In an effort to make layer content 'stable' between import
and export from two different graph drivers, we must resolve
an issue where AUFS produces metadata files in its layers
which other drivers explicitly ignore when importing.
The issue presents itself like this:
- Generate a layer using AUFS
- On commit of that container, the new stored layer contains
AUFS metadata files/dirs. The stored layer content has some
tarsum value: '1234567'
- `docker save` that image to a USB drive and `docker load`
into another docker engine instance which uses another
graph driver, say 'btrfs'
- On load, this graph driver explicitly ignores any AUFS metadata
that it encounters. The stored layer content now has some
different tarsum value: 'abcdefg'.
The only (apparent) useful aufs metadata to keep are the psuedo link
files located at `/.wh..wh.plink/`. Thes files hold information at the
RW layer about hard linked files between this layer and another layer.
The other graph drivers make sure to copy up these psuedo linked files
but I've tested out a few different situations and it seems that this
is unnecessary (In my test, AUFS already copies up the other hard linked
files to the RW layer).
This changeset adds explicit exclusion of the AUFS metadata files and
directories (NOTE: not the whiteout files!) on commit of a container
using the AUFS storage driver.
Also included is a change to the archive package. It now explicitly
ignores the root directory from being included in the resulting tar archive
for 2 reasons: 1) it's unnecessary. 2) It's another difference between
what other graph drivers produce when exporting a layer to a tar archive.
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Upstream-commit: 0d97e082c3b849a6901992e653b8963e8ef10f54
Component: engine
The vfs storage driver currently shells out to the `cp` binary on the host
system to perform an 'archive' copy of the base image to a new directory.
The archive option preserves the modified time of the files which are created
but there was an issue where it was unable to preserve the modified time of
copied symbolic links on some host systems with an outdated version of `cp`.
This change no longer relies on the host system implementation and instead
utilizes the `CopyWithTar` function found in `pkg/archive` which is used
to copy from source to destination directory using a Tar archive, which
should correctly preserve file attributes.
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Upstream-commit: b6db23cffe942b8d94c80d1e9b3f1f6fca87d139
Component: engine
builder: some small fixups + fix a bug where empty entrypoints would not override inheritance.
Upstream-commit: c681bea0620d24e9df370147a13a98f94bc66ee0
Component: engine
Adding moar information, so benchmark comparisons can be moar
comparative.
Signed-off-by: Vincent Batts <vbatts@redhat.com>
Upstream-commit: 0fdf7839a21390f5813589195639caf594a3ddc2
Component: engine
Add --dryrun to allow testing to the docs-release site, and then fix the...
Upstream-commit: c6f242b88f7a40d183a95ab68f2a97052ec514a5
Component: engine
Rewrite ENTRYPOINT documentation covering all the combinations with exam...
Upstream-commit: 8f79bd964fa58124e0f3f4b1c1fdfef04f16a454
Component: engine
Port number 49153(BeginPortRange) would be returned twice, causing dupli...
Upstream-commit: 0e6242122d9780709c057fc32e9970529c2e09fb
Component: engine
Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp)
Upstream-commit: ee17b93df9ef2150d0ef25e077f1f87637a54508
Component: engine
Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp)
Upstream-commit: 6589044b5b84f82a71a756708b4a77b0bc49db42
Component: engine
