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feat: add Longhorn V2 hugepage settings (#942)

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This exposes the longhorn-v2-data-engine-hugepage-enabled and
longhorn-v2-data-engine-memory-size settings in the Harvester GUI, on
Harvester v1.9.0 and later.

Related-to: https://github.com/harvester/harvester/issues/9390

Signed-off-by: Tim Serong <tserong@suse.com>
This commit is contained in:
Tim Serong 2026-06-25 14:39:23 +10:00 committed by GitHub
parent 34dfe4027e
commit d03cff645b
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GPG Key ID: B5690EEEBB952194
3 changed files with 58 additions and 45 deletions
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3
pkg/harvester/config/feature-flags.js
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@ -72,7 +72,8 @@ const FEATURE_FLAGS = {
'v1.9.0': [ 'v1.9.0': [
'supportFilesystem', 'supportFilesystem',
'disableResourcePooling', 'disableResourcePooling',
'expandOnlineEncryptedVolume' 'expandOnlineEncryptedVolume',
'longhornV2HugepageSettings'
], ],
}; };

98
pkg/harvester/config/settings.ts
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@ -1,48 +1,50 @@
export const HCI_SETTING = { export const HCI_SETTING = {
BACKUP_TARGET: 'backup-target', BACKUP_TARGET: 'backup-target',
CONTAINERD_REGISTRY: 'containerd-registry', CONTAINERD_REGISTRY: 'containerd-registry',
LOG_LEVEL: 'log-level', LOG_LEVEL: 'log-level',
SERVER_VERSION: 'server-version', SERVER_VERSION: 'server-version',
UI_INDEX: 'ui-index', UI_INDEX: 'ui-index',
UPGRADE_CHECKER_ENABLED: 'upgrade-checker-enabled', UPGRADE_CHECKER_ENABLED: 'upgrade-checker-enabled',
UPGRADE_CHECKER_URL: 'upgrade-checker-url', UPGRADE_CHECKER_URL: 'upgrade-checker-url',
VLAN: 'vlan', VLAN: 'vlan',
UI_SOURCE: 'ui-source', UI_SOURCE: 'ui-source',
UI_PL: 'ui-pl', UI_PL: 'ui-pl',
HTTP_PROXY: 'http-proxy', HTTP_PROXY: 'http-proxy',
ADDITIONAL_CA: 'additional-ca', ADDITIONAL_CA: 'additional-ca',
OVERCOMMIT_CONFIG: 'overcommit-config', OVERCOMMIT_CONFIG: 'overcommit-config',
CLUSTER_REGISTRATION_URL: 'cluster-registration-url', CLUSTER_REGISTRATION_URL: 'cluster-registration-url',
DEFAULT_STORAGE_CLASS: 'default-storage-class', DEFAULT_STORAGE_CLASS: 'default-storage-class',
SUPPORT_BUNDLE_TIMEOUT: 'support-bundle-timeout', SUPPORT_BUNDLE_TIMEOUT: 'support-bundle-timeout',
SUPPORT_BUNDLE_EXPIRATION: 'support-bundle-expiration', SUPPORT_BUNDLE_EXPIRATION: 'support-bundle-expiration',
SUPPORT_BUNDLE_FILE_NAME: 'support-bundle-file-name', SUPPORT_BUNDLE_FILE_NAME: 'support-bundle-file-name',
SUPPORT_BUNDLE_IMAGE: 'support-bundle-image', SUPPORT_BUNDLE_IMAGE: 'support-bundle-image',
SUPPORT_BUNDLE_NODE_COLLECTION_TIMEOUT: 'support-bundle-node-collection-timeout', SUPPORT_BUNDLE_NODE_COLLECTION_TIMEOUT: 'support-bundle-node-collection-timeout',
STORAGE_NETWORK: 'storage-network', STORAGE_NETWORK: 'storage-network',
RWX_NETWORK: 'rwx-network', RWX_NETWORK: 'rwx-network',
VM_FORCE_RESET_POLICY: 'vm-force-reset-policy', VM_FORCE_RESET_POLICY: 'vm-force-reset-policy',
