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Colin Walters d2bd8500da compose: Add tmp-is-dir option to make /tmp a directory 
There are a few reasons to do this. First, systemd changed to refuse mounts on
symlinks, and hence if one *wants* "/tmp-on-tmpfs", one would need to write a
different `sysroot-tmp.mount` unit.

Second, the original rationale for having this symlink was that if you had
multiple ostree stateroots ("osnames"), it's nicer if they had the same `/tmp`
to avoid duplication. But in practice today that's already an issue due to
`/var/tmp`, and further the multiple-stateroot case is pretty unusual. And that
case is *further* broken by SELinux (if one wanted to have e.g. an Ubuntu and
Fedora) stateroots.  So let's fully decouple this and make `/tmp` a plain
old directory by default, so systemd's `tmp.mount` can become useful.

Now, things get interesting for the case where someone wants a physical `/tmp`
that *does* persist across reboots. Right now, if one just did a `systemctl mask
tmp.mount` as we do in Fedora Atomic Host's cloud images, you'd get a semantic
where `/tmp` stays per-deployment, which is weird.  Our recommendation for
that should likely be to set up a bind mount for `/tmp` → `/var/tmp`.

For now, this stays an option to ensure compatibility; if FAH Cloud images
want to stay with "physical /tmp", then we'd have to change the kickstart.

Closes: https://github.com/projectatomic/rpm-ostree/issues/669

Closes: #778
Approved by: jlebon
2017-05-24 17:49:36 +00:00
..
check rebase: allow rebasing to a local branch 2017-05-05 21:01:26 +00:00
common core: Ignore overrides for nonexistent %ghost files in /etc 2017-05-24 15:53:07 +00:00
compose-tests compose: Add tmp-is-dir option to make /tmp a directory 2017-05-24 17:49:36 +00:00
composedata compose: fix bad baseurl 2017-01-21 15:27:11 +00:00
gpghome daemon: start with one commit only when resolving versions 2016-12-24 12:28:48 +00:00
manual db: Remove query parameter to diff 2015-04-23 16:30:18 -04:00
utils ci: Build ostree from git temporarily 2017-03-27 16:35:43 +00:00
vmcheck livefs: Fix etc merge with subdirectories 2017-05-23 20:34:47 +00:00
compose core: add RPMOSTREE_USE_CACHED_METADATA 2017-01-08 21:05:06 +00:00
README.md tests: Add ./tests/compose 2016-12-06 19:05:05 +00:00

README.md

Tests are divided into three groups:

  • Tests in the check directory are non-destructive and uninstalled. Some of the tests require root privileges. Use make check to run these.

  • The composecheck tests currently require uid 0 capabilities - the default in Docker, or you can run them via a user namespace. They are non-destructive, but are installed.

    To use them, you might do a make && sudo make install inside a Docker container.

    Then invoke ./tests/compose. Alternatively of course, you can simply run the tests on a host system or in an existing container, without doing a build.

    Note: This is intentionally not a Makefile target because it doesn't require building and doesn't use uninstalled binaries.

  • Tests in the vmcheck directory are oriented around using Vagrant. Use make vmcheck to run them. See also HACKING.md in the top directory.

The common directory contains files used by multiple tests. The utils directory contains helper utilities required to run the tests.