3526 Commits

Author SHA1 Message Date
Abhishek Kumar
dc589a442d server: create network offering for specified domain(s) and zone(s)
Signed-off-by: Abhishek Kumar <abhishek.kumar@shapeblue.com>
2019-05-24 10:11:00 +05:30
Abhishek Kumar
2102888116 server: changes for domain, zone specified service offerings
Added changes for creating service offerings for specified domain(s) and zone(s).
Fixed checkAccess for disk offerings.
Fixed list APIs for disk and service offerings.
UI changes for creating disk, service offerings for specified domain(s) and zone(s).

Signed-off-by: Abhishek Kumar <abhishek.kumar@shapeblue.com>
2019-05-24 10:09:52 +05:30
Rohit Yadav
6a902460af find in set implementation
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2019-05-24 09:56:23 +05:30
Abhishek Kumar
c85b3e597a server: ability to create disk offerings for domain(s) and zone(s)
Allows creating storage offerings associated with particular domain(s) and zone(s). In create disk/storage offfering form UI, a mult-select control has been addded to select desired zone(s) and domain select element has been made multi-select.
createDiskOffering API has been modified to allow passing list of domain and zone IDs with keys domainids and zoneids respectively. These lists are stored in DB in cloud.disk_offering_details table with 'domainids' and 'zoneids' key as string of comma separated list of IDs. Response for create, update and list disk offering APIs will return domainids, domainnames, zoneids and zonenames in details object of offering.
listDiskOfferings API has been modified to allow passing zoneid to return only offerings which are associated with the zone.

Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>
2019-05-24 09:56:23 +05:30
Rohit Yadav
2aa4842a94 Merge remote-tracking branch 'origin/4.12' 2019-05-23 18:17:42 +05:30
Rohit Yadav
d77e69a2f2 Merge remote-tracking branch 'origin/4.11' into 4.12
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2019-05-23 18:16:45 +05:30
Rohit Yadav
0929866956
server: ssh-keygen in PEM format and reduce main systemvm patching script (#3333)
On first startup, the management server creates and saves a random
ssh keypair using ssh-keygen in the database. The command does
not specify keys in PEM format which is not the default as generated
by latest ssh-keygen tool.

The systemvmtemplate always needs re-building whenever there is a change
in the cloud-early-config file. This also tries to fix that by introducing a
stage 2 bootstrap.sh where the changes specific to hypervisor detection
etc are refactored/moved. The initial cloud-early-config only patches
before the other scripts are called.

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2019-05-23 18:08:00 +05:30
Rohit Yadav
4f356392ab vmware: don't use redundant worker VM to extract volume (#3218)
This fixes the issue that VM with VMsnapshots fails to start after
extract volume is done on a stopped VM, on VMware.

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2019-05-23 13:18:29 +02:00
Rohit Yadav
0700d91a68 Merge branch '4.12'
- Fixes PR #3146 db cleanup to the correct 4.12->4.13 upgrade path
- Fixes failing unit test due to jdk specific changes after forward
  merging

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2019-05-14 15:15:17 +05:30
Frank Maximus
e11f7ee1ba RIP Nuage Cloudstack Plugin (#3146)
may it rest in peaces
2019-05-14 10:58:24 +02:00
Rohit Yadav
00ff536f81 Merge remote-tracking branch 'origin/4.11' into 4.12
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2019-05-14 14:26:11 +05:30
skattoju4
4c60a5b1ff Fix slow vm creation when large sf snapshot count (#3282)
* skip geting used bytes for volumes that are not in Ready state
* updated log message
* filter snapshots by state backedup
* removed * import
* filter templates by state 'DOWNLOADED'
* refactored getUsedBytes to use O(1) queries
* querying for ready volumes instead filtering in memory
* make listByStoreIdInReadyState more generic ex listByStoreIdAndState
* updated snapshot search criteria for listByStoreIdAndState
* updated template search criteria for listByPoolIdAndState
* fixed typo in search criteria for listByTemplateAndState
* fixed typo in search criteria for templates in listByPoolIdAndState
2019-05-11 16:02:52 +02:00
Rohit Yadav
9ff819da2c
systemvm: new qemu-guest-agent based patching for KVM (#3278)
This introduces a new patching script for patching systemvms on KVM
using qemu-guest-agent that runs inside the systemvm on startup. This
also removes the vport device which was previously used by the legacy
patching script and instead uses the modern and new uniform guest
agent vport for host-guest communication.