SSL_CERTIFICATES: 'ssl-certificates', SSL_CERTIFICATES: 'ssl-certificates',
SSL_PARAMETERS: 'ssl-parameters', SSL_PARAMETERS: 'ssl-parameters',
SUPPORT_BUNDLE_NAMESPACES: 'support-bundle-namespaces', SUPPORT_BUNDLE_NAMESPACES: 'support-bundle-namespaces',
AUTO_DISK_PROVISION_PATHS: 'auto-disk-provision-paths', AUTO_DISK_PROVISION_PATHS: 'auto-disk-provision-paths',
RELEASE_DOWNLOAD_URL: 'release-download-url', RELEASE_DOWNLOAD_URL: 'release-download-url',
CCM_CSI_VERSION: 'harvester-csi-ccm-versions', CCM_CSI_VERSION: 'harvester-csi-ccm-versions',
CSI_DRIVER_CONFIG: 'csi-driver-config', CSI_DRIVER_CONFIG: 'csi-driver-config',
CSI_ONLINE_EXPAND_VALIDATION: 'csi-online-expand-validation', CSI_ONLINE_EXPAND_VALIDATION: 'csi-online-expand-validation',
VM_TERMINATION_PERIOD: 'default-vm-termination-grace-period-seconds', VM_TERMINATION_PERIOD: 'default-vm-termination-grace-period-seconds',
NTP_SERVERS: 'ntp-servers', NTP_SERVERS: 'ntp-servers',
AUTO_ROTATE_RKE2_CERTS: 'auto-rotate-rke2-certs', AUTO_ROTATE_RKE2_CERTS: 'auto-rotate-rke2-certs',
KUBECONFIG_DEFAULT_TOKEN_TTL_MINUTES: 'kubeconfig-default-token-ttl-minutes', KUBECONFIG_DEFAULT_TOKEN_TTL_MINUTES: 'kubeconfig-default-token-ttl-minutes',
LONGHORN_V2_DATA_ENGINE_ENABLED: 'longhorn-v2-data-engine-enabled', LONGHORN_V2_DATA_ENGINE_ENABLED: 'longhorn-v2-data-engine-enabled',
ADDITIONAL_GUEST_MEMORY_OVERHEAD_RATIO: 'additional-guest-memory-overhead-ratio', LONGHORN_V2_DATA_ENGINE_HUGEPAGE_ENABLED: 'longhorn-v2-data-engine-hugepage-enabled',
UPGRADE_CONFIG: 'upgrade-config', LONGHORN_V2_DATA_ENGINE_MEMORY_SIZE: 'longhorn-v2-data-engine-memory-size',
VM_MIGRATION_NETWORK: 'vm-migration-network', ADDITIONAL_GUEST_MEMORY_OVERHEAD_RATIO: 'additional-guest-memory-overhead-ratio',
RANCHER_CLUSTER: 'rancher-cluster', UPGRADE_CONFIG: 'upgrade-config',
MAX_HOTPLUG_RATIO: 'max-hotplug-ratio', VM_MIGRATION_NETWORK: 'vm-migration-network',
KUBEVIRT_MIGRATION: 'kubevirt-migration', RANCHER_CLUSTER: 'rancher-cluster',
INSTANCE_MANAGER_RESOURCES: 'instance-manager-resources', MAX_HOTPLUG_RATIO: 'max-hotplug-ratio',
CLUSTER_POD_SECURITY_STANDARD: 'cluster-pod-security-standard' KUBEVIRT_MIGRATION: 'kubevirt-migration',
INSTANCE_MANAGER_RESOURCES: 'instance-manager-resources',
CLUSTER_POD_SECURITY_STANDARD: 'cluster-pod-security-standard'
}; };
export const HCI_ALLOWED_SETTINGS = { export const HCI_ALLOWED_SETTINGS = {
@ -112,6 +114,14 @@ export const HCI_ALLOWED_SETTINGS = {
experimental: true, experimental: true,
featureFlag: 'longhornV2LVMSupport' featureFlag: 'longhornV2LVMSupport'
}, },
[HCI_SETTING.LONGHORN_V2_DATA_ENGINE_HUGEPAGE_ENABLED]: {
kind: 'boolean',
featureFlag: 'longhornV2HugepageSettings'
},
[HCI_SETTING.LONGHORN_V2_DATA_ENGINE_MEMORY_SIZE]: {
kind: 'number',
featureFlag: 'longhornV2HugepageSettings'
},
[HCI_SETTING.ADDITIONAL_GUEST_MEMORY_OVERHEAD_RATIO]: { kind: 'string', from: 'import' }, [HCI_SETTING.ADDITIONAL_GUEST_MEMORY_OVERHEAD_RATIO]: { kind: 'string', from: 'import' },
[HCI_SETTING.UPGRADE_CONFIG]: { [HCI_SETTING.UPGRADE_CONFIG]: {
kind: 'json', kind: 'json',

