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Robert Fairley c89f81c138 libvm: Use shared memory for SSH control socket instead of /var/tmp 
In Fedora 29, and Fedora 30 Silverblue, I have come across the
following error when executing `make vmsync` from my build container
(also on Fedora 29 and Fedora 30 images respectively):

```
...
Failed to connect to new control master
...
Control socket connect(/var/tmp/ssh-vmcheck-1556768111752693879.sock): Connection refused
Failed to connect to new control master
...
```

Previously this worked with Fedora 28 as the host.

After changing the socket to be in /dev/shm, the SSH connection to
the `vmcheck` VM is successful and the sources sync over.

The cause of this seems to be a problem with overlayfs and unix
sockets: https://github.com/moby/moby/issues/12080

Since overlayfs is the default graph driver in Fedora now, work
around this by switching the socket to be in /dev/shm.

Closes: #1827
Approved by: jlebon
2019-05-02 20:43:28 +00:00
..
check
common libvm: Use shared memory for SSH control socket instead of /var/tmp 2019-05-02 20:43:28 +00:00
compose-tests
composedata
ex-container-tests
gpghome
manual
utils
vmcheck
compose
ex-container
README.md

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.