Windows 2016 HVM or PVHVM
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Hello,
Any clarification on this would be appreciated.
I have some Windows 2016 VMs that have 'Windows Update tools' enabled, PV drivers are installed onto the system, however in XO the mode is Hardware virtualization (HVM), however if I install the Citrix Management agent, the mode changes to Hardware virtualization with paravirtualization drivers enabled (PVHVM). I have checked the drivers and they are identical, I'm not quite sure why the modes have changed, has the mode changed or has the reporting in XO changed because of the agent install?
Thanks
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Please paste here the content of
xe vm-param-list uuid=<VM UUID>, so we can see in details in it's just cosmetic different or not
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@olivierlambert said in Windows 2016 HVM or PVHVM:
xe vm-param-list uuid=<VM UUID>
Hardware virtualization (HVM)uuid ( RO) : 094095a8-cb25-ff8f-b5bf-818dc6d87448 name-label ( RW): Windows 2016 (HVM) name-description ( RW): Windows 2016 (HVM) user-version ( RW): 2 is-a-template ( RW): false is-default-template ( RW): false is-a-snapshot ( RO): false snapshot-of ( RO): <not in database> snapshots ( RO): 2fa90525-468f-b023-f2f7-2c6470e8a853; 2ac06157-9c4e-ed70-3619-80e60f3a7019 snapshot-time ( RO): 19700101T00:00:00Z snapshot-info ( RO): parent ( RO): 2ac06157-9c4e-ed70-3619-80e60f3a7019 children ( RO): is-control-domain ( RO): false power-state ( RO): running memory-actual ( RO): 8589934592 memory-target ( RO): 0 memory-overhead ( RO): 73400320 memory-static-max ( RW): 8589934592 memory-dynamic-max ( RW): 8589934592 memory-dynamic-min ( RW): 8589934592 memory-static-min ( RW): 1073741824 suspend-VDI-uuid ( RW): <not in database> suspend-SR-uuid ( RW): <not in database> VCPUs-params (MRW): weight: 256 VCPUs-max ( RW): 4 VCPUs-at-startup ( RW): 4 actions-after-shutdown ( RW): Destroy actions-after-reboot ( RW): Restart actions-after-crash ( RW): Restart console-uuids (SRO): 1ec97d94-47d2-9124-a077-e17f8de52db6 hvm ( RO): true platform (MRW): timeoffset: 3598; videoram: 8; hpet: true; device-model: qemu-upstream-compat; apic: true; device_id: 0002; cores-per-socket: 2; pae: true; vga: std; nx: true; viridian_time_ref_count: true; viridian: true; acpi: 1; viridian_reference_tsc: true allowed-operations (SRO): changing_dynamic_range; migrate_send; pool_migrate; suspend; hard_reboot; hard_shutdown; clean_reboot; clean_shutdown; pause; checkpoint; snapshot current-operations (SRO): blocked-operations (MRW): allowed-VBD-devices (SRO): 2; 4; 5; 6; 7; 8; 9; 10; 11; 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 50; 51; 52; 53; 54; 55; 56; 57; 58; 59; 60; 61; 62; 63; 64; 65; 66; 67; 68; 69; 70; 71; 72; 73; 74; 75; 76; 77; 78; 79; 80; 81; 82; 83; 84; 85; 86; 87; 88; 89; 90; 91; 92; 93; 94; 95; 96; 97; 98; 99; 100; 101; 102; 103; 104; 105; 106; 107; 108; 109; 110; 111; 112; 113; 114; 115; 116; 117; 118; 119; 120; 121; 122; 123; 124; 125; 126; 127; 128; 129; 130; 131; 132; 133; 134; 135; 136; 137; 138; 139; 140; 141; 142; 143; 144; 145; 146; 147; 148; 149; 150; 