Phil Estes aa9b58cd0b Don't test resolv.conf updater on overlay filesystem ...

The overlay filesystem does not support inotify at this time. The
resolv.conf updater test was passing on overlay-based Jenkins because of
a fluke--because it was DIND, /etc/resolv.conf on the "host" was really
a bind-mounted resolv.conf from the outer container, which means a watch
directly on that file worked as it was not overlay backed.  The new test
(from #10703) unmounts the bind-mounted copy to test create and modify
code-paths, which caused us to hit the issue.

This PR also adds a note to the docs about the lack of auto-update when
using the overlay storage driver.

See https://lkml.org/lkml/2012/2/28/223 for more info on inotify and
overlay.

Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp)
Upstream-commit: 9057ca2541582fc41eb7cb45edd332247a813bba
Component: engine

2015-03-05 00:22:01 -05:00

components/engine

Don't test resolv.conf updater on overlay filesystem

2015-03-05 00:22:01 -05:00

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