In the common case where the user is using /var/lib/docker and
an image with less than 60 layers, forking is not needed. Calculate
whether absolute paths can be used and avoid forking to mount in
those cases.
Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
Upstream-commit: c13a985fa1196a5ed782d5ac68a4bbb68dd529ca
Component: engine
Add option to skip kernel check for older kernels which have been patched to support multiple lower directories in overlayfs.
Fixes#24023
Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
Upstream-commit: ff98da0607c4d6a94a2356d9ccaa64cc9d7f6a78
Component: engine
Symlinks are currently not getting cleaned up when removing layers since only the root directory is removed.
On remove, read the link file and remove the associated link from the link directory.
Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
Upstream-commit: e6f2e7646c813e8225b0bc16d3a0c13c76a9cd97
Component: engine
We added docs about ecryptfs check but not in code side.
Also refactor code to make it clean.
Signed-off-by: Kai Qiang Wu(Kennan) <wkqwu@cn.ibm.com>
Upstream-commit: 136323b04315eceffbed61d680878ed23cecc015
Component: engine
Adds a new overlay driver which uses multiple lower directories to create the union fs.
Additionally it uses symlinks and relative mount paths to allow a depth of 128 and stay within the mount page size limit.
Diffs and done directly over a single directory allowing diffs to be done efficiently and without the need fo the naive diff driver.
Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
Upstream-commit: 23e5c94cfb26eb72c097892712d3dbaa93ee9bc0
Component: engine
