[release-1.23] utils/RunUnderSystemdScope: fix wrt channel deadlock #5961
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As seen in [1], sometimes coreos/go-systemd/dbus package deadlocks: the jobCompete is stuck trying to send job result string to the channel while holding the jobListener lock, while startJob (called by StartTransientUnit) waits for the same lock. Alas, it is not clear why the channel is not being read, nor was I able to reproduce it locally. Make the job result channel buffered, so jobJistener won't block on channel send and thus StartTransientUnit won't be stuck either. While at it, - move the error wrapping out of mgr.RetryOnDisconnect function, and use fmt.Errorf with %w instead of obsoleted errors.Wrap; - improve error messages, printing the systemd unit name (so we can check it in systemd log); - do check the job result string -- in case it is not "done", return an error back to the caller, which should help avoid other issues down the line. [1] https://bugzilla.redhat.com/show_bug.cgi?id=2082344 Signed-off-by: Kir Kolyshkin <[email protected]>
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/lgtm |
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/retest-required Please review the full test history for this PR and help us cut down flakes. |
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/retest-required Please review the full test history for this PR and help us cut down flakes. |
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/cherry-pick release-1.22 |
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@haircommander: new pull request created: #6061 DetailsIn response to this:
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This is an automated cherry-pick of #5954
/assign haircommander