClose: Assertion `!w->closing' failed.
Error: Put "http://unix.socket/1.0/instances/c2": EOF

[MathieuBordere]

Have found a way to reproduce this, keep you posted once I figure out how to fix it.

[MathieuBordere]

I hope #265 fixes this one, if it doesn't occur in the lxd test suite for a while after this PR is merged, I will close this issue.

[freeekanayaka]

Do you think there's a correlation between this issue and the PR that started to finalize open segments when taking snapshots? From the PR description I would expect so, but just wanted to confirm it's due to that change.

[MathieuBordere]

This issue appeared before that PR, but the PR seems to make it occur more often (at least I was able to reproduce it, before I wasn't), my feeling is that there are probably still other ways to trigger it.

[freeekanayaka]

Ah I see, good that the PR made it more evident then.

[MathieuBordere]

@tomponline Have you seen this one since then?

[tomponline]

Not that ive been aware of, but not been looking out for it particularly.

[MathieuBordere]

Will close for now, happy to reopen if it pops up again.