podman save not saving multiple images

Created on 15 Mar 2019 · 23Comments · Source: containers/podman

Is this a BUG REPORT or FEATURE REQUEST? (leave only one on its own line)
/kind bug

Description
When executing a podman save with multiple images only one image is saved.

Steps to reproduce the issue:

podman save > images.tar docker.io/busybox:1.27.2 docker.io/metallb/controller:v0.3.1 docker.io/metallb/speaker:v0.3.1
podman import images.tar
podman images

Describe the results you received:
Only the first image is saved and imported.

Describe the results you expected:
All three images should be saved and imported.

The documentation states podman save is the equivalent to docker save. Where as docker save can actually save multiple images at once.

Additional information you deem important (e.g. issue happens only occasionally):

Output of podman version:

podman version 1.1.2

Output of podman info --debug:

debug:
  compiler: gc
  git commit: ""
  go version: go1.10.2
  podman version: 1.1.2
host:
  BuildahVersion: 1.7.1
  Conmon:
    package: podman-1.1.2-2.git0ad9b6b.el7.x86_64
    path: /usr/libexec/podman/conmon
    version: 'conmon version 1.14.0-dev, commit: 6e07c13bf86885ba6d71fdbdff90f436e18abe39-dirty'
  Distribution:
    distribution: '"centos"'
    version: "7"
  MemFree: 96034816
  MemTotal: 3973865472
  OCIRuntime:
    package: runc-1.0.0-59.dev.git2abd837.el7.centos.x86_64
    path: /usr/bin/runc
    version: 'runc version spec: 1.0.0'
  SwapFree: 2147217408
  SwapTotal: 2147479552
  arch: amd64
  cpus: 2
  hostname: controller.lan
  kernel: 3.10.0-957.5.1.el7.x86_64
  os: linux
  rootless: false
  uptime: 59m 48.22s
insecure registries:
  registries: []
registries:
  registries:
  - registry.access.redhat.com
  - docker.io
  - registry.fedoraproject.org
  - quay.io
  - registry.centos.org
store:
  ConfigFile: /etc/containers/storage.conf
  ContainerStore:
    number: 0
  GraphDriverName: overlay
  GraphOptions: null
  GraphRoot: /var/lib/containers/storage
  GraphStatus:
    Backing Filesystem: xfs
    Native Overlay Diff: "true"
    Supports d_type: "true"
    Using metacopy: "false"
  ImageStore:
    number: 28
  RunRoot: /var/run/containers/storage
  VolumePath: /var/lib/containers/storage/volumes

Additional environment details (AWS, VirtualBox, physical, etc.):

kinbug stale-issue

Source

Prodian0013

Most helpful comment

This is being worked on .

rhatdan on 6 Jul 2020

👍2

All 23 comments

@haircommander PTAL

rhatdan on 15 Mar 2019

I got bitten by this bug as well. Saved multiple entries, all pointing to the _same_ image...

Guess I will use multiple files as a workaround, but would be good if it could be fixed ?

afbjorklund on 1 Apr 2019

@haircommander Any update on this?

rhatdan on 13 Apr 2019

@haircommander Any update on this?

baude on 29 May 2019

still waiting on https://github.com/containers/image/issues/610 . I don't have time currently to tackle it on c/image side

haircommander on 29 May 2019

My workaround was to use one tarball for each image, and a for loop to load them one-by-one.

find ... -type f | xargs -n 1 podman load -i

afbjorklund on 29 May 2019

@haircommander any update on this?

rhatdan on 5 Aug 2019

Unfortunately not, I am not sure I have the bandwidth to tackle it both here and in c/image.

haircommander on 5 Aug 2019

Ok @vrothberg You want to grab it?

rhatdan on 5 Aug 2019

Let's move discussion over to https://github.com/containers/image/issues/610. I add it to my backlog but I can't commit to a schedule at the moment.

vrothberg on 6 Aug 2019

This issue had no activity for 30 days. In the absence of activity or the "do-not-close" label, the issue will be automatically closed within 7 days.