Also updates the sytemvmtemplate build config to use the latest Debian
9.9.0 iso.

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2019-05-10 23:42:19 +05:30
ustcweizhou
3729511c37 kvm: Fix three issues with Ubuntu 16.04 hosts (#3227)
* ubuntu16: fix unable to add host if cloudbrX is not configured

while add a ubuntu16.04 host with native eth0 (cloudbrX is not configured),
the operation failed and I got the following error in /var/log/cloudstack/agent/setup.log

```
DEBUG:root:execute:ifconfig eth0
DEBUG:root:[Errno 2] No such file or directory
  File "/usr/lib/python2.7/dist-packages/cloudutils/serviceConfig.py", line 38, in configration
    result = self.config()
  File "/usr/lib/python2.7/dist-packages/cloudutils/serviceConfig.py", line 211, in config
    super(networkConfigUbuntu, self).cfgNetwork()
  File "/usr/lib/python2.7/dist-packages/cloudutils/serviceConfig.py", line 108, in cfgNetwork
    device = self.netcfg.getDefaultNetwork()
  File "/usr/lib/python2.7/dist-packages/cloudutils/networkConfig.py", line 53, in getDefaultNetwork
    pdi = networkConfig.getDevInfo(dev)
  File "/usr/lib/python2.7/dist-packages/cloudutils/networkConfig.py", line 157, in getDevInfo
    elif networkConfig.isBridge(dev) or networkConfig.isOvsBridge(dev):
```

The issue is caused by commit 9c7cd8c2485412bc847b2c2473b962fa01435b24
2017-09-19 16:45 Sigert Goeminne ● CLOUDSTACK-10081: CloudUtils getDevInfo function will now return "bridge" instead o

* ubuntu16: Stop service libvirt-bin.socket while add a host

service libvirt-bin.socket will be started when add a ubuntu 16.04 host
DEBUG:root:execute:sudo /usr/sbin/service libvirt-bin start

However, libvirt-bin service will be broken by it after restarting
Stopping service libvirt-bin.socket will fix the issue.

An example is given as below.

```
root@node32:~# /etc/init.d/libvirt-bin restart
[ ok ] Restarting libvirt-bin (via systemctl): libvirt-bin.service.
root@node32:~# virsh list
error: failed to connect to the hypervisor
error: no valid connection
error: Failed to connect socket to '/var/run/libvirt/libvirt-sock': No such file or directory

root@node32:~# systemctl stop libvirt-bin.socket

root@node32:~# /etc/init.d/libvirt-bin restart
[ ok ] Restarting libvirt-bin (via systemctl): libvirt-bin.service.
root@node32:~# virsh list
 Id    Name                           State
----------------------------------------------------

```

* ubuntu16: Diable libvirt default network

By default, libvirt will create default network virbr0 on kvm hypervisors.
If vm uses the same ip range 192.168.122.0/24, there will be some issues.

In some cases, if we run tcpdump inside vm, we will see the ip of kvm hypervisor as source ip.
2019-05-05 13:57:58 +05:30
Gabriel Beims Bräscher
8f7b27bbdc Mock Scanner, instead of scan the computer running the test. (#3173)
* Mock Scanner, instead of scan the computer running the test.

This allows non linux machines to run the tests without scanning for a
non existing /proc/meminfo.

* test fixes on 'other' platforms libvirt wrapper unit tests (#3)
2019-04-24 13:33:06 +02:00
dahn
f88de7b863 kvm: NotImplemented, with message to signify what is not implemented, using commons-lang version (#3170)
NotImplementedException from sun.reflect.generics.reflectiveObjects is not standard/guarateed by the jvm so a custom implementation is in order.
2019-03-25 13:58:08 +05:30
GabrielBrascher
8d3feb100a Updating pom.xml version numbers for release 4.13.0.0-SNAPSHOT
Signed-off-by: GabrielBrascher <gabriel@pcextreme.nl>
2019-03-20 18:47:35 -03:00
GabrielBrascher
a137398bf1 Updating pom.xml version numbers for release 4.12.0.0
Signed-off-by: GabrielBrascher <gabriel@pcextreme.nl>
2019-03-14 10:11:46 -03:00
Gabriel Beims Bräscher
34030be393
Fix XenServer Security Groups 'vmops' script (#3197)
* Fix XenServer Security Groups 'vmops' script

- fix tokens = line.split(':') to tokens = line.split(';')
- fix expected tokens size from 5 to 4
- enhance logs
- remove unused vmops script. The XCP patch points to the vmops script
on the parent folder [1]. Thus, all XenServer versions are considering
the vmops script located at [2].
- fix UI ipv4/ipv6 cidr validator to allow a list of cidirs.