151; 152; 153; 154; 155; 156; 157; 158; 159; 160; 161; 162; 163; 164; 165; 166; 167; 168; 169; 170; 171; 172; 173; 174; 175; 176; 177; 178; 179; 180; 181; 182; 183; 184; 185; 186; 187; 188; 189; 190; 191; 192; 193; 194; 195; 196; 197; 198; 199; 200; 201; 202; 203; 204; 205; 206; 207; 208; 209; 210; 211; 212; 213; 214; 215; 216; 217; 218; 219; 220; 221; 222; 223; 224; 225; 226; 227; 228; 229; 230; 231; 232; 233; 234; 235; 236; 237; 238; 239; 240; 241; 242; 243; 244; 245; 246; 247; 248; 249; 250; 251; 252; 253; 254 allowed-VIF-devices (SRO): 1; 2; 3; 4; 5; 6 possible-hosts ( RO): 8d38c36c-eb67-4823-ba4b-05f60bae9dc9; 65ab2fdc-cc96-4e93-ac00-71dd409b6101 domain-type ( RW): hvm current-domain-type ( RO): hvm HVM-boot-policy ( RW): BIOS order HVM-boot-params (MRW): order: c HVM-shadow-multiplier ( RW): 1.000 PV-kernel ( RW): PV-ramdisk ( RW): PV-args ( RW): PV-legacy-args ( RW): PV-bootloader ( RW): PV-bootloader-args ( RW): last-boot-CPU-flags ( RO): vendor: GenuineIntel; features: 17cbfbff-f7fa3223-2d93fbff-00000123-00000001-001c0fbb-00000000-00000000-00001000-9c000400-00000000-00000000-00000000-00000000 last-boot-record ( RO): '' resident-on ( RO): 65ab2fdc-cc96-4e93-ac00-71dd409b6101 affinity ( RW): <not in database> other-config (MRW): import_task: OpaqueRef:5ecfcf41-8da9-4d52-bbe2-e58785ba50ae; xo:resource_set: "ztUeP5XFTVk"; instant: true; base_template_name: Windows Server 2016 (64-bit); mac_seed: 1321ad65-a344-f3e3-7d8a-c35df8d37694; install-methods: cdrom dom-id ( RO): 5 recommendations ( RO): <restrictions><restriction field="memory-static-max" max="1649267441664"/><restriction field="vcpus-max" max="32"/><restriction field="has-vendor-device" value="true"/><restriction field="allow-network-sriov" value="1"/><restriction max="255" property="number-of-vbds"/><restriction max="7" property="number-of-vifs"/></restrictions> xenstore-data (MRW): vm-data: ; vm-data/mmio-hole-size: 268435456 ha-always-run ( RW) [DEPRECATED]: false ha-restart-priority ( RW): blobs ( RO): start-time ( RO): 20200727T00:08:39Z install-time ( RO): 19700101T00:00:00Z VCPUs-number ( RO): 4 VCPUs-utilisation (MRO): 0: 0.022; 1: 0.016; 2: 0.019; 3: 0.021 os-version (MRO): PV-drivers-version (MRO): PV-drivers-up-to-date ( RO) [DEPRECATED]: true memory (MRO): disks (MRO): VBDs (SRO): dd170d9e-0e4f-702f-9557-bfec48035265; deeaf63b-e024-a157-51a9-892e4fbb2dcb; 933d8efb-4446-fac0-69fd-bd6063a83d9c networks (MRO): 0/ip: 192.168.52.115; 0/ipv4/0: 192.168.52.115; 0/ipv6/0: fe80:0000:0000:0000:cc6c:b18a:e77c:5847 PV-drivers-detected ( RO): true other (MRO): platform-feature-multiprocessor-suspend: 1; has-vendor-device: 1; feature-suspend: 1; feature-balloon: 1; feature-poweroff: 1; feature-reboot: 1; feature-s3: 1; feature-s4: 1; feature-shutdown: 1 live ( RO): true guest-metrics-last-updated ( RO): 20200727T00:11:46Z can-use-hotplug-vbd ( RO): true can-use-hotplug-vif ( RO): true cooperative ( RO) [DEPRECATED]: true tags (SRW): appliance ( RW): <not in database> snapshot-schedule ( RW): aa628084-49b0-c9e5-5230-2bef501300c6 is-vmss-snapshot ( RO): false start-delay ( RW): 0 shutdown-delay ( RW): 0 order ( RW): 0 version ( RO): 2 generation-id ( RO): 