RFR: 8340092: [Linux] containers/systemd/SystemdMemoryAwarenessTest.java failing on some systems

[Severin Gehwolf]

On Fri, 13 Sep 2024 09:10:19 GMT, Severin Gehwolf <sgehwolf at openjdk.org> wrote:

> Please review this trivial test fix. The test fails if the `<slice>.d` directory already exists (for some reason). It needs to exist for the test to work. But if it exists we ignore the failure, thus using `Files.createDirectories()`.
> 
> As a benefit I've also added `exclusiveAccess.dirs=.` to the `systemd` test directory to match container tests in `docker` folder and added `TRUNCATE_EXISTING` for files in the `<slice>.d` directory. Both of which should ensure the test runs more reliably.
> 
> Testing:
> - [ ] GHA
> - [x] Manual testing by creating the directory first, running the test. Failed. The same handshake passes after the patch.
> 
> Thanks!

Also in the `*.jtr` files there should be more info if there is error (`STDERR`) or standard (`STDOUT`) output.

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PR Comment: https://git.openjdk.org/jdk/pull/20989#issuecomment-2352363477