This makes sure the client is always in sync with the server before
performing any type of operations on the container metadata.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Updates metadata plugin to require content and
snapshotter plugins be loaded and initializes with
those plugins, keeping the metadata database structure
static after initialization. Service plugins now only
require metadata plugin access snapshotter or content
stores through metadata, which was already required
behavior of the services.
Signed-off-by: Derek McGowan <derek@mcgstyle.net>
Adds back links from parent to children in order to prevent
deletion of a referenced snapshot in a namespace.
Avoid removing snapshot during metadata delete to
prevent shared namespaces from being mistakenly deleted.
Signed-off-by: Derek McGowan <derek@mcgstyle.net>
This is needed for users on kernel older than 3.18 so they can avoid EBUSY
errors when trying to unlink, rename or remove a mountpoint that is present in
a shim namespace.
Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>
The `Check` function returns information about an image's content components
over a content provider. From this information, one can tell which content is
required, present or missing to run an image.
The utility can be demonstrated with the `check` command:
```console
$ ctr images check
REF TYPE DIGEST STATUS SIZE
docker.io/library/alpine:latest application/vnd.docker.distribution.manifest.list.v2+json sha256:f006ecbb824d87947d0b51ab8488634bf69fe4094959d935c0c103f4820a417d incomplete (1/2) 1.5 KiB/1.9 MiB
docker.io/library/postgres:latest application/vnd.docker.distribution.manifest.v2+json sha256:2f8080b9910a8b4f38ff5a55a82e77cb43d88bdbb16d723c71d18493590832e9 complete (13/13) 99.3 MiB/99.3 MiB
docker.io/library/redis:alpine application/vnd.docker.distribution.manifest.v2+json sha256:e633cded055a94202e4ccccb8125b7f383cd6ee56527ab890db643383a2647dd incomplete (6/7) 8.1 MiB/10.0 MiB
docker.io/library/ubuntu:latest application/vnd.docker.distribution.manifest.list.v2+json sha256:60f835698ea19e8d9d3a59e68fb96fb35bc43e745941cb2ea9eaf4ba3029ed8a unavailable (0/?) 0.0 B/?
docker.io/trollin/busybox:latest application/vnd.docker.distribution.manifest.list.v2+json sha256:54a6424f7a2d5f4f27b3d69e5f9f2bc25fe9087f0449d3cb4215db349f77feae complete (2/2) 699.9 KiB/699.9 KiB
```
The above shows us that we have two incomplete images and one that is
unavailable. The incomplete images are those that we know the complete
size of all content but some are missing. "Unavailable" means that the
check could not get enough information about the image to get its full
size.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
Now that golang.org/x/sys/unix provides the Mkdev, Major and Minor
functions for every OS, use them instead of the locally defined version
which uses the Linux specific device major/minor encoding.
This also means that the device number should now be properly encoded on
e.g. Darwin, FreeBSD or Solaris.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
The SIGUNUSED constant was removed from golang.org/x/sys/unix in
https://go-review.googlesource.com/61771 as it is also removed from the
respective glibc headers.
This means the command
ctr tasks kill SIGUNUSED ...
will no longer work. However, the same effect can be achieved with
ctr tasks kill SIGSYS ...
as SIGSYS has the same value as SIGUNUSED used to have.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