2695189925407817237:1100109927073744675 hardware-platform-version ( RO): 2 has-vendor-device ( RW): true requires-reboot ( RO): false reference-label ( RO): windows-server-2016-64bit bios-strings (MRO): bios-vendor: Xen; bios-version: ; system-manufacturer: Xen; system-product-name: HVM domU; system-version: ; system-serial-number: ; enclosure-asset-tag: ; hp-rombios: ; oem-1: Xen; oem-2: MS_VM_CERT/SHA1/bdbeb6e0a816d43fa6d3fe8aaef04c2bad9d3e3dHardware virtualization with paravirtualization drivers enabled (PVHVM)
uuid ( RO) : b783132d-b76b-ab4d-4a39-a3f23e2cb07c name-label ( RW): Windows 2016 (PVHVM) name-description ( RW): Windows 2016 (PVHVM) user-version ( RW): 2 is-a-template ( RW): false is-default-template ( RW): false is-a-snapshot ( RO): false snapshot-of ( RO): <not in database> snapshots ( RO): 10503218-40dd-5095-c1ec-b434ccfca7f9; ee3328d3-ec85-0efc-f65a-e580b4628681 snapshot-time ( RO): 19700101T00:00:00Z snapshot-info ( RO): parent ( RO): ee3328d3-ec85-0efc-f65a-e580b4628681 children ( RO): is-control-domain ( RO): false power-state ( RO): running memory-actual ( RO): 8589934592 memory-target ( RO): 0 memory-overhead ( RO): 73400320 memory-static-max ( RW): 8589934592 memory-dynamic-max ( RW): 8589934592 memory-dynamic-min ( RW): 8589934592 memory-static-min ( RW): 1073741824 suspend-VDI-uuid ( RW): <not in database> suspend-SR-uuid ( RW): <not in database> VCPUs-params (MRW): weight: 256 VCPUs-max ( RW): 4 VCPUs-at-startup ( RW): 4 actions-after-shutdown ( RW): Destroy actions-after-reboot ( RW): Restart actions-after-crash ( RW): Restart console-uuids (SRO): 876eb207-46d5-791a-3ed1-28b0bac3fd50 hvm ( RO): true platform (MRW): timeoffset: 3600; videoram: 8; hpet: true; device-model: qemu-upstream-compat; apic: true; device_id: 0002; cores-per-socket: 2; pae: true; vga: std; nx: true; viridian_time_ref_count: true; viridian: true; acpi: 1; viridian_reference_tsc: true allowed-operations (SRO): changing_dynamic_range; migrate_send; pool_migrate; changing_VCPUs_live; suspend; hard_reboot; hard_shutdown; clean_reboot; clean_shutdown; pause; checkpoint; snapshot current-operations (SRO): blocked-operations (MRW): allowed-VBD-devices (SRO): 1; 2; 3; 4; 5; 6; 7; 8; 9; 10; 11; 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 50; 51; 52; 53; 54; 55; 56; 57; 58; 59; 60; 61; 62; 63; 64; 65; 66; 67; 68; 69; 70; 71; 72; 73; 74; 75; 76; 77; 78; 79; 80; 81; 82; 83; 84; 85; 86; 87; 88; 89; 90; 91; 92; 93; 94; 95; 96; 97; 98; 99; 100; 101; 102; 103; 104; 105; 106; 107; 108; 109; 110; 111; 112; 113; 114; 115; 116; 117; 118; 119; 120; 121; 122; 123; 124; 125; 126; 127; 128; 129; 130; 131; 132; 133; 134; 135; 136; 137; 138; 139; 140; 141; 142; 143; 144; 145; 146; 147; 148; 149; 150; 151; 152; 153; 154; 155; 156; 157; 158; 159; 160; 161; 162; 163; 164; 165; 166; 167; 168; 169; 170; 171; 172; 173; 174; 175; 176; 177; 178; 179; 180; 181; 182; 183; 184; 185; 186; 187; 188; 189; 190; 191; 192; 193; 194; 195; 196; 197; 198; 199; 200; 201; 202; 203; 204; 205; 206; 207; 208; 209; 210; 211; 212; 213; 214; 215; 216; 217; 218; 219; 220; 221; 222; 223; 224; 225; 226; 227; 228; 229; 230; 231; 232; 233; 234; 235; 236; 237; 