From 635b0c45933cd841298b0c21a513a9169e849594 Mon Sep 17 00:00:00 2001 From: Kevin Krakauer Date: Wed, 15 Aug 2018 16:24:07 -0700 Subject: runsc fsgofer: Support dynamic serving of filesystems. When multiple containers run inside a sentry, each container has its own root filesystem and set of mounts. Containers are also added after sentry boot rather than all configured and known at boot time. The fsgofer needs to be able to serve the root filesystem of each container. Thus, it must be possible to add filesystems after the fsgofer has already started. This change: * Creates a URPC endpoint within the gofer process that listens for requests to serve new content. * Enables the sentry, when starting a new container, to add the new container's filesystem. * Mounts those new filesystems at separate roots within the sentry. PiperOrigin-RevId: 208903248 Change-Id: Ifa91ec9c8caf5f2f0a9eead83c4a57090ce92068 --- runsc/container/container.go | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'runsc/container') diff --git a/runsc/container/container.go b/runsc/container/container.go index 574075b00..da2ce0d25 100644 --- a/runsc/container/container.go +++ b/runsc/container/container.go @@ -249,6 +249,13 @@ func Create(id string, spec *specs.Spec, conf *boot.Config, bundleDir, consoleSo return nil, err } c.Sandbox = sb.Sandbox + + // Prepare the gofer to serve the container's filesystem. + err = sb.Sandbox.CreateChild(c.ID, bundleDir) + if err != nil { + c.Destroy() + return nil, err + } } c.Status = Created -- cgit v1.2.3