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Bug#914511: Please enable the "virtio-rng" driver in "cloud" kernels

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  Bug#914511: Please enable the "virtio-rng" driver in "cloud" kernels Martijn van de Streek <martijn@vandestreek.net> - 2018-11-24 08:30 +0100
    Bug#914511: Please enable the "virtio-rng" driver in "cloud" kernels Cédric Dufour <cedric.dufour@exoscale.ch> - 2019-07-09 09:20 +0200
      Bug#914511: Please enable the "virtio-rng" driver in "cloud" kernels Cédric Dufour <cedric.dufour@exoscale.ch> - 2019-07-09 19:10 +0200
    Bug#914511: No virtio-rng in cloud images Neil Wilson <neil@aldur.co.uk> - 2019-07-10 17:00 +0200
    Bug#914511: marked as done (Please enable the "virtio-rng" driver  in "cloud" kernels) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2019-08-06 08:10 +0200

#62546 — Bug#914511: Please enable the "virtio-rng" driver in "cloud" kernels

Package: linux-image-cloud-amd64
Version: 4.18+99

The "HW_RANDOM_VIRTIO" configuration setting is not currently enabled in
the "cloud" flavour of kernel images.

KVM virtual machines set up by virt-manager (and possibly virt-install,
I'm not sure) come with a virtual random device like that by default,
and would benefit from the driver being available if they need a lot of
randomness.

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#64411

Now that *u*random is blocking until considered properly initialized, 
the entropy starvation [1] issue becomes a real problem during the boot 
process; e.g. it takes several minutes until one gets SSH access to the box.

[1] 
https://www.debian.org/releases/buster/amd64/release-notes/ch-information.en.html#entropy-starvation

-- 
Cédric Dufour - Exoscale (Lausanne, Switzerland)

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#64413

Workaround: have the hypervisor expose the 'rdrand' CPU feature to the VM

(but this is in the hands of the hypervisor's provider, not the VM user)

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#64417 — Bug#914511: No virtio-rng in cloud images

The same issue here. There are no hwrandom devices on the VM when it
starts. The hypervisor is configured to supply entropy via the
virtio-rng device, which all works as expected with Ubuntu cloud
images

-- 
Neil Wilson - Brightbox (Leeds, UK)

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#64660 — Bug#914511: marked as done (Please enable the "virtio-rng" driver in "cloud" kernels)

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Your message dated Tue, 06 Aug 2019 06:00:12 +0000
with message-id <E1husW4-000Ih5-BZ@fasolo.debian.org>
and subject line Bug#914511: fixed in linux 5.2.6-1
has caused the Debian Bug report #914511,
regarding Please enable the "virtio-rng" driver in "cloud" kernels
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
914511: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914511
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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