Fixing issue: #3192 Security Group rules not applied at all for
XenServer 6.5 / Advanced Zone
https://github.com/apache/cloudstack/issues/3192

* Update security group rules after VM migration

Add security group rules on target host
Cause: vmops script expected secondary IPs as "0;" but received "0:"

Remove security group network rules on source host.
Cause: destroy_network_rules_for_vm function on vmops script was not
called when migrating VM

* Add unit tests and address reviewers
2019-03-06 09:13:40 -03:00
Gabriel Beims Bräscher
709845f4a3
Keep iotune section in the VM's XML after live migration (#3171)
* Keep iotune section in the VM's XML after live migration

When live migrating a KVM VM among local storages, the VM loses the
<iotune> section on its XML, therefore, having no IO limitations.

This commit removes the piece of code that deletes the <iotune> section
in the XML.

* Add test for replaceStorage in LibvirtMigrateCommandWrapper

Signed-off-by: Wido den Hollander <wido@widodh.nl>

* Fix Javadoc for method replaceIpForVNCInDescFile
2019-02-12 22:07:03 -02:00
Gabriel Beims Bräscher
7c5eca9481
Copy template to target KVM host if needed when migrating local <> local storage (#3154)
* Migrate template to target host if needed.

Fix KVM VM local storage live migration by migrating its template to the
target host if needed.

* Address reviewer and add method that updates the DB template reference

* Remove deprecated Config.PrimaryStorageDownloadWait

* Code formating of @Inject to follow checkstyle
2019-02-05 00:18:29 -02:00
Nathan Johnson
637cc6ec4e feature: add libvirt / qemu io bursting (#3133)
* feature: add libvirt / qemu io bursting

Adds the ability to set bursting features from libvirt / qemu

This allows you to utilize the iops and bytes temporary "burst" mode
introduced with libvirt 2.4 and improved upon with libvirt 2.6.

https://blogs.igalia.com/berto/2016/05/24/io-bursts-with-qemu-2-6/

* updates per rafael et al
2019-02-04 19:47:44 -02:00
dahn
58466c8954 api: add command to list management servers (#3150)
* api: add command to list management servers

* api: add number of mangement servers in listInfrastructure command

* ui: add block for mangement servers on infra page

* api name resolution method cleanup
2019-02-01 16:23:39 -02:00
dahn
b363fd49f7 Vmware offline migration (#2848)
* - Offline VM and Volume migration on Vmware hypervisor hosts
- Also add VM disk consolidation call on successful VM migrations

* Fix indentation of marvin test file and reformat against PEP8

* * Fix few comment typos
* Refactor debug messages to use String.format() when debug log level is enabled.

* Send list of commands returned by hypervisor Guru instead of explicitly selecting the first one

* Fix unhandled NPE during VM migration

* Revert back to distinct event descriptions for VM to host or storage pool migration

* Reformat test_primary_storage file against PEP-8 and Remove unused imports

* Revert back the deprecation messages in the custom StringUtils class to favour the use of the ApacheUtils
2019-01-25 10:05:13 -02:00
Malcolm Taylor
97ddd8dffd Fix some LGTM alerts (#3143)
* Fix some LGTM alerts

* address review comments from Gabriel Brascher and Rafael Weingartner
2019-01-24 20:22:39 -02:00
Wido den Hollander
c496c84c6c kvm: Properly report available memory to Management Server (#2795)
The KVM Agent had two mechanisms for reporting its capabilities
and memory to the Management Server.

On startup it would ask libvirt the amount of Memory the Host has
and subtract and add the reserved and overcommit memory.

When the HostStats were however reported to the Management Server
these two configured values on the Agent were no longer reported
in the statistics thus showing all the available memory in the
Agent/Host to the Management Server.

