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This patch adds --tmpfs as a option for mounting tmpfs on directories

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It will Tar up contents of child directory onto tmpfs if mounted over

This patch will use the new PreMount and PostMount hooks to "tar"
up the contents of the base image on top of tmpfs mount points.

Signed-off-by: Dan Walsh <dwalsh@redhat.com>
This commit is contained in:
Dan Walsh
2015-12-01 13:39:34 -05:00
parent db6c4c99d8
commit b3e527dfd2
24 changed files with 248 additions and 11 deletions
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18
integration-cli/docker_cli_run_unix_test.go
View File

@@ -438,3 +438,21 @@ func (s *DockerSuite) TestRunWithShmSize(c *check.C) {
c.Assert(err, check.IsNil)
c.Assert(shmSize, check.Equals, "1073741824")
}
func (s *DockerSuite) TestRunTmpfsMounts(c *check.C) {
// TODO Windows (Post TP4): This test cannot run on a Windows daemon as
// Windows does not support tmpfs mounts.
testRequires(c, DaemonIsLinux)
if out, _, err := dockerCmdWithError("run", "--tmpfs", "/run", "busybox", "touch", "/run/somefile"); err != nil {
c.Fatalf("/run directory not mounted on tmpfs %q %s", err, out)
}
if out, _, err := dockerCmdWithError("run", "--tmpfs", "/run:noexec,nosuid,rw,size=5k,mode=700", "busybox", "touch", "/run/somefile"); err != nil {
c.Fatalf("/run failed to mount on tmpfs with valid options %q %s", err, out)
}
if _, _, err := dockerCmdWithError("run", "--tmpfs", "/run:foobar", "busybox", "touch", "/run/somefile"); err == nil {
c.Fatalf("/run mounted on tmpfs when it should have vailed within invalid mount option")
}
if _, _, err := dockerCmdWithError("run", "--tmpfs", "/run", "-v", "/run:/run", "busybox", "touch", "/run/somefile"); err == nil {
c.Fatalf("Should have generated an error saying Duplicate mount points")
}
}