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hyperhq / hyperstart

The tiny Init service for HyperContainer
https://www.hypercontainer.io
Apache License 2.0
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all containers need to share the same /dev/shm #323

Closed laijs closed 7 years ago

laijs commented 7 years ago

all containers need to share the same /dev/shm, the same tmpfs mount with bindmount for sharing. since all containers share the same ipc ns in the sandbox.

More investigation is needed.

ref: setupIpcDirs() in moby/daemon/container_operations_unix.go

laijs commented 7 years ago

https://github.com/moby/moby/issues/12046 quote:

Man pages say /dev/shm, but my experience was that glibc starts with/dev/shm and if not a tmpfs, scans /proceed/mounts for any tmpfs.

After quickly going through the man pages and the glibc code. So it is indeed!