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)
- add extfs overlay to OCI-SIF via `singularity overlay`
- default r/o mount of extfs overlay in --oci mode
- optional --writable mount of extfs overlay in --oci mode
- `singularity overlay seal` conversion of overlay to r/o layer in OCI-SIF
- overlay seal and conversion in `singularity push` of OCI-SIF as tar layers
- OCI-SIF data container creation command HOT 1
- Support OCI-SIF data-container in --bind & --mount
- Support squashfs->tar in push of an OCI-SIF data container
- Remove CentOS 7 from CI matrix:
- Remove EL7, SLES 11 examples
- Remove Yum CentOS7 bootstrap tests
- Remove CentOS 7 regression test for issue 5250 HOT 1
- Remove CentOS 7 install specifics:
- Remove kernel version as proxy requirement for OCSP test
- Remove EL7 test case / handling of old ld listing HOT 1
- oci: fixed descriptor capacity for OCI-SIF prevents pulling some images
- singularity build --fakeroot fails with free(): invalid pointer while spawning RPC server HOT 3
- Pip install uses too much disk space - error with /tmp as tmpfs HOT 2
- Unknown image format/type in nextflow pipeline HOT 5
- Drop remaining direct containers/common usage
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