The raw-volume interface

raw-volume provides access to a specific disk partition. This interface is restricted because it provides privileged access to device partitions.

The slot is intended to be implemented by a gadget snap and is not provided by the core system snap.

Auto-Connect: no

  • path (slot): path to device partition e.g. /dev/mmcblk0p1

Requires snapd version 2.43+.

To to use a disk partition, the snap developer must add plugs: [ raw-volume ] to a snap’s snapcraft.yaml. The snap user can then access a specific disk partition with an interface connection.

Use snap interface raw-volume to see which disk partitions are available on the system for snaps to use:

$ snap interface raw-volume
name:    raw-volume
summary: allows access to specific disk partition
  - foo:mmcblk0p1
  - foo:mmcblk0p2

Once connected, the consuming snap can use the device via the path specified by the connected slot.

This is a snap interface. See Interface management and Supported interfaces for further details on how interfaces are used.

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