Comments (2)
I then bind some arbitrary empty host folder to the container image. The container path has pre-existing files/folders created as a part of the image during build.
This is normal behavior for Singularity. A straight bind mount is used - the directory bound-in will obscure whatever is already present at that location in the container. An overlay is not performed.
Also can't seem to find documentation on what to do when volumes need to be shared across instances.
Singularity differs from Docker in that it does not have a concept of volumes. The container filesystem is a combination of the container content, and direct binds from the host into the container. To share files between instances you would need a directory on the host that is bound into all of the instances.
from singularity.
Thanks for the clarification @dtrudg
from singularity.
Related Issues (20)
- OCI ConveyorPacker test failures
- Library ConveyorPacker Test Failure HOT 1
- SIFAssembler test failure
- tmpfs error using singularity with PID namespace on RHEL 8.8 HOT 5
- Does not build an .img file on Vagrant 2.4.1 on Mac(Sonoma 14.5 (23F79)) HOT 2
- 4.1.4 Backports
- Support singularity instance run HOT 2
- Error while building from image: "failed to create symlink /image/rootfs/var/tmp" HOT 11
- oci-mode: fallback to temporary sandbox not working on OCI-SIF images HOT 2
- oci-mode: fallback to tmp-sandbox from docker:// fails with 'no child with platform' error
- e2e: some e2e.Privileged returns not called
- Update manifest / config for correct overlay digest after changes HOT 1
- OCI mode execution fails with relative path to image
- Pull OCI image with overlay, without requiring --keep-layers HOT 1
- Pull OCI image with overlay, with --keep-layers
- Native mode OCI pull only honours platform for Image Indexes
- `overlay seal` is converting root of overlay, not `upper` directory
- `overlay seal` must handle fuse-overlayfs whiteouts sensibly HOT 2
- If fuse-overlayfs is used with a writable overlay, it should always be used in future.
- Join approved network namespaces
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from singularity.