This commit unifies this by using the same logic on Agent Startup
and during statistics reporting.

  memory=3069636608, reservedMemory=1073741824

This was reported by a 4GB Hypervisor with this setting:

  host.reserved.mem.mb=1024

The GUI (thus API) would then show:

  Memory Total	2.86 GB

This way the Agent properly 'lies' to the Management Server about its
capabilities in terms of Memory.

This is very helpful if you want to overprovision or undercommit machines
for various reasons.

Overcommitting can be done when KSM or ZSwap or a fast SWAP device is
installed in the machine.

Underprovisioning is done when the Host might run other tasks then a KVM
hypervisor, for example when it runs in a hyperconverged setup with Ceph.

In addition internally many values have been changed from a Double to a Long
and also store the amount of bytes instead of Kilobytes.

Signed-off-by: Wido den Hollander <wido@widodh.nl>
2019-01-24 20:18:04 -02:00
Wido den Hollander
ac73e7e671 kvm: Security Group enhancements and refactor old code (#3113)
* security group: Replace deprecated optparse by argparse

Starting with Python 2.7 the library optparse has been replaced by
argpase.

This commit replaces the use of optparse by argparse

Signed-off-by: Wido den Hollander <wido@widodh.nl>

* security group: Remove LXC support from security_group.py

LXC does not work and has been partially removed from CloudStack already

Signed-off-by: Wido den Hollander <wido@widodh.nl>

* security group: Refactor libvirt code

Use a single function which properly throws an Exception when the
connection to libvirt fails.

Also simplify some logic, make it PEP-8 compatible and remove a unused
function from the code.

Signed-off-by: Wido den Hollander <wido@widodh.nl>

* security group: Raise Exception on execute() failure

If the executed command exists with a non-zero exit status we should
still return the output to the command, but also raise an Exception.

Signed-off-by: Wido den Hollander <wido@widodh.nl>

* security group: Use a function to determin the physical device of a bridge

We can not safely assume that the first device listed under a bridge is the
physical device.

With VXLAN isolation a vnet device can be attached to a bridge prior to the
vxlanXXXX device being attached.

We need to filter out those devices and then fetch the physical device attached
to the bridge.

In addition use the 'bridge' command instead of 'brctl'. 'bridge' is part of the
iproute2 utils just like 'ip' and should be considered as the new default.

This command is also available on EL6 and does not break any backwards compat.

Signed-off-by: Wido den Hollander <wido@widodh.nl>

* security group: --set is deprecated, use --match-set

These messages are seen in the KVM Agent log:

  --set option deprecated, please use --match-set

Functionality does not change

Signed-off-by: Wido den Hollander <wido@widodh.nl>

* security group: PEP-8 and indentation fixes

There were a lot of styling problems in the code:

- Missing whitespace or exess whitespace
- CaMelCaSe function names and variables
- 2-space indentation instead of 4 spaces

This commit addresses those issues.

Signed-off-by: Wido den Hollander <wido@widodh.nl>
2019-01-16 13:35:18 -02:00
Rohit Yadav
50cc0572db Merge remote-tracking branch 'origin/4.11' 2019-01-11 01:14:10 +05:30
Wido den Hollander
c565db2cf2 kvm: Set amount of queues for Virtio SCSI driver to vCPU of Instance (#3101)
The additional queues can enhance the performance of the VirtIO SCSI disk
and it is recommended to set this to the amount of vCPUs a Instance is assigned.

  The optional queues attribute specifies the number of queues for the
  controller. For best performance, it's recommended to specify a value matching
  the number of vCPUs. Since 1.0.5 (QEMU and KVM only)