github-actions[bot] on 4 Nov 2019

This is still a good issue, not sure when we can get someone to work on it?
@mtrmac @vrothberg PTAL

rhatdan on 4 Nov 2019

podman version

Version:            1.4.4
RemoteAPI Version:  1
Go Version:         go1.10.3
OS/Arch:            linux/amd64

podman info --debug

debug:
  compiler: gc
  git commit: ""
  go version: go1.10.3
  podman version: 1.4.4
host:
  BuildahVersion: 1.9.0
  Conmon:
    package: podman-1.4.4-4.el7.x86_64
    path: /usr/libexec/podman/conmon
    version: 'conmon version 0.3.0, commit: unknown'
  Distribution:
    distribution: '"rhel"'
    version: "7.7"
  MemFree: 4073623552
  MemTotal: 8350715904
  OCIRuntime:
    package: containerd.io-1.2.10-3.2.el7.x86_64
    path: /usr/bin/runc
    version: |-
      runc version 1.0.0-rc8+dev
      commit: 3e425f80a8c931f88e6d94a8c831b9d5aa481657
      spec: 1.0.1-dev
  SwapFree: 0
  SwapTotal: 0
  arch: amd64
  cpus: 12
  hostname: registry
  kernel: 3.10.0-1062.el7.x86_64
  os: linux
  rootless: false
  uptime: 56m 35.65s
registries:
  blocked: null
  insecure: null
  search:
  - registry.access.redhat.com
  - docker.io
  - registry.fedoraproject.org
  - quay.io
  - registry.centos.org
store:
  ConfigFile: /etc/containers/storage.conf
  ContainerStore:
    number: 1
  GraphDriverName: overlay
  GraphOptions: null
  GraphRoot: /var/lib/containers/storage
  GraphStatus:
    Backing Filesystem: xfs
    Native Overlay Diff: "true"
    Supports d_type: "true"
    Using metacopy: "false"
  ImageStore:
    number: 2
  RunRoot: /var/run/containers/storage
  VolumePath: /var/lib/containers/storage/volumes

docker version

Client: Docker Engine - Community
 Version:           19.03.5
 API version:       1.40
 Go version:        go1.12.12
 Git commit:        633a0ea
 Built:             Wed Nov 13 07:25:41 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.5
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.12
  Git commit:       633a0ea
  Built:            Wed Nov 13 07:24:18 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.10
  GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
 runc:
  Version:          1.0.0-rc8+dev
  GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

docker save multiple images work fine.

IDS=$(docker images | awk '{if ($1 ~ /^(registry)/) print $3}')
echo $IDS
docker save $IDS -o xxx.tar

podman save multiple images work failed.

IDS=$(podman images | awk '{if ($1 ~ /^(registry)/) print $3}')
echo $IDS
podman save $IDS -o xxx.tar

YuLimin on 16 Jan 2020

👍1

This is still a good issue, not sure when we can get someone to work on it?
@mtrmac @vrothberg PTAL

I fear we have other tasks with higher priority on our tables at the moment. Let's move discussion over to https://github.com/containers/image/issues/610.

vrothberg on 31 Jan 2020

Sadly no progress.

rhatdan on 18 Feb 2020

I am trying to champion podman over docker; however, colleagues use "docker save" to air gap images to a docker-archive tarball. This translates into "podman" not being a drop-in replacement "docker", which is suboptimal. At the least, "podman save" should error out indicating "can't do multiple images" rather than silently succeeding with something that is simply not equivalent to "docker save".

marcfiu on 30 Mar 2020

Thanks for the feedback, @marcfiu! Throwing an error is definitely better.

vrothberg on 30 Mar 2020

I opened https://github.com/containers/libpod/pull/5659 to address your feedback. Note that I didn't error out but log when more than one argument is passed as I don't want others to regress on the current behavior.

vrothberg on 30 Mar 2020

@baude, afaiu this issue should get some attention soon, right?

vrothberg on 4 Jun 2020

A friendly reminder that this issue had no activity for 30 days.

github-actions[bot] on 5 Jul 2020

This is being worked on .

rhatdan on 6 Jul 2020

👍2

A friendly reminder that this issue had no activity for 30 days.

github-actions[bot] on 6 Aug 2020

Most of the work is happening in containers/image right now.

rhatdan on 6 Aug 2020