238; 239; 240; 241; 242; 243; 244; 245; 246; 247; 248; 249; 250; 251; 252; 253; 254 allowed-VIF-devices (SRO): 0; 2; 3; 4; 5; 6 possible-hosts ( RO): 8d38c36c-eb67-4823-ba4b-05f60bae9dc9; 65ab2fdc-cc96-4e93-ac00-71dd409b6101 domain-type ( RW): hvm current-domain-type ( RO): hvm HVM-boot-policy ( RW): BIOS order HVM-boot-params (MRW): order: c HVM-shadow-multiplier ( RW): 1.000 PV-kernel ( RW): PV-ramdisk ( RW): PV-args ( RW): PV-legacy-args ( RW): PV-bootloader ( RW): PV-bootloader-args ( RW): last-boot-CPU-flags ( RO): vendor: GenuineIntel; features: 1fcbfbff-f7fa3223-2d93fbff-00000523-0000000f-019c4fbb-00000008-00000000-00001000-9c000400-00000000-00000000-00000000-00000000 last-boot-record ( RO): '' resident-on ( RO): 65ab2fdc-cc96-4e93-ac00-71dd409b6101 affinity ( RW): <not in database> other-config (MRW): import_task: OpaqueRef:19995e32-87b6-41da-bd55-c3483038c373; base_template_name: Windows Server 2016 (64-bit); mac_seed: 0c225579-5b4a-0983-36dc-c331d27caf31; install-methods: cdrom; auto_poweron: false dom-id ( RO): 36 recommendations ( RO): <restrictions><restriction field="memory-static-max" max="1649267441664"/><restriction field="vcpus-max" max="32"/><restriction field="has-vendor-device" value="true"/><restriction field="allow-network-sriov" value="1"/><restriction max="255" property="number-of-vbds"/><restriction max="7" property="number-of-vifs"/></restrictions> xenstore-data (MRW): vm-data: ; vm-data/mmio-hole-size: 268435456 ha-always-run ( RW) [DEPRECATED]: false ha-restart-priority ( RW): blobs ( RO): start-time ( RO): 20200814T08:38:09Z install-time ( RO): 19700101T00:00:00Z VCPUs-number ( RO): 4 VCPUs-utilisation (MRO): 0: 0.038; 1: 0.026; 2: 0.022; 3: 0.036 os-version (MRO): name: Microsoft Windows Server 2016 Standard|C:\Windows|\Device\Harddisk0\Partition2; distro: windows; major: 6; minor: 2; spmajor: 0; spminor: 0 PV-drivers-version (MRO): major: 7; minor: 2; micro: 0; build: 1555 PV-drivers-up-to-date ( RO) [DEPRECATED]: true memory (MRO): disks (MRO): VBDs (SRO): dfee0252-6edb-a58c-e30f-48ec6d52fcc7 networks (MRO): 1/ip: 192.168.52.10; 1/ipv4/0: 192.168.52.10; 1/ipv6/0: fe80:0000:0000:0000:dccd:43c6:c210:1f9d PV-drivers-detected ( RO): true other (MRO): platform-feature-multiprocessor-suspend: 1; has-vendor-device: 1; feature-suspend: 1; feature-balloon: 1; feature-poweroff: 1; feature-reboot: 1; feature-s3: 1; feature-s4: 1; error: WTSQueryUserToken : 1008 failed.; feature-setcomputername: 1; feature-xs-batcmd: 1; feature-ts2: 1; feature-ts: 1; feature-static-ip-setting: 1; feature-wuRebootRequired: 1; data-ts: 1 live ( RO): true guest-metrics-last-updated ( RO): 20200814T08:43:51Z can-use-hotplug-vbd ( RO): true can-use-hotplug-vif ( RO): true cooperative ( RO) [DEPRECATED]: true tags (SRW): appliance ( RW): <not in database> snapshot-schedule ( RW): aa628084-49b0-c9e5-5230-2bef501300c6 is-vmss-snapshot ( RO): false start-delay ( RW): 0 shutdown-delay ( RW): 0 order ( RW): 0 version ( RO): 3 generation-id ( RO): 4915069278103354312:7221504440612414521 hardware-platform-version ( RO): 2 has-vendor-device ( RW): true requires-reboot ( RO): false reference-label ( RO): windows-server-2016-64bit bios-strings (MRO): bios-vendor: Xen; bios-version: ; system-manufacturer: Xen; system-product-name: HVM domU; system-version: ; system-serial-number: ; enclosure-asset-tag: ; hp-rombios: ; oem-1: Xen; oem-2: MS_VM_CERT/SHA1/bdbeb6e0a816d43fa6d3fe8aaef04c2bad9d3e3d -