Source: https://libvirt.org/formatdomain.html#elementsVirtio

Signed-off-by: Wido den Hollander <wido@widodh.nl>
2019-01-08 10:39:21 +01:00
Dingane Hlaluku
e56c499fb8 vmware: syncVolumeToRootFolder method to avoid an infite recursive loop (#3105)
The static method syncVolumeToRootFolder() from VmwareStorageLayoutHelper.java:146 has been incorrectly called and leads to an infinite recursive call that ends up in a StackOverflowError. This PR fixes this.
public static void syncVolumeToRootFolder(DatacenterMO dcMo, DatastoreMO ds, String vmdkName, String vmName) throws Exception { syncVolumeToRootFolder(dcMo, ds, vmdkName, null); } -> public static void syncVolumeToRootFolder(DatacenterMO dcMo, DatastoreMO ds, String vmdkName, String vmName) throws Exception { syncVolumeToRootFolder(dcMo, ds, vmdkName, vmName, null); }
2019-01-07 13:59:45 +05:30
Rohit Yadav
3424d9e6ff Merge remote-tracking branch 'origin/4.11'
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2018-12-28 15:11:15 +05:30
Gabriel Beims Bräscher
bf209405e7 Allow KVM VM live migration with ROOT volume on file storage type (#2997)
* Allow KVM VM live migration with ROOT volume on file

* Allow KVM VM live migration with ROOT volume on file
- Add JUnit tests

* Address reviewers and change some variable names to ease future
implementation (developers can easily guess the name and use
autocomplete)
2018-12-14 09:01:28 -02:00
Craig Squire
8d53557ba7 api: don't throttle api discovery for listApis command (#2894)
Users reported that they weren't getting all apis listed in cloudmonkey when running a sync. After some debugging, I found that the problem is that the ApiDiscoveryService is calling ApiRateLimitServiceImpl.checkAccess(), so the results of the listApis command are being truncated because Cloudstack believes the user has exceeded their API throttling rate.

I enabled throttling with a 25 request per second limit. I then created a test role with only list* permissions and assigned it to a test user. When this user calls listApis, they will typically receive anywhere from 15-18 results. Checking the logs, you see The given user has reached his/her account api limit, please retry after 218 ms..

I raised the limit to 200 requests per second, restarted the management server and tried again. This time I got 143 results and no log messages about the user being throttled.
2018-12-12 23:55:32 +05:30
Bitworks LLC
9dce8a5dea kvm: Added two more device name patterns to valid bridge slaves (lo* and dummy*) (#3000)
Added dummy and lo devices to be treated as a normal bridge slave devs.
Fixes #2998  
Added two more device names (lo* and dummy*). Implemented tests. Code was refactored.
Improved paths concatenation code from "+" to Paths.get.
2018-12-07 01:59:00 +05:30
Wido den Hollander
d96bc05d10 kvm: Use 'ip route show default 0.0.0.0/0' to find the default gateway (#3080)
If a host has many routes this can be a magnitude faster then printing
all the routes and grepping for the default.

In some situations the host might have a large amount of routes due to
dynamic routing being used like OSPF or BGP.

In addition fix a couple of loglines which were throwing messages on
DEBUG while WARN and ERROR should be used there.

Signed-off-by: Wido den Hollander <wido@widodh.nl>
2018-12-06 14:04:47 +05:30
Rohit Yadav
52f68a273a Merge remote-tracking branch 'origin/4.11'
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2018-12-04 16:39:21 +05:30
Craig Squire
290df5f423 api: Discover tags field on superclass of API responses (#3005)
Updated ApiServiceDiscoveryImpl to check superclasses of API responses for fields.

Fixes: #3002
2018-12-04 13:59:48 +05:30
Rohit Yadav
ac9562a4a1 Merge remote-tracking branch 'origin/4.11'
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2018-11-29 15:06:06 +05:30
Rohit Yadav
29b8a9da48
kvm: when untagged vxlan is used, use the default guest/public bridge (#3037)
When vxlan://untagged is used for public (or guest) network, use the
default public/guest bridge device same as how vlan://untagged works.

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2018-11-28 22:22:30 +05:30
Paul Angus
fb80e51307 Updating pom.xml version numbers for release 4.11.3.0-SNAPSHOT
Signed-off-by: Paul Angus <paul.angus@shapeblue.com>
2018-11-20 13:11:52 +00:00
Wido den Hollander
4809fe7cb4 kvm/ceph: When create a new RBD image use modern flags/features for the image (#2985)
These additional RBD features allow for faster lookups of how much space a RBD
image is using, but with the exclusive locking we prevent two VMs from writing
to the same RBD image at the same time.

These are the default features used by Ceph for any new RBD image.