2
pkg/harvester/l10n/en-us.yaml
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@ -2092,6 +2092,8 @@ advancedSettings:
'harv-auto-rotate-rke2-certs': The certificate rotation mechanism relies on Rancher. Harvester will automatically update certificates generation to trigger rotation. 'harv-auto-rotate-rke2-certs': The certificate rotation mechanism relies on Rancher. Harvester will automatically update certificates generation to trigger rotation.
'harv-kubeconfig-default-token-ttl-minutes': 'TTL (in minutes) applied on Harvester administration kubeconfig files. Default is 0, which means to never expire.' 'harv-kubeconfig-default-token-ttl-minutes': 'TTL (in minutes) applied on Harvester administration kubeconfig files. Default is 0, which means to never expire.'
'harv-longhorn-v2-data-engine-enabled': 'Enable the Longhorn V2 data engine. Default is false. <ul><li>Changing this setting will restart RKE2 on all nodes. This will not affect running VM workloads.</li><li>If you see "not enough hugepages-2Mi capacity" errors when enabling this setting, wait a minute for the error to clear. If the error remains, reboot the affected node.</li></ul>' 'harv-longhorn-v2-data-engine-enabled': 'Enable the Longhorn V2 data engine. Default is false. <ul><li>Changing this setting will restart RKE2 on all nodes. This will not affect running VM workloads.</li><li>If you see "not enough hugepages-2Mi capacity" errors when enabling this setting, wait a minute for the error to clear. If the error remains, reboot the affected node.</li></ul>'
'harv-longhorn-v2-data-engine-hugepage-enabled': 'Enable hugepages when using the Longhorn V2 data engine. Default is true. Disabling hugepages reduces memory pressure on low-spec nodes and increases deployment flexibility. However, performance may be lower compared to running with hugepages.'
'harv-longhorn-v2-data-engine-memory-size': 'Configure the amount of memory allocated to the SPDK target daemon when using the Longhorn V2 data engine. Default is 2048 MiB.'
'harv-additional-guest-memory-overhead-ratio': 'The ratio for kubevirt to adjust the VM overhead memory. The value could be zero, empty value or floating number between 1.0 and 10.0, default to 1.5.' 'harv-additional-guest-memory-overhead-ratio': 'The ratio for kubevirt to adjust the VM overhead memory. The value could be zero, empty value or floating number between 1.0 and 10.0, default to 1.5.'
'harv-upgrade-config': 'Configure image preloading and VM restore options for upgrades. See related fields in <a href="{url}" target="_blank" rel="noopener">settings/upgrade-config</a>' 'harv-upgrade-config': 'Configure image preloading and VM restore options for upgrades. See related fields in <a href="{url}" target="_blank" rel="noopener">settings/upgrade-config</a>'
'harv-vm-migration-network': 'Segregated network for VM migration traffic.' 'harv-vm-migration-network': 'Segregated network for VM migration traffic.'