Okay so after carefully reading the first post:
- Having the PV drivers installed via Windows update means you indeed have PV drivers in place. Which is good
- … But it doesn't mean you have the agent! The agent is here to report Windows version details, RAM usage and other details (like PV driver version). It's a small service running, started on boot, reporting extra info to the hypervisor. This agent isn't installed via Windows Updates.
In theory, in recent versions of XO, we are now able to make the difference between just PV drivers installed versus PV drivers AND the management agent.
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Yes, just really wanting to know why PVHVM is only present in XO after the manual agent install and a confirmation if possible that they're basically the same mode wise just presented differently. There is a discrepancy on the PV driver from that output:
Hardware virtualization (HVM)
PV-drivers-version (MRO): major: 7; minor: 2; micro: 0; build: 1555Hardware virtualization with paravirtualization drivers enabled (PVHVM)
PV-drivers-version (MRO): -
You inverted both
The one marked with PVHVM should have the PV driver version and vice versa.Also, please just check if your XO is up to date, because we improved that reporting.
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Sorry, I have messed that up a bit!
Hardware virtualization (HVM)
# xe vm-param-list uuid=094095a8-cb25-ff8f-b5bf-818dc6d87448 |grep PV PV-kernel ( RW): PV-ramdisk ( RW): PV-args ( RW): PV-legacy-args ( RW): PV-bootloader ( RW): PV-bootloader-args ( RW): PV-drivers-version (MRO): PV-drivers-up-to-date ( RO) [DEPRECATED]: true PV-drivers-detected ( RO): trueHardware virtualization with paravirtualization drivers enabled (PVHVM)
# xe vm-param-list uuid=b783132d-b76b-ab4d-4a39-a3f23e2cb07c |grep PV PV-kernel ( RW): PV-ramdisk ( RW): PV-args ( RW): PV-legacy-args ( RW): PV-bootloader ( RW): PV-bootloader-args ( RW): PV-drivers-version (MRO): major: 7; minor: 2; micro: 0; build: 1555 PV-drivers-up-to-date ( RO) [DEPRECATED]: true PV-drivers-detected ( RO): trueI am running xo-server 5.59.0, but the appliance itself is pretty old, I probably need to rebuild it from a later version.
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So you are indeed using a fairly outdated release.
xo-web 5.67.0was released with XOA Latest channel.With the new version, you'll have a proper display of the mode and if there's the agent installed or not
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Thanks @olivierlambert
I changed the release channel to 'latest' and updated to xo-server 5.64.1
/ xo-web 5.67.0Both now report as being PVHVM with the additional "Management agent 7.2 detected" / "Management agent not detected"
Thanks
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Which is exactly the right behavior! Perfect
Thanks for the feedback.