Signed-off-by: Wido den Hollander <wido@widodh.nl>
2018-11-12 10:08:54 -02:00
Rohit Yadav
d4d91f355d
vmware: updateVmwareDc API for updating vmware datacenter details (#2919)
This adds a new API updateVmwareDc that allows admins to update the
VMware datacenter details of a zone. It also recursively updates
the cluster_details for any username/password updates
as well as updates the url detail in cluster_details table and guid
detail in the host_details table with any newly provided vcenter
domain/ip. The update API assumes that there is only one vCenter per
zone. And, since the username/password for each VMware host could be different
than what gets configured for vcenter at zone level, it does not update the
username/password in host_details.

Previously, one has to manually update the db with any new vcenter details for the zone.

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2018-11-12 11:32:36 +05:30
Nicolas Vazquez
4de4eabd18
Enable DPDK support on KVM (#2839)
* Enable DPDK support on KVM

* Allow DPDK deployments on user VMs only

* Fix port name ordering
2018-11-07 09:29:01 -03:00
Rohit Yadav
7479e2877f Merge remote-tracking branch 'origin/4.11' 2018-10-30 15:15:35 +05:30
Rohit Yadav
c6e53f6cc6
kvm: reset KVM host on heartbeat failure (#2984)
On actual testing, I could see that kvmheartbeat.sh script fails on NFS
server failure and stops the agent only. Any HA VMs could be launched
in different hosts, and recovery of NFS server could lead to a state
where a HA enabled VM runs on two hosts and can potentially cause
disk corruptions. In most cases, VM disk corruption will be worse than
VM downtime. I've kept the sleep interval between check/rounds but
reduced it to 10s. The change in behaviour was introduced in #2722.

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2018-10-30 15:13:59 +05:30
Rohit Yadav
323d381767 Merge remote-tracking branch 'origin/4.11'
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2018-10-29 16:27:08 +05:30
Nicolas Vazquez
dffb430975 kvm: Fix migrating VM from ISO failures (#2928)
Prevents errors while migrating VM from ISO:

Test 1: Deploy VM from ISO -> Live migrate VM to another host -> ERROR
Test 2: Register ISO using Direct Download on KVM -> Deploy VM from ISO -> Live migrate VM to another host -> ERROR

- Prevent NullPointerException migrating VM from ISO
- Prevent mount secondary storage on ISO direct downloads on KVM
2018-10-29 16:14:20 +05:30
Rohit Yadav
8738ca75b1
kvm: use libvirtd as service name for all distributions (#2925)
Since we support only Ubuntu 16.04+ on master/4.12+, we can now use
the libvirt service name `libvirtd` for all distributions. This also
fixes an optional package name for libvirtd installation on Debian 9+.
Fixes #2909

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2018-10-29 11:55:28 +05:30
Gabriel Beims Bräscher
bfc326384d saml: redirect saml2 failed login message to a configurable URL (#2185)
When a user fails to authenticate with SAML2, it returns an error page
showing the content of the attached image.

To make it more user-friendly and customizable, one could configure a
desirable URL to redirect when such authentication failure happens.

This ticket proposes a global settings variable
(saml2.failed.login.redirect.url). If null, the SAML2 authentication
flow does not change from the current; however, if the user configures
an URL then ACS redirects to that URL.
2018-10-28 00:55:06 +05:30
Simon Weller
c4b621a418 kvm: HyperV Enlightment for Improved Windows Server 2008+ Performance (#2870)
Windows has support for several paravirt features that it will use when running on Hyper-V, Microsoft's hypervisor. These features are called enlightenments. Many of the features are similar to paravirt functionality that exists with Linux on KVM (virtio, kvmclock, PV EOI, etc.)

Nowadays QEMU/KVM can also enable support for several Hyper-V enlightenments. When enabled, Windows VMs running on KVM will use many of the same paravirt optimizations they would use when running on Hyper-V.

A number of years ago, a PR was introduced that added a good portion of the code to enable this feature set, but it was never completed. This PR enables the existing features. The previous patch set detailed in #1013 also included the tests.

By selecting Windows PV, the enlightenment additions will be applied to the libvirt configuration. This is support on Windows Server 2008 and beyond, so all currently supported versions of Windows Server.

In our testing, we've seen benchmark improvements of around 20-25% running on Centos 7 hosts and it is also supported on Centos/RHEL 6.5 and later. Testing on Ubuntu would be appreciated.
2018-10-25 06:54:13 +05:30