[Bug 1802591] Re: Skip enslaved devices during boot

[Marcelo Cerri]

[Impact]

In order to support live migration in OCI, we need to filter enslaved
network devices during boot. Without that OCI instances will freeze
after migration.

In order to avoid regressions for other users, the new behaviour is
being conditioned to the existence of "/conf/conf.d/skip-enslaved-
devices" in the initrd image. This mechanism enable us to use it only
for the required kernels. For the OCI use case, linux-oracle will be
responsible to include the config file via an initramfs-tools hook.

[Test Case]

Currently the OCI use case can only be tested internally by Oracle since
live migration is still no available. For any other scenarios, the
behaviour should not be changed.

[Regression Potential]

The potential for regressions was vastly reduced by conditioning the new
behaviour.

** Changed in: initramfs-tools (Ubuntu)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1802591

Title:
  Skip enslaved devices during boot

Status in initramfs-tools package in Ubuntu:
  In Progress

Bug description:
  In order to support live migration in OCI, we need to filter enslaved
  devices during boot.

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