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Add Azure Gen2 and NVMe support for stemcells #469

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7a6b333
Support ACG gen2 features
s4heid Dec 10, 2025
52285f5
Add NVMe settings for Azure
s4heid Jan 19, 2026
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9 changes: 8 additions & 1 deletion bosh-stemcell/lib/bosh/stemcell/infrastructure.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -188,7 +188,14 @@ def initialize
end

def additional_cloud_properties
{'root_device_name' => '/dev/sda1'}
{
'root_device_name' => '/dev/sda1',
'generation' => 'gen2',
'accelerated_networking' => true,
'hibernation' => true,
'disk_controller_types' => ['scsi', 'nvme'],
'security_type' => 'TrustedLaunchSupported'
}
end
end

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1 change: 1 addition & 0 deletions bosh-stemcell/spec/assets/dpkg-list-ubuntu-azure-additions.txt
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@@ -1,3 +1,4 @@
azure-vm-utils
cloud-init
netplan.io
python-is-python3
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9 changes: 8 additions & 1 deletion bosh-stemcell/spec/bosh/stemcell/infrastructure_spec.rb
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Expand Up @@ -162,7 +162,14 @@ module Bosh::Stemcell
it { should eq Infrastructure.for('azure') }

it 'has azure specific additional cloud properties' do
expect(subject.additional_cloud_properties).to eq({'root_device_name' => '/dev/sda1'})
expect(subject.additional_cloud_properties).to eq({
'root_device_name' => '/dev/sda1',
'generation' => 'gen2',
'accelerated_networking' => true,
'hibernation' => true,
'disk_controller_types' => ['scsi', 'nvme'],
'security_type' => 'TrustedLaunchSupported'
})
end
end

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5 changes: 5 additions & 0 deletions stemcell_builder/stages/image_install_grub/apply.sh
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Expand Up @@ -73,6 +73,11 @@ case "${stemcell_infrastructure}" in
aws)
grub_suffix="nvme_core.io_timeout=4294967295"
;;
azure)
# For NVMe storage, Microsoft recommends setting nvme_core.io_timeout to 240 seconds
# to avoid IO timeouts and let Azure handle disk failures or interruptions.
grub_suffix="nvme_core.io_timeout=240"
;;
cloudstack)
grub_suffix="console=hvc0"
;;
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2 changes: 1 addition & 1 deletion stemcell_builder/stages/system_azure_init/apply.sh
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Expand Up @@ -5,7 +5,7 @@ set -e
base_dir=$(readlink -nf $(dirname $0)/../..)
source $base_dir/lib/prelude_apply.bash

packages="python3 python3-pyasn1 python3-setuptools python3-distro python-is-python3 cloud-init"
packages="python3 python3-pyasn1 python3-setuptools python3-distro python-is-python3 cloud-init azure-vm-utils"
pkg_mgr install $packages

wala_release=2.9.1.1
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